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-rw-r--r--drivers/s390/cio/css.c13
-rw-r--r--drivers/s390/cio/css.h2
-rw-r--r--drivers/s390/cio/device.c107
-rw-r--r--drivers/s390/cio/device_fsm.c3
4 files changed, 78 insertions, 47 deletions
diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c
index 26cf2f5ae2e7..55895c83d499 100644
--- a/drivers/s390/cio/css.c
+++ b/drivers/s390/cio/css.c
@@ -135,14 +135,19 @@ css_register_subchannel(struct subchannel *sch)
sch->dev.parent = &css[0]->device;
sch->dev.bus = &css_bus_type;
sch->dev.release = &css_subchannel_release;
-
+
/* make it known to the system */
ret = css_sch_device_register(sch);
- if (ret)
+ if (ret) {
printk (KERN_WARNING "%s: could not register %s\n",
__func__, sch->dev.bus_id);
- else
- css_get_ssd_info(sch);
+ return ret;
+ }
+ css_get_ssd_info(sch);
+ ret = subchannel_add_files(&sch->dev);
+ if (ret)
+ printk(KERN_WARNING "%s: could not add attributes to %s\n",
+ __func__, sch->dev.bus_id);
return ret;
}
diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h
index dfd5462f993f..ac845c1ebf83 100644
--- a/drivers/s390/cio/css.h
+++ b/drivers/s390/cio/css.h
@@ -189,4 +189,6 @@ extern int need_rescan;
extern struct workqueue_struct *slow_path_wq;
extern struct work_struct slow_path_work;
+
+int subchannel_add_files (struct device *);
#endif
diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c
index 0f604621de40..e644fd6905ee 100644
--- a/drivers/s390/cio/device.c
+++ b/drivers/s390/cio/device.c
@@ -294,6 +294,18 @@ online_show (struct device *dev, struct device_attribute *attr, char *buf)
return sprintf(buf, cdev->online ? "1\n" : "0\n");
}
+static void ccw_device_unregister(struct work_struct *work)
+{
+ struct ccw_device_private *priv;
+ struct ccw_device *cdev;
+
+ priv = container_of(work, struct ccw_device_private, kick_work);
+ cdev = priv->cdev;
+ if (test_and_clear_bit(1, &cdev->private->registered))
+ device_unregister(&cdev->dev);
+ put_device(&cdev->dev);
+}
+
static void
ccw_device_remove_disconnected(struct ccw_device *cdev)
{
@@ -498,8 +510,7 @@ static struct attribute_group subch_attr_group = {
.attrs = subch_attrs,
};
-static inline int
-subchannel_add_files (struct device *dev)
+int subchannel_add_files (struct device *dev)
{
return sysfs_create_group(&dev->kobj, &subch_attr_group);
}
@@ -676,6 +687,55 @@ ccw_device_release(struct device *dev)
kfree(cdev);
}
+static struct ccw_device * io_subchannel_allocate_dev(struct subchannel *sch)
+{
+ struct ccw_device *cdev;
+
+ cdev = kzalloc(sizeof(*cdev), GFP_KERNEL);
+ if (cdev) {
+ cdev->private = kzalloc(sizeof(struct ccw_device_private),
+ GFP_KERNEL | GFP_DMA);
+ if (cdev->private)
+ return cdev;
+ }
+ kfree(cdev);
+ return ERR_PTR(-ENOMEM);
+}
+
+static int io_subchannel_initialize_dev(struct subchannel *sch,
+ struct ccw_device *cdev)
+{
+ cdev->private->cdev = cdev;
+ atomic_set(&cdev->private->onoff, 0);
+ cdev->dev.parent = &sch->dev;
+ cdev->dev.release = ccw_device_release;
+ INIT_LIST_HEAD(&cdev->private->kick_work.entry);
+ /* Do first half of device_register. */
+ device_initialize(&cdev->dev);
+ if (!get_device(&sch->dev)) {
+ if (cdev->dev.release)
+ cdev->dev.release(&cdev->dev);
+ return -ENODEV;
+ }
+ return 0;
+}
+
+static struct ccw_device * io_subchannel_create_ccwdev(struct subchannel *sch)
+{
+ struct ccw_device *cdev;
+ int ret;
+
+ cdev = io_subchannel_allocate_dev(sch);
+ if (!IS_ERR(cdev)) {
+ ret = io_subchannel_initialize_dev(sch, cdev);
+ if (ret) {
+ kfree(cdev);
+ cdev = ERR_PTR(ret);
+ }
+ }
+ return cdev;
+}
+
/*
* Register recognized device.
*/
@@ -724,11 +784,6 @@ io_subchannel_register(struct work_struct *work)
wake_up(&ccw_device_init_wq);
return;
}
-
- ret = subchannel_add_files(cdev->dev.parent);
- if (ret)
- printk(KERN_WARNING "%s: could not add attributes to %s\n",
- __func__, sch->dev.bus_id);
put_device(&cdev->dev);
out:
cdev->private->flags.recog_done = 1;
@@ -851,7 +906,6 @@ io_subchannel_probe (struct subchannel *sch)
cdev = sch->dev.driver_data;
device_initialize(&cdev->dev);
ccw_device_register(cdev);
- subchannel_add_files(&sch->dev);
/*
* Check if the device is already online. If it is
* the reference count needs to be corrected
@@ -864,28 +918,9 @@ io_subchannel_probe (struct subchannel *sch)
get_device(&cdev->dev);
return 0;
}
- cdev = kzalloc (sizeof(*cdev), GFP_KERNEL);
- if (!cdev)
- return -ENOMEM;
- cdev->private = kzalloc(sizeof(struct ccw_device_private),
- GFP_KERNEL | GFP_DMA);
- if (!cdev->private) {
- kfree(cdev);
- return -ENOMEM;
- }
- cdev->private->cdev = cdev;
- atomic_set(&cdev->private->onoff, 0);
- cdev->dev.parent = &sch->dev;
- cdev->dev.release = ccw_device_release;
- INIT_LIST_HEAD(&cdev->private->kick_work.entry);
- /* Do first half of device_register. */
- device_initialize(&cdev->dev);
-
- if (!get_device(&sch->dev)) {
- if (cdev->dev.release)
- cdev->dev.release(&cdev->dev);
- return -ENODEV;
- }
+ cdev = io_subchannel_create_ccwdev(sch);
+ if (IS_ERR(cdev))
+ return PTR_ERR(cdev);
rc = io_subchannel_recog(cdev, sch);
if (rc) {
@@ -899,18 +934,6 @@ io_subchannel_probe (struct subchannel *sch)
return rc;
}
-static void ccw_device_unregister(struct work_struct *work)
-{
- struct ccw_device_private *priv;
- struct ccw_device *cdev;
-
- priv = container_of(work, struct ccw_device_private, kick_work);
- cdev = priv->cdev;
- if (test_and_clear_bit(1, &cdev->private->registered))
- device_unregister(&cdev->dev);
- put_device(&cdev->dev);
-}
-
static int
io_subchannel_remove (struct subchannel *sch)
{
diff --git a/drivers/s390/cio/device_fsm.c b/drivers/s390/cio/device_fsm.c
index 0f0301ce37fe..a487fb0e7d3d 100644
--- a/drivers/s390/cio/device_fsm.c
+++ b/drivers/s390/cio/device_fsm.c
@@ -1106,7 +1106,8 @@ device_trigger_reprobe(struct subchannel *sch)
/* Update some values. */
if (stsch(sch->schid, &sch->schib))
return;
-
+ if (!sch->schib.pmcw.dnv)
+ return;
/*
* The pim, pam, pom values may not be accurate, but they are the best
* we have before performing device selection :/
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-14 02:31:47 +0000