From 9c969d8ccb1e17bd20742f4ac9f00c1a64487234 Mon Sep 17 00:00:00 2001 From: Bing Zhao Date: Wed, 2 Jan 2013 16:07:35 -0800 Subject: [PATCH] mwifiex: check wait_event_interruptible return value wait_event_interruptible function returns -ERESTARTSYS if it's interrupted by a signal. Driver should check the return value and handle this case properly. In mwifiex_wait_queue_complete() routine, as we are now checking wait_event_interruptible return value, the condition check is not required. Also, we have removed mwifiex_cancel_pending_ioctl() call to avoid a chance of sending second command to FW by other path as soon as we clear current command node. FW can not handle two commands simultaneously. Cc: "3.6+" Signed-off-by: Bing Zhao Signed-off-by: Amitkumar Karwar Signed-off-by: John W. Linville --- drivers/net/wireless/mwifiex/sta_ioctl.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/drivers/net/wireless/mwifiex/sta_ioctl.c b/drivers/net/wireless/mwifiex/sta_ioctl.c index cb682561c438..60e88b58039d 100644 --- a/drivers/net/wireless/mwifiex/sta_ioctl.c +++ b/drivers/net/wireless/mwifiex/sta_ioctl.c @@ -56,7 +56,6 @@ int mwifiex_copy_mcast_addr(struct mwifiex_multicast_list *mlist, */ int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter) { - bool cancel_flag = false; int status; struct cmd_ctrl_node *cmd_queued; @@ -70,14 +69,11 @@ int mwifiex_wait_queue_complete(struct mwifiex_adapter *adapter) atomic_inc(&adapter->cmd_pending); /* Wait for completion */ - wait_event_interruptible(adapter->cmd_wait_q.wait, - *(cmd_queued->condition)); - if (!*(cmd_queued->condition)) - cancel_flag = true; - - if (cancel_flag) { - mwifiex_cancel_pending_ioctl(adapter); - dev_dbg(adapter->dev, "cmd cancel\n"); + status = wait_event_interruptible(adapter->cmd_wait_q.wait, + *(cmd_queued->condition)); + if (status) { + dev_err(adapter->dev, "cmd_wait_q terminated: %d\n", status); + return status; } status = adapter->cmd_wait_q.status; @@ -496,8 +492,11 @@ int mwifiex_enable_hs(struct mwifiex_adapter *adapter) return false; } - wait_event_interruptible(adapter->hs_activate_wait_q, - adapter->hs_activate_wait_q_woken); + if (wait_event_interruptible(adapter->hs_activate_wait_q, + adapter->hs_activate_wait_q_woken)) { + dev_err(adapter->dev, "hs_activate_wait_q terminated\n"); + return false; + } return true; } -- 2.34.1