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mwifiex: fix hung task on command timeout 

Sometimes when command timeout occurs due to a firmware or
hardware bug, there may be some synchronous commands in command
queue. These commands are never downloaded to firmware causing
hung task warnings. This patch replaces wait_event_interruptible
call with wait_event_interruptible_timeout to fix the issue.

Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Amitkumar Karwar 2014-04-14 15:31:06 -07:00 committed by John W. Linville
parent 20474129d8
commit f8d2b9209a
1 changed files with 4 additions and 3 deletions
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7
drivers/net/wireless/mwifiex/sta_ioctl.c
View File

@ -60,9 +60,10 @@ int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter,
int status;
/* Wait for completion */
status = wait_event_interruptible(adapter->cmd_wait_q.wait,
*(cmd_queued->condition));
if (status) {
status = wait_event_interruptible_timeout(adapter->cmd_wait_q.wait,
*(cmd_queued->condition),
(12 * HZ));
if (status <= 0) {
dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status);
mwifiex_cancel_all_pending_cmd(adapter);
return status;