From: Tuomas Tynkkynen tuomas@tuxera.com
[ Upstream commit 678c5b119307c40f9a17152512f9c949d0ec7292 ]
Currently, if bcm2835_audio_open() fails partway, the allocated workqueue is leaked. Avoid that.
While at it, propagate the return value of bcm2835_audio_open_connection() on failure instead of returning -1.
Signed-off-by: Tuomas Tynkkynen tuomas@tuxera.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- .../vc04_services/bcm2835-audio/bcm2835-vchiq.c | 16 ++++++++++------ 1 file changed, 10 insertions(+), 6 deletions(-)
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c index 4be864dbd41c..9eb3b625a1b1 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c @@ -442,16 +442,16 @@ int bcm2835_audio_open(struct bcm2835_alsa_stream *alsa_stream) my_workqueue_init(alsa_stream);
ret = bcm2835_audio_open_connection(alsa_stream); - if (ret) { - ret = -1; - goto exit; - } + if (ret) + goto free_wq; + instance = alsa_stream->instance; LOG_DBG(" instance (%p)\n", instance);
if (mutex_lock_interruptible(&instance->vchi_mutex)) { LOG_DBG("Interrupted whilst waiting for lock on (%d)\n", instance->num_connections); - return -EINTR; + ret = -EINTR; + goto free_wq; } vchi_service_use(instance->vchi_handle[0]);
@@ -474,7 +474,11 @@ int bcm2835_audio_open(struct bcm2835_alsa_stream *alsa_stream) unlock: vchi_service_release(instance->vchi_handle[0]); mutex_unlock(&instance->vchi_mutex); -exit: + +free_wq: + if (ret) + destroy_workqueue(alsa_stream->my_wq); + return ret; }