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staging: bcm2835-audio: Don't leak workqueue if open fails

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[ Upstream commit 678c5b1193 ]

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tuomas Tynkkynen
2018-07-13 00:54:17 +03:00
committed by Greg Kroah-Hartman
parent 8e3015e873
commit 34240e87d2
1 changed files with 10 additions and 6 deletions
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16
drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
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@@ -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;
}