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staging: bcm2835-audio: Need to judge the return value of vchi_msg_dequeue in audio_vchi_callback

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If vchi_msg_dequeue return -1, variable m is not assigined,
need to return.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/1570520515-2186-2-git-send-email-zhengbin13@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
zhengbin 2019-10-08 15:41:50 +08:00 committed by Greg Kroah-Hartman
parent 17a29fea08
commit 5193dbdaf0
1 changed files with 3 additions and 0 deletions
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3
drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c
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@ -103,6 +103,9 @@ static void audio_vchi_callback(void *param,
status = vchi_msg_dequeue(instance->vchi_handle,
&m, sizeof(m), &msg_len, VCHI_FLAGS_NONE);
if (status)
return;
if (m.type == VC_AUDIO_MSG_TYPE_RESULT) {
instance->result = m.result.success;
complete(&instance->msg_avail_comp);