wl12xx: Power off after flushing work
When stopping plt, the chip is powered off before all current work items
are flushed and interrupts are disabled. This might introduce a race in
which the driver tries to communicate with a powered off chip.
Fix this by powering off the device only after interrupts are disabled
and all work items are flushed.
Signed-off-by: Ido Yariv <ido@wizery.com>
Signed-off-by: Luciano Coelho <coelho@ti.com>
diff --git a/drivers/net/wireless/wl12xx/main.c b/drivers/net/wireless/wl12xx/main.c
index ac68664..9e9fb3f 100644
--- a/drivers/net/wireless/wl12xx/main.c
+++ b/drivers/net/wireless/wl12xx/main.c
@@ -1406,8 +1406,6 @@
goto out;
}
- wl1271_power_off(wl);
-
wl->state = WL1271_STATE_OFF;
wl->rx_counter = 0;
@@ -1417,6 +1415,11 @@
wl1271_flush_deferred_work(wl);
cancel_work_sync(&wl->netstack_work);
cancel_work_sync(&wl->recovery_work);
+
+ mutex_lock(&wl->mutex);
+ wl1271_power_off(wl);
+ mutex_unlock(&wl->mutex);
+
out:
return ret;
}