Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6

75 files changed, 500 insertions, 182 deletions

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 4951aa82e9f5..acf222f91f5a 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -26,6 +26,7 @@
 #include <asm/ebcdic.h>
 #include <asm/idals.h>
 #include <asm/itcw.h>
+#include <asm/diag.h>
 
 /* This is ugly... */
 #define PRINTK_HEADER "dasd:"
@@ -1898,7 +1899,8 @@ restart:
 		/*  Process requests that may be recovered */
 		if (cqr->status == DASD_CQR_NEED_ERP) {
 			erp_fn = base->discipline->erp_action(cqr);
-			erp_fn(cqr);
+			if (IS_ERR(erp_fn(cqr)))
+				continue;
 			goto restart;
 		}
 
@@ -2212,6 +2214,13 @@ static int dasd_open(struct block_device *bdev, fmode_t mode)
 		goto out;
 	}
 
+	if ((mode & FMODE_WRITE) &&
+	    (test_bit(DASD_FLAG_DEVICE_RO, &base->flags) ||
+	     (base->features & DASD_FEATURE_READONLY))) {
+		rc = -EROFS;
+		goto out;
+	}
+
 	return 0;
 
 out:
@@ -2289,6 +2298,34 @@ dasd_exit(void)
  * SECTION: common functions for ccw_driver use
  */
 
+/*
+ * Is the device read-only?
+ * Note that this function does not report the setting of the
+ * readonly device attribute, but how it is configured in z/VM.
+ */
+int dasd_device_is_ro(struct dasd_device *device)
+{
+	struct ccw_dev_id dev_id;
+	struct diag210 diag_data;
+	int rc;
+
+	if (!MACHINE_IS_VM)
+		return 0;
+	ccw_device_get_id(device->cdev, &dev_id);
+	memset(&diag_data, 0, sizeof(diag_data));
+	diag_data.vrdcdvno = dev_id.devno;
+	diag_data.vrdclen = sizeof(diag_data);
+	rc = diag210(&diag_data);
+	if (rc == 0 || rc == 2) {
+		return diag_data.vrdcvfla & 0x80;
+	} else {
+		DBF_EVENT(DBF_WARNING, "diag210 failed for dev=%04x with rc=%d",
+			  dev_id.devno, rc);
+		return 0;
+	}
+}
+EXPORT_SYMBOL_GPL(dasd_device_is_ro);
+
 static void dasd_generic_auto_online(void *data, async_cookie_t cookie)
 {
 	struct ccw_device *cdev = data;
diff --git a/drivers/s390/block/dasd_3990_erp.c b/drivers/s390/block/dasd_3990_erp.c
index 44796ba4eb9b..6632649dd6aa 100644
--- a/drivers/s390/block/dasd_3990_erp.c
+++ b/drivers/s390/block/dasd_3990_erp.c
@@ -10,7 +10,6 @@
 #define KMSG_COMPONENT "dasd-eckd"
 
 #include <linux/timer.h>
-#include <linux/slab.h>
 #include <asm/idals.h>
 
 #define PRINTK_HEADER "dasd_erp(3990): "
@@ -1045,6 +1044,10 @@ dasd_3990_erp_com_rej(struct dasd_ccw_req * erp, char *sense)
 
 		erp->retries = 5;
 
+	} else if (sense[1] & SNS1_WRITE_INHIBITED) {
+		dev_err(&device->cdev->dev, "An I/O request was rejected"
+			" because writing is inhibited\n");
+		erp = dasd_3990_erp_cleanup(erp, DASD_CQR_FAILED);
 	} else {
 		/* fatal error -  set status to FAILED
 		   internal error 09 - Command Reject */
@@ -2283,7 +2286,8 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
 
 	if (cqr->cpmode == 1) {
 		cplength = 0;
-		datasize = sizeof(struct tcw) + sizeof(struct tsb);
+		/* TCW needs to be 64 byte aligned, so leave enough room */
+		datasize = 64 + sizeof(struct tcw) + sizeof(struct tsb);
 	} else {
 		cplength = 2;
 		datasize = 0;
@@ -2305,15 +2309,15 @@ static struct dasd_ccw_req *dasd_3990_erp_add_erp(struct dasd_ccw_req *cqr)
                                      cqr->retries);
 			dasd_block_set_timer(device->block, (HZ << 3));
                 }
-		return cqr;
+		return erp;
 	}
 
 	ccw = cqr->cpaddr;
 	if (cqr->cpmode == 1) {
 		/* make a shallow copy of the original tcw but set new tsb */
 		erp->cpmode = 1;
-		erp->cpaddr = erp->data;
-		tcw = erp->data;
+		erp->cpaddr = PTR_ALIGN(erp->data, 64);
+		tcw = erp->cpaddr;
 		tsb = (struct tsb *) &tcw[1];
 		*tcw = *((struct tcw *)cqr->cpaddr);
 		tcw->tsb = (long)tsb;
@@ -2368,6 +2372,9 @@ dasd_3990_erp_additional_erp(struct dasd_ccw_req * cqr)
 	/* add erp and initialize with default TIC */
 	erp = dasd_3990_erp_add_erp(cqr);
 
+	if (IS_ERR(erp))
+		return erp;
+
 	/* inspect sense, determine specific ERP if possible */
 	if (erp != cqr) {
 
@@ -2707,6 +2714,8 @@ dasd_3990_erp_action(struct dasd_ccw_req * cqr)
 	if (erp == NULL) {
 		/* no matching erp found - set up erp */
 		erp = dasd_3990_erp_additional_erp(cqr);
+		if (IS_ERR(erp))
+			return erp;
 	} else {
 		/* matching erp found - set all leading erp's to DONE */
 		erp = dasd_3990_erp_handle_match_erp(cqr, erp);
diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index 148b1dd24070..8c4814258e93 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -8,6 +8,7 @@
 #define KMSG_COMPONENT "dasd-eckd"
 
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <asm/ebcdic.h>
 #include "dasd_int.h"
 #include "dasd_eckd.h"
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index d49766f3b940..eff9c812c5c2 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -18,6 +18,7 @@
 #include <linux/ctype.h>
 #include <linux/init.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 
 #include <asm/debug.h>
 #include <asm/uaccess.h>
@@ -742,6 +743,7 @@ dasd_ro_store(struct device *dev, struct device_attribute *attr,
 	      const char *buf, size_t count)
 {
 	struct dasd_devmap *devmap;
+	struct dasd_device *device;
 	int val;
 	char *endp;
 
@@ -758,12 +760,14 @@ dasd_ro_store(struct device *dev, struct device_attribute *attr,
 		devmap->features |= DASD_FEATURE_READONLY;
 	else
 		devmap->features &= ~DASD_FEATURE_READONLY;
-	if (devmap->device)
-		devmap->device->features = devmap->features;
-	if (devmap->device && devmap->device->block
-	    && devmap->device->block->gdp)
-		set_disk_ro(devmap->device->block->gdp, val);
+	device = devmap->device;
+	if (device) {
+		device->features = devmap->features;
+		val = val || test_bit(DASD_FLAG_DEVICE_RO, &device->flags);
+	}
 	spin_unlock(&dasd_devmap_lock);
+	if (device && device->block && device->block->gdp)
+		set_disk_ro(device->block->gdp, val);
 	return count;
 }
 
diff --git a/drivers/s390/block/dasd_diag.c b/drivers/s390/block/dasd_diag.c
index 6e14863f5c70..687f323cdc38 100644
--- a/drivers/s390/block/dasd_diag.c
+++ b/drivers/s390/block/dasd_diag.c
@@ -145,12 +145,10 @@ dasd_diag_erp(struct dasd_device *device)
 	mdsk_term_io(device);
 	rc = mdsk_init_io(device, device->block->bp_block, 0, NULL);
 	if (rc == 4) {
-		if (!(device->features & DASD_FEATURE_READONLY)) {
+		if (!(test_and_set_bit(DASD_FLAG_DEVICE_RO, &device->flags)))
 			pr_warning("%s: The access mode of a DIAG device "
 				   "changed to read-only\n",
 				   dev_name(&device->cdev->dev));
-			device->features |= DASD_FEATURE_READONLY;
-		}
 		rc = 0;
 	}
 	if (rc)
@@ -449,7 +447,7 @@ dasd_diag_check_device(struct dasd_device *device)
 		rc = -EIO;
 	} else {
 		if (rc == 4)
-			device->features |= DASD_FEATURE_READONLY;
+			set_bit(DASD_FLAG_DEVICE_RO, &device->flags);
 		pr_info("%s: New DASD with %ld byte/block, total size %ld "
 			"KB%s\n", dev_name(&device->cdev->dev),
 			(unsigned long) block->bp_block,
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c
index 1cca21aafaba..0cb233116855 100644
--- a/drivers/s390/block/dasd_eckd.c
+++ b/drivers/s390/block/dasd_eckd.c
@@ -1089,6 +1089,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 	struct dasd_eckd_private *private;
 	struct dasd_block *block;
 	int is_known, rc;
+	int readonly;
 
 	if (!ccw_device_is_pathgroup(device->cdev)) {
 		dev_warn(&device->cdev->dev,
@@ -1182,15 +1183,20 @@ dasd_eckd_check_characteristics(struct dasd_device *device)
 	else
 		private->real_cyl = private->rdc_data.no_cyl;
 
+	readonly = dasd_device_is_ro(device);
+	if (readonly)
+		set_bit(DASD_FLAG_DEVICE_RO, &device->flags);
+
 	dev_info(&device->cdev->dev, "New DASD %04X/%02X (CU %04X/%02X) "
-		 "with %d cylinders, %d heads, %d sectors\n",
+		 "with %d cylinders, %d heads, %d sectors%s\n",
 		 private->rdc_data.dev_type,
 		 private->rdc_data.dev_model,
 		 private->rdc_data.cu_type,
 		 private->rdc_data.cu_model.model,
 		 private->real_cyl,
 		 private->rdc_data.trk_per_cyl,
-		 private->rdc_data.sec_per_trk);
+		 private->rdc_data.sec_per_trk,
+		 readonly ? ", read-only device" : "");
 	return 0;
 
 out_err3:
@@ -2839,8 +2845,13 @@ static int dasd_symm_io(struct dasd_device *device, void __user *argp)
 	char *psf_data, *rssd_result;
 	struct dasd_ccw_req *cqr;
 	struct ccw1 *ccw;
+	char psf0, psf1;
 	int rc;
 
+	if (!capable(CAP_SYS_ADMIN) && !capable(CAP_SYS_RAWIO))
+		return -EACCES;
+	psf0 = psf1 = 0;
+
 	/* Copy parms from caller */
 	rc = -EFAULT;
 	if (copy_from_user(&usrparm, argp, sizeof(usrparm)))
@@ -2869,12 +2880,8 @@ static int dasd_symm_io(struct dasd_device *device, void __user *argp)
 			   (void __user *)(unsigned long) usrparm.psf_data,
 			   usrparm.psf_data_len))
 		goto out_free;
-
-	/* sanity check on syscall header */
-	if (psf_data[0] != 0x17 && psf_data[1] != 0xce) {
-		rc = -EINVAL;
-		goto out_free;
-	}
+	psf0 = psf_data[0];
+	psf1 = psf_data[1];
 
 	/* setup CCWs for PSF + RSSD */
 	cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 2 , 0, device);
@@ -2925,7 +2932,9 @@ out_free:
 	kfree(rssd_result);
 	kfree(psf_data);
 out:
-	DBF_DEV_EVENT(DBF_WARNING, device, "Symmetrix ioctl: rc=%d", rc);
+	DBF_DEV_EVENT(DBF_WARNING, device,
+		      "Symmetrix ioctl (0x%02x 0x%02x): rc=%d",
+		      (int) psf0, (int) psf1, rc);
 	return rc;
 }
 
@@ -3146,11 +3155,11 @@ static void dasd_eckd_dump_sense_tcw(struct dasd_device *device,
 
 	tsb = NULL;
 	sense = NULL;
-	if (irb->scsw.tm.tcw)
+	if (irb->scsw.tm.tcw && (irb->scsw.tm.fcxs == 0x01))
 		tsb = tcw_get_tsb(
 			(struct tcw *)(unsigned long)irb->scsw.tm.tcw);
 
-	if (tsb && (irb->scsw.tm.fcxs == 0x01)) {
+	if (tsb) {
 		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
 			       " tsb->length %d\n", tsb->length);
 		len += sprintf(page + len, KERN_ERR PRINTK_HEADER
diff --git a/drivers/s390/block/dasd_eer.c b/drivers/s390/block/dasd_eer.c
index 1f3e967aaba8..dd88803e4899 100644
--- a/drivers/s390/block/dasd_eer.c
+++ b/drivers/s390/block/dasd_eer.c
@@ -19,6 +19,7 @@
 #include <linux/mutex.h>
 #include <linux/smp_lock.h>
 #include <linux/err.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include <asm/atomic.h>
diff --git a/drivers/s390/block/dasd_fba.c b/drivers/s390/block/dasd_fba.c
index 0f152444ac77..37282b90eecc 100644
--- a/drivers/s390/block/dasd_fba.c
+++ b/drivers/s390/block/dasd_fba.c
@@ -124,6 +124,7 @@ dasd_fba_check_characteristics(struct dasd_device *device)
 	struct dasd_fba_private *private;
 	struct ccw_device *cdev = device->cdev;
 	int rc;
+	int readonly;
 
 	private = (struct dasd_fba_private *) device->private;
 	if (!private) {
@@ -162,16 +163,21 @@ dasd_fba_check_characteristics(struct dasd_device *device)
 		return rc;
 	}
 
+	readonly = dasd_device_is_ro(device);
+	if (readonly)
+		set_bit(DASD_FLAG_DEVICE_RO, &device->flags);
+
 	dev_info(&device->cdev->dev,
 		 "New FBA DASD %04X/%02X (CU %04X/%02X) with %d MB "
-		 "and %d B/blk\n",
+		 "and %d B/blk%s\n",
 		 cdev->id.dev_type,
 		 cdev->id.dev_model,
 		 cdev->id.cu_type,
 		 cdev->id.cu_model,
 		 ((private->rdc_data.blk_bdsa *
 		   (private->rdc_data.blk_size >> 9)) >> 11),
-		 private->rdc_data.blk_size);
+		 private->rdc_data.blk_size,
+		 readonly ? ", read-only device" : "");
 	return 0;
 }
 
diff --git a/drivers/s390/block/dasd_genhd.c b/drivers/s390/block/dasd_genhd.c
index 94f92a1247f2..30a1ca3d08b7 100644
--- a/drivers/s390/block/dasd_genhd.c
+++ b/drivers/s390/block/dasd_genhd.c
@@ -70,7 +70,8 @@ int dasd_gendisk_alloc(struct dasd_block *block)
 	}
 	len += sprintf(gdp->disk_name + len, "%c", 'a'+(base->devindex%26));
 
-	if (block->base->features & DASD_FEATURE_READONLY)
+	if (base->features & DASD_FEATURE_READONLY ||
+	    test_bit(DASD_FLAG_DEVICE_RO, &base->flags))
 		set_disk_ro(gdp, 1);
 	gdp->private_data = block;
 	gdp->queue = block->request_queue;
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index ed73ce550822..a91d4a97d4f2 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -436,6 +436,10 @@ struct dasd_block {
 #define DASD_FLAG_OFFLINE	3	/* device is in offline processing */
 #define DASD_FLAG_EER_SNSS	4	/* A SNSS is required */
 #define DASD_FLAG_EER_IN_USE	5	/* A SNSS request is running */
+#define DASD_FLAG_DEVICE_RO	6	/* The device itself is read-only. Don't
+					 * confuse this with the user specified
+					 * read-only feature.
+					 */
 
 void dasd_put_device_wake(struct dasd_device *);
 
@@ -609,6 +613,9 @@ char *dasd_get_sense(struct irb *);
 void dasd_device_set_stop_bits(struct dasd_device *, int);
 void dasd_device_remove_stop_bits(struct dasd_device *, int);
 
+int dasd_device_is_ro(struct dasd_device *);
+
+
 /* externals in dasd_devmap.c */
 extern int dasd_max_devindex;
 extern int dasd_probeonly;
diff --git a/drivers/s390/block/dasd_ioctl.c b/drivers/s390/block/dasd_ioctl.c
index 7039d9cf0fb4..1557214944f7 100644
--- a/drivers/s390/block/dasd_ioctl.c
+++ b/drivers/s390/block/dasd_ioctl.c
@@ -17,6 +17,7 @@
 #include <linux/fs.h>
 #include <linux/blkpg.h>
 #include <linux/smp_lock.h>
+#include <linux/slab.h>
 #include <asm/compat.h>
 #include <asm/ccwdev.h>
 #include <asm/cmb.h>
@@ -199,7 +200,8 @@ dasd_ioctl_format(struct block_device *bdev, void __user *argp)
 	if (!argp)
 		return -EINVAL;
 
-	if (block->base->features & DASD_FEATURE_READONLY)
+	if (block->base->features & DASD_FEATURE_READONLY ||
+	    test_bit(DASD_FLAG_DEVICE_RO, &block->base->flags))
 		return -EROFS;
 	if (copy_from_user(&fdata, argp, sizeof(struct format_data_t)))
 		return -EFAULT;
@@ -349,7 +351,8 @@ dasd_ioctl_set_ro(struct block_device *bdev, void __user *argp)
 		return -EINVAL;
 	if (get_user(intval, (int __user *)argp))
 		return -EFAULT;
-
+	if (!intval && test_bit(DASD_FLAG_DEVICE_RO, &block->base->flags))
+		return -EROFS;
 	set_disk_ro(bdev->bd_disk, intval);
 	return dasd_set_feature(block->base->cdev, DASD_FEATURE_READONLY, intval);
 }
diff --git a/drivers/s390/block/dasd_proc.c b/drivers/s390/block/dasd_proc.c
index f13a0bdd148c..2eb025592809 100644
--- a/drivers/s390/block/dasd_proc.c
+++ b/drivers/s390/block/dasd_proc.c
@@ -14,6 +14,7 @@
 #define KMSG_COMPONENT "dasd"
 
 #include <linux/ctype.h>
+#include <linux/slab.h>
 #include <linux/string.h>
 #include <linux/seq_file.h>
 #include <linux/vmalloc.h>
diff --git a/drivers/s390/block/xpram.c b/drivers/s390/block/xpram.c
index 118de392af63..c881a14fa5dd 100644
--- a/drivers/s390/block/xpram.c
+++ b/drivers/s390/block/xpram.c
@@ -33,7 +33,6 @@
 #include <linux/ctype.h>  /* isdigit, isxdigit */
 #include <linux/errno.h>
 #include <linux/init.h>
-#include <linux/slab.h>
 #include <linux/blkdev.h>
 #include <linux/blkpg.h>
 #include <linux/hdreg.h>  /* HDIO_GETGEO */
@@ -41,6 +40,7 @@
 #include <linux/bio.h>
 #include <linux/suspend.h>
 #include <linux/platform_device.h>
+#include <linux/gfp.h>
 #include <asm/uaccess.h>
 
 #define XPRAM_NAME	"xpram"
diff --git a/drivers/s390/char/con3270.c b/drivers/s390/char/con3270.c
index 6bca81aea396..bb07577e8fd4 100644
--- a/drivers/s390/char/con3270.c
+++ b/drivers/s390/char/con3270.c
@@ -12,6 +12,7 @@
 #include <linux/interrupt.h>
 #include <linux/list.h>
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/reboot.h>
 
diff --git a/drivers/s390/char/fs3270.c b/drivers/s390/char/fs3270.c
index 31c59b0d6df0..0eabcca3c92d 100644
--- a/drivers/s390/char/fs3270.c
+++ b/drivers/s390/char/fs3270.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/smp_lock.h>
 
diff --git a/drivers/s390/char/keyboard.c b/drivers/s390/char/keyboard.c
index cee4d4e42429..cb6bffe7141a 100644
--- a/drivers/s390/char/keyboard.c
+++ b/drivers/s390/char/keyboard.c
@@ -9,6 +9,7 @@
 
 #include <linux/module.h>
 #include <linux/sched.h>
+#include <linux/slab.h>
 #include <linux/sysrq.h>
 
 #include <linux/consolemap.h>
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index 33e96484d54f..2ed3f82e5c30 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -21,6 +21,7 @@
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 #include <net/iucv/iucv.h>
 #include <asm/uaccess.h>
 #include <asm/ebcdic.h>
diff --git a/drivers/s390/char/monwriter.c b/drivers/s390/char/monwriter.c
index 668a0579b26b..98a49dfda1de 100644
--- a/drivers/s390/char/monwriter.c
+++ b/drivers/s390/char/monwriter.c
@@ -20,6 +20,7 @@
 #include <linux/poll.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
+#include <linux/slab.h>
 #include <asm/uaccess.h>
 #include <asm/ebcdic.h>
 #include <asm/io.h>
diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index 62ddf5202b79..2a4c566456e7 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -373,7 +373,7 @@ raw3270_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 		rq->rc = ccw_device_start(rp->cdev, &rq->ccw,
 					  (unsigned long) rq, 0, 0);
 		if (rq->rc == 0)
-			return;	/* Sucessfully restarted. */
+			return;	/* Successfully restarted. */
 		break;
 	case RAW3270_IO_STOP:
 		if (!rq)
diff --git a/drivers/s390/char/sclp.c b/drivers/s390/char/sclp.c
index ec88c59842e3..f6d72e1f2a38 100644
--- a/drivers/s390/char/sclp.c
+++ b/drivers/s390/char/sclp.c
@@ -196,7 +196,7 @@ __sclp_start_request(struct sclp_req *req)
 	req->start_count++;
 
 	if (rc == 0) {
-		/* Sucessfully started request */
+		/* Successfully started request */
 		req->status = SCLP_REQ_RUNNING;
 		sclp_running_state = sclp_running_state_running;
 		__sclp_set_request_timer(SCLP_RETRY_INTERVAL * HZ,
diff --git a/drivers/s390/char/sclp_async.c b/drivers/s390/char/sclp_async.c
index 740fe405c395..7ad30e72f868 100644
--- a/drivers/s390/char/sclp_async.c
+++ b/drivers/s390/char/sclp_async.c
@@ -11,6 +11,7 @@
 #include <linux/device.h>
 #include <linux/stat.h>
 #include <linux/string.h>
+#include <linux/slab.h>
 #include <linux/ctype.h>
 #include <linux/kmod.h>
 #include <linux/err.h>
@@ -84,6 +85,7 @@ static int proc_handler_callhome(struct ctl_table *ctl, int write,
 		rc = copy_from_user(buf, buffer, sizeof(buf));
 		if (rc != 0)
 			return -EFAULT;
+		buf[sizeof(buf) - 1] = '\0';
 		if (strict_strtoul(buf, 0, &val) != 0)
 			return -EINVAL;
 		if (val != 0 && val != 1)
diff --git a/drivers/s390/char/sclp_cmd.c b/drivers/s390/char/sclp_cmd.c
index b3beab610da4..4b60ede07f0e 100644
--- a/drivers/s390/char/sclp_cmd.c
+++ b/drivers/s390/char/sclp_cmd.c
@@ -308,6 +308,13 @@ struct assign_storage_sccb {
 	u16 rn;
 } __packed;
 
+int arch_get_memory_phys_device(unsigned long start_pfn)
+{
+	if (!rzm)
+		return 0;
+	return PFN_PHYS(start_pfn) >> ilog2(rzm);
+}
+
 static unsigned long long rn2addr(u16 rn)
 {
 	return (unsigned long long) (rn - 1) * rzm;
diff --git a/drivers/s390/char/sclp_con.c b/drivers/s390/char/sclp_con.c
index ad698d30cb3b..ecf45c54f8c4 100644
--- a/drivers/s390/char/sclp_con.c
+++ b/drivers/s390/char/sclp_con.c
@@ -14,6 +14,7 @@
 #include <linux/termios.h>
 #include <linux/err.h>
 #include <linux/reboot.h>
+#include <linux/gfp.h>
 
 #include "sclp.h"
 #include "sclp_rw.h"
diff --git a/drivers/s390/char/sclp_tty.c b/drivers/s390/char/sclp_tty.c
index 434ba04b1309..8258d590505f 100644
--- a/drivers/s390/char/sclp_tty.c
+++ b/drivers/s390/char/sclp_tty.c
@@ -13,10 +13,10 @@
 #include <linux/tty.h>
 #include <linux/tty_driver.h>
 #include <linux/tty_flip.h>
-#include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
+#include <linux/gfp.h>
 #include <asm/uaccess.h>
 
 #include "ctrlchar.h"
diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 3796ffdb8479..5d706e6c946f 100644
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -23,6 +23,7 @@
 #include <linux/interrupt.h>
 #include <linux/init.h>
 #include <linux/reboot.h>
+#include <linux/slab.h>
 
 #include <asm/uaccess.h>
 #include "sclp.h"
diff --git a/drivers/s390/char/tape_34xx.c b/drivers/s390/char/tape_34xx.c
index cb70fa1cf539..c17f35b6136a 100644
--- a/drivers/s390/char/tape_34xx.c
+++ b/drivers/s390/char/tape_34xx.c
@@ -15,6 +15,7 @@
 #include <linux/init.h>
 #include <linux/bio.h>
 #include <linux/workqueue.h>
+#include <linux/slab.h>
 
 #define TAPE_DBF_AREA	tape_34xx_dbf
 
diff --git a/drivers/s390/char/tape_3590.c b/drivers/s390/char/tape_3590.c
index 9821c5886613..fc993acf99b6 100644
--- a/drivers/s390/char/tape_3590.c
+++ b/drivers/s390/char/tape_3590.c
@@ -12,6 +12,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/bio.h>
 #include <asm/ebcdic.h>
diff --git a/drivers/s390/char/tape_class.c b/drivers/s390/char/tape_class.c
index b2864e3edb6d..55343df61edd 100644
--- a/drivers/s390/char/tape_class.c
+++ b/drivers/s390/char/tape_class.c
@@ -11,6 +11,8 @@
 #define KMSG_COMPONENT "tape"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/slab.h>
+
 #include "tape_class.h"
 
 MODULE_AUTHOR("Stefan Bader <shbader@de.ibm.com>");
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index 81b094e480e6..29c2d73d719d 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -20,6 +20,7 @@
 #include <linux/spinlock.h>  // for locks
 #include <linux/vmalloc.h>
 #include <linux/list.h>
+#include <linux/slab.h>
 
 #include <asm/types.h>	     // for variable types
 
diff --git a/drivers/s390/char/vmcp.c b/drivers/s390/char/vmcp.c
index 921dcda77676..5bb59d36a6d4 100644
--- a/drivers/s390/char/vmcp.c
+++ b/drivers/s390/char/vmcp.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/miscdevice.h>
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <asm/compat.h>
 #include <asm/cpcmd.h>
 #include <asm/debug.h>
diff --git a/drivers/s390/char/vmlogrdr.c b/drivers/s390/char/vmlogrdr.c
index 7dfa5412d5a8..e40a1b892866 100644
--- a/drivers/s390/char/vmlogrdr.c
+++ b/drivers/s390/char/vmlogrdr.c
@@ -16,6 +16,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/errno.h>
 #include <linux/types.h>
 #include <linux/interrupt.h>
diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index cc56fc708bae..1de672f21037 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -12,6 +12,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/cdev.h>
+#include <linux/slab.h>
 #include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
diff --git a/drivers/s390/char/vmwatchdog.c b/drivers/s390/char/vmwatchdog.c
index c974058e48d2..e13508c98b1a 100644
--- a/drivers/s390/char/vmwatchdog.c
+++ b/drivers/s390/char/vmwatchdog.c
@@ -17,6 +17,7 @@
 #include <linux/miscdevice.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/slab.h>
 #include <linux/suspend.h>
 #include <linux/watchdog.h>
 
diff --git a/drivers/s390/char/zcore.c b/drivers/s390/char/zcore.c
index 3438658b66b7..7217966f7d31 100644
--- a/drivers/s390/char/zcore.c
+++ b/drivers/s390/char/zcore.c
@@ -13,6 +13,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/init.h>
+#include <linux/slab.h>
 #include <linux/miscdevice.h>
 #include <linux/debugfs.h>
 #include <asm/asm-offsets.h>
@@ -141,33 +142,6 @@ static int memcpy_hsa_kernel(void *dest, unsigned long src, size_t count)
 	return memcpy_hsa(dest, src, count, TO_KERNEL);
 }
 
-static int memcpy_real(void *dest, unsigned long src, size_t count)
-{
-	unsigned long flags;
-	int rc = -EFAULT;
-	register unsigned long _dest asm("2") = (unsigned long) dest;
-	register unsigned long _len1 asm("3") = (unsigned long) count;
-	register unsigned long _src  asm("4") = src;
-	register unsigned long _len2 asm("5") = (unsigned long) count;
-
-	if (count == 0)
-		return 0;
-	flags = __raw_local_irq_stnsm(0xf8UL); /* switch to real mode */
-	asm volatile (
-		"0:	mvcle	%1,%2,0x0\n"
-		"1:	jo	0b\n"
-		"	lhi	%0,0x0\n"
-		"2:\n"
-		EX_TABLE(1b,2b)
-		: "+d" (rc), "+d" (_dest), "+d" (_src), "+d" (_len1),
-		  "+d" (_len2), "=m" (*((long*)dest))
-		: "m" (*((long*)src))
-		: "cc", "memory");
-	__raw_local_irq_ssm(flags);
-
-	return rc;
-}
-
 static int memcpy_real_user(void __user *dest, unsigned long src, size_t count)
 {
 	static char buf[4096];
@@ -175,7 +149,7 @@ static int memcpy_real_user(void __user *dest, unsigned long src, size_t count)
 
 	while (offs < count) {
 		size = min(sizeof(buf), count - offs);
-		if (memcpy_real(buf, src + offs, size))
+		if (memcpy_real(buf, (void *) src + offs, size))
 			return -EFAULT;
 		if (copy_to_user(dest + offs, buf, size))
 			return -EFAULT;
@@ -663,12 +637,8 @@ static int __init zcore_reipl_init(void)
 	if (ipib_info.ipib < ZFCPDUMP_HSA_SIZE)
 		rc = memcpy_hsa_kernel(ipl_block, ipib_info.ipib, PAGE_SIZE);
 	else
-		rc = memcpy_real(ipl_block, ipib_info.ipib, PAGE_SIZE);
-	if (rc) {
-		free_page((unsigned long) ipl_block);
-		return rc;
-	}
-	if (csum_partial(ipl_block, ipl_block->hdr.len, 0) !=
+		rc = memcpy_real(ipl_block, (void *) ipib_info.ipib, PAGE_SIZE);
+	if (rc || csum_partial(ipl_block, ipl_block->hdr.len, 0) !=
 	    ipib_info.checksum) {
 		TRACE("Checksum does not match\n");
 		free_page((unsigned long) ipl_block);
diff --git a/drivers/s390/cio/blacklist.c b/drivers/s390/cio/blacklist.c
index 7eab9ab9f406..13cb60162e42 100644
--- a/drivers/s390/cio/blacklist.c
+++ b/drivers/s390/cio/blacklist.c
@@ -14,7 +14,6 @@
 
 #include <linux/init.h>
 #include <linux/vmalloc.h>
-#include <linux/slab.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/ctype.h>
diff --git a/drivers/s390/cio/chp.c b/drivers/s390/cio/chp.c
index c268a2e5b7c3..1d16189f2f2d 100644
--- a/drivers/s390/cio/chp.c
+++ b/drivers/s390/cio/chp.c
@@ -15,6 +15,7 @@
 #include <linux/wait.h>
 #include <linux/mutex.h>
 #include <linux/errno.h>
+#include <linux/slab.h>
 #include <asm/chpid.h>
 #include <asm/sclp.h>
 #include <asm/crw.h>
diff --git a/drivers/s390/cio/chsc.c b/drivers/s390/cio/chsc.c
index 4038f5b4f144..ce7cb87479fe 100644
--- a/drivers/s390/cio/chsc.c
+++ b/drivers/s390/cio/chsc.c
@@ -29,6 +29,7 @@
 #include "chsc.h"
 
 static void *sei_page;
+static DEFINE_SPINLOCK(sda_lock);
 
 /**
  * chsc_error_from_response() - convert a chsc response to an error
@@ -832,11 +833,10 @@ void __init chsc_free_sei_area(void)
 	kfree(sei_page);
 }
 
-int __init
-chsc_enable_facility(int operation_code)
+int chsc_enable_facility(int operation_code)
 {
 	int ret;
-	struct {
+	static struct {
 		struct chsc_header request;
 		u8 reserved1:4;
 		u8 format:4;
@@ -849,33 +849,32 @@ chsc_enable_facility(int operation_code)
 		u32 reserved5:4;
 		u32 format2:4;
 		u32 reserved6:24;
-	} __attribute__ ((packed)) *sda_area;
+	} __attribute__ ((packed, aligned(4096))) sda_area;
 
-	sda_area = (void *)get_zeroed_page(GFP_KERNEL|GFP_DMA);
-	if (!sda_area)
-		return -ENOMEM;
-	sda_area->request.length = 0x0400;
-	sda_area->request.code = 0x0031;
-	sda_area->operation_code = operation_code;
+	spin_lock(&sda_lock);
+	memset(&sda_area, 0, sizeof(sda_area));
+	sda_area.request.length = 0x0400;
+	sda_area.request.code = 0x0031;
+	sda_area.operation_code = operation_code;
 
-	ret = chsc(sda_area);
+	ret = chsc(&sda_area);
 	if (ret > 0) {
 		ret = (ret == 3) ? -ENODEV : -EBUSY;
 		goto out;
 	}
 
-	switch (sda_area->response.code) {
+	switch (sda_area.response.code) {
 	case 0x0101:
 		ret = -EOPNOTSUPP;
 		break;
 	default:
-		ret = chsc_error_from_response(sda_area->response.code);
+		ret = chsc_error_from_response(sda_area.response.code);
 	}
 	if (ret != 0)
 		CIO_CRW_EVENT(2, "chsc: sda (oc=%x) failed (rc=%04x)\n",
-			      operation_code, sda_area->response.code);
+			      operation_code, sda_area.response.code);
  out:
-	free_page((unsigned long)sda_area);
+	spin_unlock(&sda_lock);
 	return ret;
 }
 
diff --git a/drivers/s390/cio/chsc_sch.c b/drivers/s390/cio/chsc_sch.c
index 852612f5dba0..3b6f4adc5094 100644
--- a/drivers/s390/cio/chsc_sch.c
+++ b/drivers/s390/cio/chsc_sch.c
@@ -7,6 +7,7 @@
  *
  */
 
+#include <linux/slab.h>
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/uaccess.h>
@@ -123,7 +124,7 @@ static int chsc_subchannel_prepare(struct subchannel *sch)
 	 * since we don't have a way to clear the subchannel and
 	 * cannot disable it with a request running.
 	 */
-	cc = stsch(sch->schid, &schib);
+	cc = stsch_err(sch->schid, &schib);
 	if (!cc && scsw_stctl(&schib.scsw))
 		return -EAGAIN;
 	return 0;
diff --git a/drivers/s390/cio/cio.c b/drivers/s390/cio/cio.c
index f736cdcf08ad..5feea1a371e1 100644
--- a/drivers/s390/cio/cio.c
+++ b/drivers/s390/cio/cio.c
@@ -361,7 +361,7 @@ int cio_commit_config(struct subchannel *sch)
 	struct schib schib;
 	int ccode, retry, ret = 0;
 
-	if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib))
+	if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib))
 		return -ENODEV;
 
 	for (retry = 0; retry < 5; retry++) {
@@ -372,7 +372,7 @@ int cio_commit_config(struct subchannel *sch)
 			return ccode;
 		switch (ccode) {
 		case 0: /* successful */
-			if (stsch(sch->schid, &schib) ||
+			if (stsch_err(sch->schid, &schib) ||
 			    !css_sch_is_valid(&schib))
 				return -ENODEV;
 			if (cio_check_config(sch, &schib)) {
@@ -404,7 +404,7 @@ int cio_update_schib(struct subchannel *sch)
 {
 	struct schib schib;
 
-	if (stsch(sch->schid, &schib) || !css_sch_is_valid(&schib))
+	if (stsch_err(sch->schid, &schib) || !css_sch_is_valid(&schib))
 		return -ENODEV;
 
 	memcpy(&sch->schib, &schib, sizeof(schib));
@@ -771,7 +771,7 @@ cio_get_console_sch_no(void)
 	if (console_irq != -1) {
 		/* VM provided us with the irq number of the console. */
 		schid.sch_no = console_irq;
-		if (stsch(schid, &console_subchannel.schib) != 0 ||
+		if (stsch_err(schid, &console_subchannel.schib) != 0 ||
 		    (console_subchannel.schib.pmcw.st != SUBCHANNEL_TYPE_IO) ||
 		    !console_subchannel.schib.pmcw.dnv)
 			return -1;
@@ -863,10 +863,10 @@ __disable_subchannel_easy(struct subchannel_id schid, struct schib *schib)
 	cc = 0;
 	for (retry=0;retry<3;retry++) {
 		schib->pmcw.ena = 0;
-		cc = msch(schid, schib);
+		cc = msch_err(schid, schib);
 		if (cc)
 			return (cc==3?-ENODEV:-EBUSY);
-		if (stsch(schid, schib) || !css_sch_is_valid(schib))
+		if (stsch_err(schid, schib) || !css_sch_is_valid(schib))
 			return -ENODEV;
 		if (!schib->pmcw.ena)
 			return 0;
@@ -913,7 +913,7 @@ static int stsch_reset(struct subchannel_id schid, struct schib *addr)
 
 	pgm_check_occured = 0;
 	s390_base_pgm_handler_fn = cio_reset_pgm_check_handler;
-	rc = stsch(schid, addr);
+	rc = stsch_err(schid, addr);
 	s390_base_pgm_handler_fn = NULL;
 
 	/* The program check handler could have changed pgm_check_occured. */
@@ -950,7 +950,7 @@ static int __shutdown_subchannel_easy(struct subchannel_id schid, void *data)
 			/* No default clear strategy */
 			break;
 		}
-		stsch(schid, &schib);
+		stsch_err(schid, &schib);
 		__disable_subchannel_easy(schid, &schib);
 	}
 out:
@@ -1086,7 +1086,7 @@ int __init cio_get_iplinfo(struct cio_iplinfo *iplinfo)
 	schid = *(struct subchannel_id *)&S390_lowcore.subchannel_id;
 	if (!schid.one)
 		return -ENODEV;
-	if (stsch(schid, &schib))
+	if (stsch_err(schid, &schib))
 		return -ENODEV;
 	if (schib.pmcw.st != SUBCHANNEL_TYPE_IO)
 		return -ENODEV;
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 2769da54f2b9..511649115bd7 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -870,15 +870,10 @@ static int __init css_bus_init(void)
 
 	/* Try to enable MSS. */
 	ret = chsc_enable_facility(CHSC_SDA_OC_MSS);
-	switch (ret) {
-	case 0: /* Success. */
-		max_ssid = __MAX_SSID;
-		break;
-	case -ENOMEM:
-		goto out;
-	default:
+	if (ret)
 		max_ssid = 0;
-	}
+	else /* Success. */
+		max_ssid = __MAX_SSID;
 
 	ret = slow_subchannel_init();
 	if (ret)
@@ -1048,6 +1043,11 @@ static int __init channel_subsystem_init_sync(void)
 }
 subsys_initcall_sync(channel_subsystem_init_sync);
 
+void channel_subsystem_reinit(void)
+{
+	chsc_enable_facility(CHSC_SDA_OC_MSS);
+}
+
 #ifdef CONFIG_PROC_FS
 static ssize_t cio_settle_write(struct file *file, const char __user *buf,
 				size_t count, loff_t *ppos)
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index c6abb75c4615..6d229f3523a0 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -764,7 +764,7 @@ static void sch_create_and_recog_new_device(struct subchannel *sch)
 static void io_subchannel_register(struct ccw_device *cdev)
 {
 	struct subchannel *sch;
-	int ret;
+	int ret, adjust_init_count = 1;
 	unsigned long flags;
 
 	sch = to_subchannel(cdev->dev.parent);
@@ -793,6 +793,7 @@ static void io_subchannel_register(struct ccw_device *cdev)
 					      cdev->private->dev_id.ssid,
 					      cdev->private->dev_id.devno);
 		}
+		adjust_init_count = 0;
 		goto out;
 	}
 	/*
@@ -818,7 +819,7 @@ out:
 	cdev->private->flags.recog_done = 1;
 	wake_up(&cdev->private->wait_q);
 out_err:
-	if (atomic_dec_and_test(&ccw_device_init_count))
+	if (adjust_init_count && atomic_dec_and_test(&ccw_device_init_count))
 		wake_up(&ccw_device_init_wq);
 }
 
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index c56ab94612f9..c9b852647f01 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -45,7 +45,7 @@ static void ccw_timeout_log(struct ccw_device *cdev)
 	sch = to_subchannel(cdev->dev.parent);
 	private = to_io_private(sch);
 	orb = &private->orb;
-	cc = stsch(sch->schid, &schib);
+	cc = stsch_err(sch->schid, &schib);
 
 	printk(KERN_WARNING "cio: ccw device timeout occurred at %llx, "
 	       "device information:\n", get_clock());
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index c94eb2a0fa2e..6ce83f56d537 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -33,7 +33,6 @@ void qdio_allocate_dbf(struct qdio_initialize *init_data,
 	DBF_HEX(&init_data->input_handler, sizeof(void *));
 	DBF_HEX(&init_data->output_handler, sizeof(void *));
 	DBF_HEX(&init_data->int_parm, sizeof(long));
-	DBF_HEX(&init_data->flags, sizeof(long));
 	DBF_HEX(&init_data->input_sbal_addr_array, sizeof(void *));
 	DBF_HEX(&init_data->output_sbal_addr_array, sizeof(void *));
 	DBF_EVENT("irq:%8lx", (unsigned long)irq_ptr);
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 232ef047ba34..88be7b9ea6e1 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/timer.h>
 #include <linux/delay.h>
+#include <linux/gfp.h>
 #include <asm/atomic.h>
 #include <asm/debug.h>
 #include <asm/qdio.h>
@@ -588,10 +589,11 @@ static void qdio_kick_handler(struct qdio_q *q)
 	if (q->is_input_q) {
 		qperf_inc(q, inbound_handler);
 		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count);
-	} else
+	} else {
 		qperf_inc(q, outbound_handler);
 		DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x",
 			      start, count);
+	}
 
 	q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count,
 		   q->irq_ptr->int_parm);
diff --git a/drivers/s390/cio/qdio_thinint.c b/drivers/s390/cio/qdio_thinint.c
index 9942c1031b25..ce5f8910ff83 100644
--- a/drivers/s390/cio/qdio_thinint.c
+++ b/drivers/s390/cio/qdio_thinint.c
@@ -7,6 +7,7 @@
  *	      Jan Glauber <jang@linux.vnet.ibm.com>
  */
 #include <linux/io.h>
+#include <linux/slab.h>
 #include <asm/atomic.h>
 #include <asm/debug.h>
 #include <asm/qdio.h>
diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 20836eff88c5..91c6028d7b74 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -33,6 +33,7 @@
 #include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/workqueue.h>
+#include <linux/slab.h>
 #include <linux/notifier.h>
 #include <linux/kthread.h>
 #include <linux/mutex.h>
diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index ba50fe02e572..304caf549973 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -36,6 +36,7 @@
 #include <linux/seq_file.h>
 #include <linux/compat.h>
 #include <linux/smp_lock.h>
+#include <linux/slab.h>
 #include <asm/atomic.h>
 #include <asm/uaccess.h>
 #include <linux/hw_random.h>
diff --git a/drivers/s390/crypto/zcrypt_cex2a.c b/drivers/s390/crypto/zcrypt_cex2a.c
index c6fb0aa89507..9c409efa1ecf 100644
--- a/drivers/s390/crypto/zcrypt_cex2a.c
+++ b/drivers/s390/crypto/zcrypt_cex2a.c
@@ -27,6 +27,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <asm/atomic.h>
diff --git a/drivers/s390/crypto/zcrypt_pcica.c b/drivers/s390/crypto/zcrypt_pcica.c
index e78df3671caf..09e934b295a0 100644
--- a/drivers/s390/crypto/zcrypt_pcica.c
+++ b/drivers/s390/crypto/zcrypt_pcica.c
@@ -27,6 +27,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <asm/atomic.h>
diff --git a/drivers/s390/crypto/zcrypt_pcicc.c b/drivers/s390/crypto/zcrypt_pcicc.c
index 142f72a2ca5a..9dec5c77cff4 100644
--- a/drivers/s390/crypto/zcrypt_pcicc.c
+++ b/drivers/s390/crypto/zcrypt_pcicc.c
@@ -28,6 +28,7 @@
 
 #include <linux/module.h>
 #include <linux/init.h>
+#include <linux/gfp.h>
 #include <linux/err.h>
 #include <asm/atomic.h>
 #include <asm/uaccess.h>
diff --git a/drivers/s390/crypto/zcrypt_pcixcc.c b/drivers/s390/crypto/zcrypt_pcixcc.c
index 68f3e6204db8..510fab4577d4 100644
--- a/drivers/s390/crypto/zcrypt_pcixcc.c
+++ b/drivers/s390/crypto/zcrypt_pcixcc.c
@@ -30,6 +30,7 @@
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/slab.h>
 #include <asm/atomic.h>
 #include <asm/uaccess.h>
 
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index b2fc4fd63f7f..4e298bc8949d 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -15,6 +15,7 @@
 #include <linux/err.h>
 #include <linux/virtio.h>
 #include <linux/virtio_config.h>
+#include <linux/slab.h>
 #include <linux/virtio_console.h>
 #include <linux/interrupt.h>
 #include <linux/virtio_ring.h>
diff --git a/drivers/s390/net/Kconfig b/drivers/s390/net/Kconfig
index cb909a5b5047..977bb4d4ed15 100644
--- a/drivers/s390/net/Kconfig
+++ b/drivers/s390/net/Kconfig
@@ -43,6 +43,16 @@ config SMSGIUCV
 	  Select this option if you want to be able to receive SMSG messages
 	  from other VM guest systems.
 
+config SMSGIUCV_EVENT
+	tristate "Deliver IUCV special messages as uevents (VM only)"
+	depends on SMSGIUCV
+	help
+	  Select this option to deliver CP special messages (SMSGs) as
+	  uevents.  The driver handles only those special messages that
+	  start with "APP".
+
+	  To compile as a module, choose M. The module name is "smsgiucv_app".
+
 config CLAW
 	tristate "CLAW device support"
 	depends on CCW && NETDEVICES
diff --git a/drivers/s390/net/Makefile b/drivers/s390/net/Makefile
index 6cab5a62f99e..4dfe8c1092da 100644
--- a/drivers/s390/net/Makefile
+++ b/drivers/s390/net/Makefile
@@ -6,6 +6,7 @@ ctcm-y += ctcm_main.o ctcm_fsms.o ctcm_mpc.o ctcm_sysfs.o ctcm_dbug.o
 obj-$(CONFIG_CTCM) += ctcm.o fsm.o
 obj-$(CONFIG_NETIUCV) += netiucv.o fsm.o
 obj-$(CONFIG_SMSGIUCV) += smsgiucv.o
+obj-$(CONFIG_SMSGIUCV_EVENT) += smsgiucv_app.o
 obj-$(CONFIG_LCS) += lcs.o
 obj-$(CONFIG_CLAW) += claw.o
 qeth-y += qeth_core_sys.o qeth_core_main.o qeth_core_mpc.o
diff --git a/drivers/s390/net/ctcm_dbug.c b/drivers/s390/net/ctcm_dbug.c
index 1ca58f153470..d962fd741a23 100644
--- a/drivers/s390/net/ctcm_dbug.c
+++ b/drivers/s390/net/ctcm_dbug.c
@@ -10,7 +10,6 @@
 #include <linux/string.h>
 #include <linux/kernel.h>
 #include <linux/errno.h>
-#include <linux/slab.h>
 #include <linux/ctype.h>
 #include <linux/sysctl.h>
 #include <linux/module.h>
diff --git a/drivers/s390/net/ctcm_sysfs.c b/drivers/s390/net/ctcm_sysfs.c
index 738ad26c74a7..2b24550e865e 100644
--- a/drivers/s390/net/ctcm_sysfs.c
+++ b/drivers/s390/net/ctcm_sysfs.c
@@ -14,6 +14,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/sysfs.h>
+#include <linux/slab.h>
 #include "ctcm_main.h"
 
 /*
diff --git a/drivers/s390/net/fsm.c b/drivers/s390/net/fsm.c
index cae48cbc5e96..e5dea67f902e 100644
--- a/drivers/s390/net/fsm.c
+++ b/drivers/s390/net/fsm.c
@@ -5,6 +5,7 @@
 
 #include "fsm.h"
 #include <linux/module.h>
+#include <linux/slab.h>
 #include <linux/timer.h>
 
 MODULE_AUTHOR("(C) 2000 IBM Corp. by Fritz Elfert (felfert@millenux.com)");
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index f6cc46dc0501..9b19ea13b4d8 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -37,6 +37,7 @@
 #include <linux/igmp.h>
 #include <linux/delay.h>
 #include <linux/kthread.h>
+#include <linux/slab.h>
 #include <net/arp.h>
 #include <net/ip.h>
 
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index a3ac4456e0b1..fcd005aad989 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -763,7 +763,8 @@ static inline int qeth_get_micros(void)
 
 static inline int qeth_get_ip_version(struct sk_buff *skb)
 {
-	switch (skb->protocol) {
+	struct ethhdr *ehdr = (struct ethhdr *)skb->data;
+	switch (ehdr->h_proto) {
 	case ETH_P_IPV6:
 		return 6;
 	case ETH_P_IP:
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index fa8a519218ac..3ba738b2e271 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -20,6 +20,7 @@
 #include <linux/tcp.h>
 #include <linux/mii.h>
 #include <linux/kthread.h>
+#include <linux/slab.h>
 
 #include <asm/ebcdic.h>
 #include <asm/io.h>
@@ -537,7 +538,8 @@ static void qeth_send_control_data_cb(struct qeth_channel *channel,
 			dev_err(&card->gdev->dev,
 				"The qeth device is not configured "
 				"for the OSI layer required by z/VM\n");
-		qeth_schedule_recovery(card);
+		else
+			qeth_schedule_recovery(card);
 		goto out;
 	}
 
@@ -1113,8 +1115,6 @@ static int qeth_setup_card(struct qeth_card *card)
 	card->ipato.enabled = 0;
 	card->ipato.invert4 = 0;
 	card->ipato.invert6 = 0;
-	if (card->info.type == QETH_CARD_TYPE_IQD)
-		card->options.checksum_type = NO_CHECKSUMMING;
 	/* init QDIO stuff */
 	qeth_init_qdio_info(card);
 	return 0;
@@ -3805,9 +3805,6 @@ static int qeth_qdio_establish(struct qeth_card *card)
 	init_data.input_handler          = card->discipline.input_handler;
 	init_data.output_handler         = card->discipline.output_handler;
 	init_data.int_parm               = (unsigned long) card;
-	init_data.flags                  = QDIO_INBOUND_0COPY_SBALS |
-					   QDIO_OUTBOUND_0COPY_SBALS |
-					   QDIO_USE_OUTBOUND_PCIS;
 	init_data.input_sbal_addr_array  = (void **) in_sbal_ptrs;
 	init_data.output_sbal_addr_array = (void **) out_sbal_ptrs;
 
diff --git a/drivers/s390/net/qeth_core_sys.c b/drivers/s390/net/qeth_core_sys.c
index 88ae4357136a..25dfd5abd19b 100644
--- a/drivers/s390/net/qeth_core_sys.c
+++ b/drivers/s390/net/qeth_core_sys.c
@@ -8,6 +8,9 @@
  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
  */
 
+#define KMSG_COMPONENT "qeth"
+#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
+
 #include <linux/list.h>
 #include <linux/rwsem.h>
 #include <asm/ebcdic.h>
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 51fde6f2e0b8..6a801dc3bf8e 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -16,6 +16,7 @@
 #include <linux/string.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
+#include <linux/slab.h>
 #include <linux/etherdevice.h>
 #include <linux/mii.h>
 #include <linux/ip.h>
@@ -1071,11 +1072,9 @@ static int qeth_l2_recover(void *ptr)
 		dev_info(&card->gdev->dev,
 			"Device successfully recovered!\n");
 	else {
-		if (card->dev) {
-			rtnl_lock();
-			dev_close(card->dev);
-			rtnl_unlock();
-		}
+		rtnl_lock();
+		dev_close(card->dev);
+		rtnl_unlock();
 		dev_warn(&card->gdev->dev, "The qeth device driver "
 			"failed to recover an error on the device\n");
 	}
@@ -1129,11 +1128,9 @@ static int qeth_l2_pm_resume(struct ccwgroup_device *gdev)
 	if (card->state == CARD_STATE_RECOVER) {
 		rc = __qeth_l2_set_online(card->gdev, 1);
 		if (rc) {
-			if (card->dev) {
-				rtnl_lock();
-				dev_close(card->dev);
-				rtnl_unlock();
-			}
+			rtnl_lock();
+			dev_close(card->dev);
+			rtnl_unlock();
 		}
 	} else
 		rc = __qeth_l2_set_online(card->gdev, 0);
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 5475834ab916..fc6ca1da8b98 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -22,6 +22,7 @@
 #include <linux/ipv6.h>
 #include <linux/inetdevice.h>
 #include <linux/igmp.h>
+#include <linux/slab.h>
 
 #include <net/ip.h>
 #include <net/arp.h>
@@ -1691,39 +1692,43 @@ qeth_diags_trace_cb(struct qeth_card *card, struct qeth_reply *reply,
 
 	cmd = (struct qeth_ipa_cmd *)data;
 	rc = cmd->hdr.return_code;
-	if (rc) {
+	if (rc)
 		QETH_DBF_TEXT_(TRACE, 2, "dxter%x", rc);
-		if (cmd->data.diagass.action == QETH_DIAGS_CMD_TRACE_ENABLE) {
-			switch (rc) {
-			case IPA_RC_HARDWARE_AUTH_ERROR:
-				dev_warn(&card->gdev->dev, "The device is not "
-					"authorized to run as a HiperSockets "
-					"network traffic analyzer\n");
-				break;
-			case IPA_RC_TRACE_ALREADY_ACTIVE:
-				dev_warn(&card->gdev->dev, "A HiperSockets "
-					"network traffic analyzer is already "
-					"active in the HiperSockets LAN\n");
-				break;
-			default:
-				break;
-			}
-		}
-		return 0;
-	}
-
 	switch (cmd->data.diagass.action) {
 	case QETH_DIAGS_CMD_TRACE_QUERY:
 		break;
 	case QETH_DIAGS_CMD_TRACE_DISABLE:
-		card->info.promisc_mode = SET_PROMISC_MODE_OFF;
-		dev_info(&card->gdev->dev, "The HiperSockets network traffic "
-			"analyzer is deactivated\n");
+		switch (rc) {
+		case 0:
+		case IPA_RC_INVALID_SUBCMD:
+			card->info.promisc_mode = SET_PROMISC_MODE_OFF;
+			dev_info(&card->gdev->dev, "The HiperSockets network "
+				"traffic analyzer is deactivated\n");
+			break;
+		default:
+			break;
+		}
 		break;
 	case QETH_DIAGS_CMD_TRACE_ENABLE:
-		card->info.promisc_mode = SET_PROMISC_MODE_ON;
-		dev_info(&card->gdev->dev, "The HiperSockets network traffic "
-			"analyzer is activated\n");
+		switch (rc) {
+		case 0:
+			card->info.promisc_mode = SET_PROMISC_MODE_ON;
+			dev_info(&card->gdev->dev, "The HiperSockets network "
+				"traffic analyzer is activated\n");
+			break;
+		case IPA_RC_HARDWARE_AUTH_ERROR:
+			dev_warn(&card->gdev->dev, "The device is not "
+				"authorized to run as a HiperSockets network "
+				"traffic analyzer\n");
+			break;
+		case IPA_RC_TRACE_ALREADY_ACTIVE:
+			dev_warn(&card->gdev->dev, "A HiperSockets "
+				"network traffic analyzer is already "
+				"active in the HiperSockets LAN\n");
+			break;
+		default:
+			break;
+		}
 		break;
 	default:
 		QETH_DBF_MESSAGE(2, "Unknown sniffer action (0x%04x) on %s\n",
@@ -2215,11 +2220,9 @@ static int qeth_l3_stop_card(struct qeth_card *card, int recovery_mode)
 		if (recovery_mode)
 			qeth_l3_stop(card->dev);
 		else {
-			if (card->dev) {
-				rtnl_lock();
-				dev_close(card->dev);
-				rtnl_unlock();
-			}
+			rtnl_lock();
+			dev_close(card->dev);
+			rtnl_unlock();
 		}
 		if (!card->use_hard_stop) {
 			rc = qeth_send_stoplan(card);
@@ -2900,10 +2903,8 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 	int data_offset = -1;
 	int nr_frags;
 
-	if ((card->info.type == QETH_CARD_TYPE_IQD) &&
-	    (((skb->protocol != htons(ETH_P_IPV6)) &&
-	      (skb->protocol != htons(ETH_P_IP))) ||
-	     card->options.sniffer))
+	if (((card->info.type == QETH_CARD_TYPE_IQD) && (!ipv)) ||
+	     card->options.sniffer)
 			goto tx_drop;
 
 	if ((card->state != CARD_STATE_UP) || !card->lan_online) {
@@ -2949,14 +2950,14 @@ static int qeth_l3_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
 		if (data_offset < 0)
 			skb_pull(new_skb, ETH_HLEN);
 	} else {
-		if (new_skb->protocol == htons(ETH_P_IP)) {
+		if (ipv == 4) {
 			if (card->dev->type == ARPHRD_IEEE802_TR)
 				skb_pull(new_skb, TR_HLEN);
 			else
 				skb_pull(new_skb, ETH_HLEN);
 		}
 
-		if (new_skb->protocol == ETH_P_IPV6 && card->vlangrp &&
+		if (ipv == 6 && card->vlangrp &&
 				vlan_tx_tag_present(new_skb)) {
 			skb_push(new_skb, VLAN_HLEN);
 			skb_copy_to_linear_data(new_skb, new_skb->data + 4, 4);
@@ -3534,11 +3535,9 @@ static int qeth_l3_pm_resume(struct ccwgroup_device *gdev)
 	if (card->state == CARD_STATE_RECOVER) {
 		rc = __qeth_l3_set_online(card->gdev, 1);
 		if (rc) {
-			if (card->dev) {
-				rtnl_lock();
-				dev_close(card->dev);
-				rtnl_unlock();
-			}
+			rtnl_lock();
+			dev_close(card->dev);
+			rtnl_unlock();
 		}
 	} else
 		rc = __qeth_l3_set_online(card->gdev, 0);
diff --git a/drivers/s390/net/qeth_l3_sys.c b/drivers/s390/net/qeth_l3_sys.c
index 3f08b11274ae..25b3e7aae44f 100644
--- a/drivers/s390/net/qeth_l3_sys.c
+++ b/drivers/s390/net/qeth_l3_sys.c
@@ -8,6 +8,8 @@
  *		 Frank Blaschka <frank.blaschka@de.ibm.com>
  */
 
+#include <linux/slab.h>
+
 #include "qeth_l3.h"
 
 #define QETH_DEVICE_ATTR(_id, _name, _mode, _show, _store) \
diff --git a/drivers/s390/net/smsgiucv.c b/drivers/s390/net/smsgiucv.c
index 67f2485d2372..70491274da16 100644
--- a/drivers/s390/net/smsgiucv.c
+++ b/drivers/s390/net/smsgiucv.c
@@ -24,6 +24,7 @@
 #include <linux/init.h>
 #include <linux/errno.h>
 #include <linux/device.h>
+#include <linux/slab.h>
 #include <net/iucv/iucv.h>
 #include <asm/cpcmd.h>
 #include <asm/ebcdic.h>
@@ -31,9 +32,9 @@
 
 struct smsg_callback {
 	struct list_head list;
-	char *prefix;
+	const char *prefix;
 	int len;
-	void (*callback)(char *from, char *str);
+	void (*callback)(const char *from, char *str);
 };
 
 MODULE_AUTHOR
@@ -100,8 +101,8 @@ static void smsg_message_pending(struct iucv_path *path,
 	kfree(buffer);
 }
 
-int smsg_register_callback(char *prefix,
-			   void (*callback)(char *from, char *str))
+int smsg_register_callback(const char *prefix,
+			   void (*callback)(const char *from, char *str))
 {
 	struct smsg_callback *cb;
 
@@ -117,8 +118,9 @@ int smsg_register_callback(char *prefix,
 	return 0;
 }
 
-void smsg_unregister_callback(char *prefix,
-			      void (*callback)(char *from, char *str))
+void smsg_unregister_callback(const char *prefix,
+			      void (*callback)(const char *from,
+					       char *str))
 {
 	struct smsg_callback *cb, *tmp;
 
@@ -176,7 +178,7 @@ static const struct dev_pm_ops smsg_pm_ops = {
 
 static struct device_driver smsg_driver = {
 	.owner = THIS_MODULE,
-	.name = "SMSGIUCV",
+	.name = SMSGIUCV_DRV_NAME,
 	.bus  = &iucv_bus,
 	.pm = &smsg_pm_ops,
 };
diff --git a/drivers/s390/net/smsgiucv.h b/drivers/s390/net/smsgiucv.h
index 67f5d4f8378d..149a1151608d 100644
--- a/drivers/s390/net/smsgiucv.h
+++ b/drivers/s390/net/smsgiucv.h
@@ -5,6 +5,10 @@
  * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com)
  */
 
-int  smsg_register_callback(char *, void (*)(char *, char *));
-void smsg_unregister_callback(char *, void (*)(char *, char *));
+#define SMSGIUCV_DRV_NAME     "SMSGIUCV"
+
+int  smsg_register_callback(const char *,
+			    void (*)(const char *, char *));
+void smsg_unregister_callback(const char *,
+			      void (*)(const char *, char *));
 
diff --git a/drivers/s390/net/smsgiucv_app.c b/drivers/s390/net/smsgiucv_app.c
new file mode 100644
index 000000000000..137688790207
--- /dev/null
+++ b/drivers/s390/net/smsgiucv_app.c
@@ -0,0 +1,212 @@
+/*
+ * Deliver z/VM CP special messages (SMSG) as uevents.
+ *
+ * The driver registers for z/VM CP special messages with the
+ * "APP" prefix. Incoming messages are delivered to user space
+ * as uevents.
+ *
+ * Copyright IBM Corp. 2010
+ * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ *
+ */
+#define KMSG_COMPONENT		"smsgiucv_app"
+#define pr_fmt(fmt)		KMSG_COMPONENT ": " fmt
+
+#include <linux/ctype.h>
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/list.h>
+#include <linux/kobject.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/workqueue.h>
+#include <net/iucv/iucv.h>
+#include "smsgiucv.h"
+
+/* prefix used for SMSG registration */
+#define SMSG_PREFIX		"APP"
+
+/* SMSG related uevent environment variables */
+#define ENV_SENDER_STR		"SMSG_SENDER="
+#define ENV_SENDER_LEN		(strlen(ENV_SENDER_STR) + 8 + 1)
+#define ENV_PREFIX_STR		"SMSG_ID="
+#define ENV_PREFIX_LEN		(strlen(ENV_PREFIX_STR) + \
+				 strlen(SMSG_PREFIX) + 1)
+#define ENV_TEXT_STR		"SMSG_TEXT="
+#define ENV_TEXT_LEN(msg)	(strlen(ENV_TEXT_STR) + strlen((msg)) + 1)
+
+/* z/VM user ID which is permitted to send SMSGs
+ * If the value is undefined or empty (""), special messages are
+ * accepted from any z/VM user ID. */
+static char *sender;
+module_param(sender, charp, 0400);
+MODULE_PARM_DESC(sender, "z/VM user ID from which CP SMSGs are accepted");
+
+/* SMSG device representation */
+static struct device *smsg_app_dev;
+
+/* list element for queuing received messages for delivery */
+struct smsg_app_event {
+	struct list_head list;
+	char *buf;
+	char *envp[4];
+};
+
+/* queue for outgoing uevents */
+static LIST_HEAD(smsg_event_queue);
+static DEFINE_SPINLOCK(smsg_event_queue_lock);
+
+static void smsg_app_event_free(struct smsg_app_event *ev)
+{
+	kfree(ev->buf);
+	kfree(ev);
+}
+
+static struct smsg_app_event *smsg_app_event_alloc(const char *from,
+						   const char *msg)
+{
+	struct smsg_app_event *ev;
+
+	ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
+	if (!ev)
+		return NULL;
+
+	ev->buf = kzalloc(ENV_SENDER_LEN + ENV_PREFIX_LEN +
+			  ENV_TEXT_LEN(msg), GFP_ATOMIC);
+	if (!ev->buf) {
+		kfree(ev);
+		return NULL;
+	}
+
+	/* setting up environment pointers into buf */
+	ev->envp[0] = ev->buf;
+	ev->envp[1] = ev->envp[0] + ENV_SENDER_LEN;
+	ev->envp[2] = ev->envp[1] + ENV_PREFIX_LEN;
+	ev->envp[3] = NULL;
+
+	/* setting up environment: sender, prefix name, and message text */
+	snprintf(ev->envp[0], ENV_SENDER_LEN, ENV_SENDER_STR "%s", from);
+	snprintf(ev->envp[1], ENV_PREFIX_LEN, ENV_PREFIX_STR "%s", SMSG_PREFIX);
+	snprintf(ev->envp[2], ENV_TEXT_LEN(msg), ENV_TEXT_STR "%s", msg);
+
+	return ev;
+}
+
+static void smsg_event_work_fn(struct work_struct *work)
+{
+	LIST_HEAD(event_queue);
+	struct smsg_app_event *p, *n;
+	struct device *dev;
+
+	dev = get_device(smsg_app_dev);
+	if (!dev)
+		return;
+
+	spin_lock_bh(&smsg_event_queue_lock);
+	list_splice_init(&smsg_event_queue, &event_queue);
+	spin_unlock_bh(&smsg_event_queue_lock);
+
+	list_for_each_entry_safe(p, n, &event_queue, list) {
+		list_del(&p->list);
+		kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, p->envp);
+		smsg_app_event_free(p);
+	}
+
+	put_device(dev);
+}
+static DECLARE_WORK(smsg_event_work, smsg_event_work_fn);
+
+static void smsg_app_callback(const char *from, char *msg)
+{
+	struct smsg_app_event *se;
+
+	/* check if the originating z/VM user ID matches
+	 * the configured sender. */
+	if (sender && strlen(sender) > 0 && strcmp(from, sender) != 0)
+		return;
+
+	/* get start of message text (skip prefix and leading blanks) */
+	msg += strlen(SMSG_PREFIX);
+	while (*msg && isspace(*msg))
+		msg++;
+	if (*msg == '\0')
+		return;
+
+	/* allocate event list element and its environment */
+	se = smsg_app_event_alloc(from, msg);
+	if (!se)
+		return;
+
+	/* queue event and schedule work function */
+	spin_lock(&smsg_event_queue_lock);
+	list_add_tail(&se->list, &smsg_event_queue);
+	spin_unlock(&smsg_event_queue_lock);
+
+	schedule_work(&smsg_event_work);
+	return;
+}
+
+static int __init smsgiucv_app_init(void)
+{
+	struct device_driver *smsgiucv_drv;
+	int rc;
+
+	if (!MACHINE_IS_VM)
+		return -ENODEV;
+
+	smsg_app_dev = kzalloc(sizeof(*smsg_app_dev), GFP_KERNEL);
+	if (!smsg_app_dev)
+		return -ENOMEM;
+
+	smsgiucv_drv = driver_find(SMSGIUCV_DRV_NAME, &iucv_bus);
+	if (!smsgiucv_drv) {
+		kfree(smsg_app_dev);
+		return -ENODEV;
+	}
+
+	rc = dev_set_name(smsg_app_dev, KMSG_COMPONENT);
+	if (rc) {
+		kfree(smsg_app_dev);
+		goto fail_put_driver;
+	}
+	smsg_app_dev->bus = &iucv_bus;
+	smsg_app_dev->parent = iucv_root;
+	smsg_app_dev->release = (void (*)(struct device *)) kfree;
+	smsg_app_dev->driver = smsgiucv_drv;
+	rc = device_register(smsg_app_dev);
+	if (rc) {
+		put_device(smsg_app_dev);
+		goto fail_put_driver;
+	}
+
+	/* register with the smsgiucv device driver */
+	rc = smsg_register_callback(SMSG_PREFIX, smsg_app_callback);
+	if (rc) {
+		device_unregister(smsg_app_dev);
+		goto fail_put_driver;
+	}
+
+	rc = 0;
+fail_put_driver:
+	put_driver(smsgiucv_drv);
+	return rc;
+}
+module_init(smsgiucv_app_init);
+
+static void __exit smsgiucv_app_exit(void)
+{
+	/* unregister callback */
+	smsg_unregister_callback(SMSG_PREFIX, smsg_app_callback);
+
+	/* cancel pending work and flush any queued event work */
+	cancel_work_sync(&smsg_event_work);
+	smsg_event_work_fn(&smsg_event_work);
+
+	device_unregister(smsg_app_dev);
+}
+module_exit(smsgiucv_app_exit);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Deliver z/VM CP SMSG as uevents");
+MODULE_AUTHOR("Hendrik Brueckner <brueckner@linux.vnet.ibm.com>");
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 66d6c01fcf3e..1e6183a86ce5 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -30,6 +30,7 @@
 
 #include <linux/miscdevice.h>
 #include <linux/seq_file.h>
+#include <linux/slab.h>
 #include "zfcp_ext.h"
 #include "zfcp_fc.h"
 #include "zfcp_reqlist.h"
diff --git a/drivers/s390/scsi/zfcp_cfdc.c b/drivers/s390/scsi/zfcp_cfdc.c
index 0eb6eefd2c1a..25d9e0ae9c57 100644
--- a/drivers/s390/scsi/zfcp_cfdc.c
+++ b/drivers/s390/scsi/zfcp_cfdc.c
@@ -10,6 +10,7 @@
 #define KMSG_COMPONENT "zfcp"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/miscdevice.h>
 #include <asm/compat.h>
diff --git a/drivers/s390/scsi/zfcp_dbf.c b/drivers/s390/scsi/zfcp_dbf.c
index 7a149fd85f6d..075852f6968c 100644
--- a/drivers/s390/scsi/zfcp_dbf.c
+++ b/drivers/s390/scsi/zfcp_dbf.c
@@ -10,6 +10,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/ctype.h>
+#include <linux/slab.h>
 #include <asm/debug.h>
 #include "zfcp_dbf.h"
 #include "zfcp_ext.h"
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 5219670f0c99..2a1cbb74b99b 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -10,6 +10,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <scsi/fc/fc_els.h>
 #include <scsi/libfc.h>
 #include "zfcp_ext.h"
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 6538742b421a..b3b1d2f79398 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -10,6 +10,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/blktrace_api.h>
+#include <linux/slab.h>
 #include <scsi/fc/fc_els.h>
 #include "zfcp_ext.h"
 #include "zfcp_fc.h"
@@ -2104,7 +2105,8 @@ static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
 	blktrc.inb_usage = req->qdio_req.qdio_inb_usage;
 	blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
 
-	if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA) {
+	if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
+	    !(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
 		blktrc.flags |= ZFCP_BLK_LAT_VALID;
 		blktrc.channel_lat = lat_in->channel_lat * ticks;
 		blktrc.fabric_lat = lat_in->fabric_lat * ticks;
@@ -2156,9 +2158,8 @@ static void zfcp_fsf_send_fcp_command_task_handler(struct zfcp_fsf_req *req)
 	fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
 	zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
 
-	zfcp_fsf_req_trace(req, scpnt);
-
 skip_fsfstatus:
+	zfcp_fsf_req_trace(req, scpnt);
 	zfcp_dbf_scsi_result(req->adapter->dbf, scpnt, req);
 
 	scpnt->host_scribble = NULL;
diff --git a/drivers/s390/scsi/zfcp_qdio.c b/drivers/s390/scsi/zfcp_qdio.c
index 71b97ff77cf0..dbfa312a7f50 100644
--- a/drivers/s390/scsi/zfcp_qdio.c
+++ b/drivers/s390/scsi/zfcp_qdio.c
@@ -9,6 +9,7 @@
 #define KMSG_COMPONENT "zfcp"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/slab.h>
 #include "zfcp_ext.h"
 #include "zfcp_qdio.h"
 
@@ -319,8 +320,6 @@ static void zfcp_qdio_setup_init_data(struct qdio_initialize *id,
 	id->input_handler = zfcp_qdio_int_resp;
 	id->output_handler = zfcp_qdio_int_req;
 	id->int_parm = (unsigned long) qdio;
-	id->flags = QDIO_INBOUND_0COPY_SBALS |
-		    QDIO_OUTBOUND_0COPY_SBALS | QDIO_USE_OUTBOUND_PCIS;
 	id->input_sbal_addr_array = (void **) (qdio->resp_q.sbal);
 	id->output_sbal_addr_array = (void **) (qdio->req_q.sbal);
 
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index c3c4178888af..174b6d57d576 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -10,6 +10,7 @@
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
 #include <linux/types.h>
+#include <linux/slab.h>
 #include <scsi/fc/fc_fcp.h>
 #include <asm/atomic.h>
 #include "zfcp_ext.h"
diff --git a/drivers/s390/scsi/zfcp_sysfs.c b/drivers/s390/scsi/zfcp_sysfs.c
index a43035d4bd70..f5f60698dc4c 100644
--- a/drivers/s390/scsi/zfcp_sysfs.c
+++ b/drivers/s390/scsi/zfcp_sysfs.c
@@ -9,6 +9,7 @@
 #define KMSG_COMPONENT "zfcp"
 #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
 
+#include <linux/slab.h>
 #include "zfcp_ext.h"
 
 #define ZFCP_DEV_ATTR(_feat, _name, _mode, _show, _store) \