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authorJan Glauber <jang@linux.vnet.ibm.com>2009-04-14 15:36:22 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-04-14 15:37:24 +0200
commit75cb71f3184f3dd5b78d991d5e0e047774865f5d (patch)
treed58ce30b5466e9b36433ffcc886ad383fcbadafb
parent43ae8a1b32735c662ba7ebf3509c4f670f75e3d5 (diff)
[S390] qdio: remove dead timeout handler
The QDIO ccw devices are started by ccw_device_start so no timeout can occur for the interrupt handler. Remove the dead code. In case of an I/O error set the device state to error and wake up a possibly running qdio_shutdown waiter. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--drivers/s390/cio/qdio_main.c43
1 files changed, 2 insertions, 41 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 9e8a2914259..accd957454e 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -881,42 +881,6 @@ no_handler:
qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
}
-static void qdio_call_shutdown(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;
- qdio_shutdown(cdev, QDIO_FLAG_CLEANUP_USING_CLEAR);
- put_device(&cdev->dev);
-}
-
-static void qdio_int_error(struct ccw_device *cdev)
-{
- struct qdio_irq *irq_ptr = cdev->private->qdio_data;
-
- switch (irq_ptr->state) {
- case QDIO_IRQ_STATE_INACTIVE:
- case QDIO_IRQ_STATE_CLEANUP:
- qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
- break;
- case QDIO_IRQ_STATE_ESTABLISHED:
- case QDIO_IRQ_STATE_ACTIVE:
- qdio_set_state(irq_ptr, QDIO_IRQ_STATE_STOPPED);
- if (get_device(&cdev->dev)) {
- /* Can't call shutdown from interrupt context. */
- PREPARE_WORK(&cdev->private->kick_work,
- qdio_call_shutdown);
- queue_work(ccw_device_work, &cdev->private->kick_work);
- }
- break;
- default:
- WARN_ON(1);
- }
- wake_up(&cdev->private->wait_q);
-}
-
static int qdio_establish_check_errors(struct ccw_device *cdev, int cstat,
int dstat)
{
@@ -973,10 +937,8 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
switch (PTR_ERR(irb)) {
case -EIO:
DBF_ERROR("%4x IO error", irq_ptr->schid.sch_no);
- return;
- case -ETIMEDOUT:
- DBF_ERROR("%4x IO timeout", irq_ptr->schid.sch_no);
- qdio_int_error(cdev);
+ qdio_set_state(irq_ptr, QDIO_IRQ_STATE_ERR);
+ wake_up(&cdev->private->wait_q);
return;
default:
WARN_ON(1);
@@ -1001,7 +963,6 @@ void qdio_int_handler(struct ccw_device *cdev, unsigned long intparm,
case QDIO_IRQ_STATE_ACTIVE:
if (cstat & SCHN_STAT_PCI) {
qdio_int_handler_pci(irq_ptr);
- /* no state change so no need to wake up wait_q */
return;
}
if ((cstat & ~SCHN_STAT_PCI) || dstat) {