diff options
| author |   zhengbin <zhengbin13@huawei.com> | 2019-10-08 15:41:50 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-08 14:52:55 +0200 |
| commit | 5193dbdaf0b07a46b6659c7a38c80c947f7ab732 (patch) | |
| tree | ab2f43d3729dd12c12b333f29ec6efe34f4303a7 /drivers/staging/vc04_services | |
| parent | staging/octeon: Use stubs for MIPS && !CAVIUM_OCTEON_SOC (diff) | |
| download | wireguard-linux-5193dbdaf0b07a46b6659c7a38c80c947f7ab732.tar.xz wireguard-linux-5193dbdaf0b07a46b6659c7a38c80c947f7ab732.zip | |
staging: bcm2835-audio: Need to judge the return value of vchi_msg_dequeue in audio_vchi_callback
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>
Diffstat (limited to 'drivers/staging/vc04_services')
| -rw-r--r-- | drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c index 23fba01107b9..6780b3ff4fbb 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c @@ -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); |