From: Nishanth Aravamudan <nacc@xxxxxxxxxx>
Description: Replace schedule_timeout() with
msleep()/msleep_interruptible() as appropriate, to guarantee the task
delays as expected.
Patch is compile-tested.
Signed-off-by: Nishanth Aravamudan <nacc@xxxxxxxxxx>
---
qla_os.c | 25 +++++++++++--------------
1 files changed, 11 insertions(+), 14 deletions(-)
diff -urp 2.6.13-rc2-kj/drivers/scsi/qla2xxx/qla_os.c 2.6.13-rc2-kj-dev/drivers/scsi/qla2xxx/qla_os.c
--- 2.6.13-rc2-kj/drivers/scsi/qla2xxx/qla_os.c 2005-07-08 13:01:12.000000000 -0700
+++ 2.6.13-rc2-kj-dev/drivers/scsi/qla2xxx/qla_os.c 2005-07-06 19:27:01.000000000 -0700
@@ -347,14 +347,13 @@ qc_fail_command:
static int
qla2x00_eh_wait_on_command(scsi_qla_host_t *ha, struct scsi_cmnd *cmd)
{
-#define ABORT_POLLING_PERIOD HZ
-#define ABORT_WAIT_ITER ((10 * HZ) / (ABORT_POLLING_PERIOD))
+#define ABORT_POLLING_PERIOD 1000
+#define ABORT_WAIT_ITER ((10 * 1000) / (ABORT_POLLING_PERIOD))
unsigned long wait_iter = ABORT_WAIT_ITER;
int ret = QLA_SUCCESS;
while (CMD_SP(cmd)) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(ABORT_POLLING_PERIOD);
+ msleep(ABORT_POLLING_PERIOD);
if (--wait_iter)
break;
@@ -1693,7 +1692,7 @@ qla2x00_mem_free(scsi_qla_host_t *ha)
{
struct list_head *fcpl, *fcptemp;
fc_port_t *fcport;
- unsigned long wtime;/* max wait time if mbx cmd is busy. */
+ unsigned int wtime;/* max wait time if mbx cmd is busy. */
if (ha == NULL) {
/* error */
@@ -1702,11 +1701,9 @@ qla2x00_mem_free(scsi_qla_host_t *ha)
}
/* Make sure all other threads are stopped. */
- wtime = 60 * HZ;
- while (ha->dpc_wait && wtime) {
- set_current_state(TASK_INTERRUPTIBLE);
- wtime = schedule_timeout(wtime);
- }
+ wtime = 60 * 1000;
+ while (ha->dpc_wait && wtime)
+ wtime = msleep_interruptible(wtime);
/* free ioctl memory */
qla2x00_free_ioctl_mem(ha);
@@ -2250,15 +2247,15 @@ qla2x00_timer(scsi_qla_host_t *ha)
int
qla2x00_down_timeout(struct semaphore *sema, unsigned long timeout)
{
- const unsigned int step = HZ/10;
+ const unsigned int step = 100; /* msecs */
+ unsigned int iterations = jiffies_to_msecs(timeout)/100;
do {
if (!down_trylock(sema))
return 0;
- set_current_state(TASK_INTERRUPTIBLE);
- if (schedule_timeout(step))
+ if (msleep_interruptible(step))
break;
- } while ((timeout -= step) > 0);
+ } while (--iterations >= 0);
return -ETIMEDOUT;
}
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