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| author | Amitkumar Karwar <akarwar@marvell.com> | 2015-01-01 00:13:39 -0800 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-01-06 16:19:35 +0100 |
| commit | 8b324fa6915bf4ad7d28e58a5a004f16e470e58d (patch) | |
| tree | 44f0802f8ecc5397d4462065357cb06be6e63630 /drivers/bluetooth/btmrvl_main.c | |
| parent | 661cf88acd84875c275820ed01e42b25c4e9a1e2 (diff) | |
| download | blackbird-op-linux-8b324fa6915bf4ad7d28e58a5a004f16e470e58d.tar.gz blackbird-op-linux-8b324fa6915bf4ad7d28e58a5a004f16e470e58d.zip | |
Bluetooth: btmrvl: fix race issue while stopping main thread
btmrvl_remove_card() calls kthread_stop() to stop the main thread,
but kthread_should_stop() is checked when all the activities are done
in the main thread before sleeping.
We will have kthread_should_stop() check as soon as main thread is
woken up. This fixes a crash issue caused due to an invalid memory
access while unnecessarily processing interrupts after card removal.
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'drivers/bluetooth/btmrvl_main.c')
| -rw-r--r-- | drivers/bluetooth/btmrvl_main.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index 30939c993d94..e3f5711c6690 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -616,6 +616,11 @@ static int btmrvl_service_main_thread(void *data) BT_DBG("main_thread woke up"); + if (kthread_should_stop()) { + BT_DBG("main_thread: break from main thread"); + break; + } + spin_lock_irqsave(&priv->driver_lock, flags); if (adapter->int_count) { adapter->int_count = 0; |
