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| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2020-06-29 17:09:11 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-01 15:47:04 +0200 |
| commit | b74a8932dff818f5ff83101c8088a307a8f2eeda (patch) | |
| tree | 32f04bf84caeb3b02ea701af41fb976bbbd95095 /drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | |
| parent | 5a8e22e3d319ddae77c9fcce31ebc40577a32c6a (diff) | |
| download | linux-stable-b74a8932dff818f5ff83101c8088a307a8f2eeda.tar.gz linux-stable-b74a8932dff818f5ff83101c8088a307a8f2eeda.tar.bz2 linux-stable-b74a8932dff818f5ff83101c8088a307a8f2eeda.zip | |
staging: vc04_services: bcm2835-audio: Use vchi_msg_hold()
vchi_msg_dequeue() provides the same functionality as vchi_msg_hold()
except it copies the message data as opposed to the later which provides
the data in place.
The copying is done on a local variable, so there is no need to keep the
message out the function's bounds, so use vchi_msg_hold() instead.
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/20200629150945.10720-14-nsaenzjulienne@suse.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c')
| -rw-r--r-- | drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c index 62eef233275f..5018b5baa009 100644 --- a/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c +++ b/drivers/staging/vc04_services/bcm2835-audio/bcm2835-vchiq.c @@ -94,31 +94,34 @@ static void audio_vchi_callback(void *param, void *msg_handle) { struct bcm2835_audio_instance *instance = param; - struct vc_audio_msg m; - int msg_len; + struct vchi_held_msg handle; + struct vc_audio_msg *m; + unsigned size; int status; if (reason != VCHI_CALLBACK_MSG_AVAILABLE) return; - status = vchi_msg_dequeue(instance->service, - &m, sizeof(m), &msg_len, VCHI_FLAGS_NONE); + status = vchi_msg_hold(instance->service, (void **)&m, &size, + VCHI_FLAGS_NONE, &handle); if (status) return; - if (m.type == VC_AUDIO_MSG_TYPE_RESULT) { - instance->result = m.result.success; + if (m->type == VC_AUDIO_MSG_TYPE_RESULT) { + instance->result = m->result.success; complete(&instance->msg_avail_comp); - } else if (m.type == VC_AUDIO_MSG_TYPE_COMPLETE) { - if (m.complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 || - m.complete.cookie2 != VC_AUDIO_WRITE_COOKIE2) + } else if (m->type == VC_AUDIO_MSG_TYPE_COMPLETE) { + if (m->complete.cookie1 != VC_AUDIO_WRITE_COOKIE1 || + m->complete.cookie2 != VC_AUDIO_WRITE_COOKIE2) dev_err(instance->dev, "invalid cookie\n"); else bcm2835_playback_fifo(instance->alsa_stream, - m.complete.count); + m->complete.count); } else { - dev_err(instance->dev, "unexpected callback type=%d\n", m.type); + dev_err(instance->dev, "unexpected callback type=%d\n", m->type); } + + vchi_held_msg_release(&handle); } static int |