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Diffstat (limited to 'drivers/s390/block')
-rw-r--r--drivers/s390/block/dasd.c33
-rw-r--r--drivers/s390/block/dasd_devmap.c10
-rw-r--r--drivers/s390/block/dasd_int.h2
3 files changed, 23 insertions, 22 deletions
diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index ac6d4d3218b3..1a4025683362 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -63,6 +63,7 @@ static void dasd_return_cqr_cb(struct dasd_ccw_req *, void *);
*/
static wait_queue_head_t dasd_init_waitq;
static wait_queue_head_t dasd_flush_wq;
+static wait_queue_head_t generic_waitq;
/*
* Allocate memory for a new device structure.
@@ -925,6 +926,8 @@ static void dasd_handle_killed_request(struct ccw_device *cdev,
struct dasd_ccw_req *cqr;
struct dasd_device *device;
+ if (!intparm)
+ return;
cqr = (struct dasd_ccw_req *) intparm;
if (cqr->status != DASD_CQR_IN_IO) {
MESSAGE(KERN_DEBUG,
@@ -976,17 +979,16 @@ void dasd_int_handler(struct ccw_device *cdev, unsigned long intparm,
if (IS_ERR(irb)) {
switch (PTR_ERR(irb)) {
case -EIO:
- dasd_handle_killed_request(cdev, intparm);
break;
case -ETIMEDOUT:
printk(KERN_WARNING"%s(%s): request timed out\n",
__func__, cdev->dev.bus_id);
- //FIXME - dasd uses own timeout interface...
break;
default:
printk(KERN_WARNING"%s(%s): unknown error %ld\n",
__func__, cdev->dev.bus_id, PTR_ERR(irb));
}
+ dasd_handle_killed_request(cdev, intparm);
return;
}
@@ -1150,11 +1152,15 @@ static void __dasd_device_process_final_queue(struct dasd_device *device,
struct list_head *l, *n;
struct dasd_ccw_req *cqr;
struct dasd_block *block;
+ void (*callback)(struct dasd_ccw_req *, void *data);
+ void *callback_data;
list_for_each_safe(l, n, final_queue) {
cqr = list_entry(l, struct dasd_ccw_req, devlist);
list_del_init(&cqr->devlist);
block = cqr->block;
+ callback = cqr->callback;
+ callback_data = cqr->callback_data;
if (block)
spin_lock_bh(&block->queue_lock);
switch (cqr->status) {
@@ -1175,7 +1181,7 @@ static void __dasd_device_process_final_queue(struct dasd_device *device,
BUG();
}
if (cqr->callback != NULL)
- (cqr->callback)(cqr, cqr->callback_data);
+ (callback)(cqr, callback_data);
if (block)
spin_unlock_bh(&block->queue_lock);
}
@@ -1405,17 +1411,15 @@ static inline int _wait_for_wakeup(struct dasd_ccw_req *cqr)
*/
int dasd_sleep_on(struct dasd_ccw_req *cqr)
{
- wait_queue_head_t wait_q;
struct dasd_device *device;
int rc;
device = cqr->startdev;
- init_waitqueue_head (&wait_q);
cqr->callback = dasd_wakeup_cb;
- cqr->callback_data = (void *) &wait_q;
+ cqr->callback_data = (void *) &generic_waitq;
dasd_add_request_tail(cqr);
- wait_event(wait_q, _wait_for_wakeup(cqr));
+ wait_event(generic_waitq, _wait_for_wakeup(cqr));
/* Request status is either done or failed. */
rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
@@ -1428,20 +1432,18 @@ int dasd_sleep_on(struct dasd_ccw_req *cqr)
*/
int dasd_sleep_on_interruptible(struct dasd_ccw_req *cqr)
{
- wait_queue_head_t wait_q;
struct dasd_device *device;
int rc;
device = cqr->startdev;
- init_waitqueue_head (&wait_q);
cqr->callback = dasd_wakeup_cb;
- cqr->callback_data = (void *) &wait_q;
+ cqr->callback_data = (void *) &generic_waitq;
dasd_add_request_tail(cqr);
- rc = wait_event_interruptible(wait_q, _wait_for_wakeup(cqr));
+ rc = wait_event_interruptible(generic_waitq, _wait_for_wakeup(cqr));
if (rc == -ERESTARTSYS) {
dasd_cancel_req(cqr);
/* wait (non-interruptible) for final status */
- wait_event(wait_q, _wait_for_wakeup(cqr));
+ wait_event(generic_waitq, _wait_for_wakeup(cqr));
}
rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
return rc;
@@ -1465,7 +1467,6 @@ static inline int _dasd_term_running_cqr(struct dasd_device *device)
int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
{
- wait_queue_head_t wait_q;
struct dasd_device *device;
int rc;
@@ -1477,9 +1478,8 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
return rc;
}
- init_waitqueue_head (&wait_q);
cqr->callback = dasd_wakeup_cb;
- cqr->callback_data = (void *) &wait_q;
+ cqr->callback_data = (void *) &generic_waitq;
cqr->status = DASD_CQR_QUEUED;
list_add(&cqr->devlist, &device->ccw_queue);
@@ -1488,7 +1488,7 @@ int dasd_sleep_on_immediatly(struct dasd_ccw_req *cqr)
spin_unlock_irq(get_ccwdev_lock(device->cdev));
- wait_event(wait_q, _wait_for_wakeup(cqr));
+ wait_event(generic_waitq, _wait_for_wakeup(cqr));
/* Request status is either done or failed. */
rc = (cqr->status == DASD_CQR_DONE) ? 0 : -EIO;
@@ -2429,6 +2429,7 @@ static int __init dasd_init(void)
init_waitqueue_head(&dasd_init_waitq);
init_waitqueue_head(&dasd_flush_wq);
+ init_waitqueue_head(&generic_waitq);
/* register 'common' DASD debug area, used for all DBF_XXX calls */
dasd_debug_area = debug_register("dasd", 1, 1, 8 * sizeof(long));
diff --git a/drivers/s390/block/dasd_devmap.c b/drivers/s390/block/dasd_devmap.c
index f4fb40257348..d774e79476fe 100644
--- a/drivers/s390/block/dasd_devmap.c
+++ b/drivers/s390/block/dasd_devmap.c
@@ -86,10 +86,10 @@ static DEFINE_SPINLOCK(dasd_devmap_lock);
static struct list_head dasd_hashlists[256];
int dasd_max_devindex;
-static struct dasd_devmap *dasd_add_busid(char *, int);
+static struct dasd_devmap *dasd_add_busid(const char *, int);
static inline int
-dasd_hash_busid(char *bus_id)
+dasd_hash_busid(const char *bus_id)
{
int hash, i;
@@ -394,7 +394,7 @@ dasd_parse(void)
* devices.
*/
static struct dasd_devmap *
-dasd_add_busid(char *bus_id, int features)
+dasd_add_busid(const char *bus_id, int features)
{
struct dasd_devmap *devmap, *new, *tmp;
int hash;
@@ -430,7 +430,7 @@ dasd_add_busid(char *bus_id, int features)
* Find devmap for device with given bus_id.
*/
static struct dasd_devmap *
-dasd_find_busid(char *bus_id)
+dasd_find_busid(const char *bus_id)
{
struct dasd_devmap *devmap, *tmp;
int hash;
@@ -452,7 +452,7 @@ dasd_find_busid(char *bus_id)
* Check if busid has been added to the list of dasd ranges.
*/
int
-dasd_busid_known(char *bus_id)
+dasd_busid_known(const char *bus_id)
{
return IS_ERR(dasd_find_busid(bus_id)) ? -ENOENT : 0;
}
diff --git a/drivers/s390/block/dasd_int.h b/drivers/s390/block/dasd_int.h
index 6c624bf44617..fb2f931cf844 100644
--- a/drivers/s390/block/dasd_int.h
+++ b/drivers/s390/block/dasd_int.h
@@ -598,7 +598,7 @@ struct dasd_device *dasd_device_from_cdev_locked(struct ccw_device *);
struct dasd_device *dasd_device_from_devindex(int);
int dasd_parse(void);
-int dasd_busid_known(char *);
+int dasd_busid_known(const char *);
/* externals in dasd_gendisk.c */
int dasd_gendisk_init(void);
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-01 05:34:53 +0000