diff options
| author | Lior David <qca_liord@qca.qualcomm.com> | 2016-11-23 14:06:41 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-08-07 01:59:42 (GMT) |
| commit | 2f16bcd4dba9980a1d237b0fa0c697aa7547c2d6 (patch) | |
| tree | b63576fde930035f94bc5550998c9a951262c70f /drivers/net | |
| parent | 59153e6589366f09eb42b92c8bc8c2fce72fe8fe (diff) | |
| download | linux-2f16bcd4dba9980a1d237b0fa0c697aa7547c2d6.tar.xz | |
wil6210: fix deadlock when using fw_no_recovery option
commit dfb5b098e0f40b68aa07f2ec55f4dd762efefbfa upstream.
When FW crashes with no_fw_recovery option, driver
waits for manual recovery with wil->mutex held, this
can easily create deadlocks.
Fix the problem by moving the wait outside the lock.
Signed-off-by: Lior David <qca_liord@qca.qualcomm.com>
Signed-off-by: Maya Erez <qca_merez@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/wireless/ath/wil6210/main.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/net/wireless/ath/wil6210/main.c b/drivers/net/wireless/ath/wil6210/main.c index e7130b5..24b07a0 100644 --- a/drivers/net/wireless/ath/wil6210/main.c +++ b/drivers/net/wireless/ath/wil6210/main.c @@ -384,18 +384,19 @@ static void wil_fw_error_worker(struct work_struct *work) wil->last_fw_recovery = jiffies; + wil_info(wil, "fw error recovery requested (try %d)...\n", + wil->recovery_count); + if (!no_fw_recovery) + wil->recovery_state = fw_recovery_running; + if (wil_wait_for_recovery(wil) != 0) + return; + mutex_lock(&wil->mutex); switch (wdev->iftype) { case NL80211_IFTYPE_STATION: case NL80211_IFTYPE_P2P_CLIENT: case NL80211_IFTYPE_MONITOR: - wil_info(wil, "fw error recovery requested (try %d)...\n", - wil->recovery_count); - if (!no_fw_recovery) - wil->recovery_state = fw_recovery_running; - if (0 != wil_wait_for_recovery(wil)) - break; - + /* silent recovery, upper layers will see disconnect */ __wil_down(wil); __wil_up(wil); break; |