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From f491fbf4315a1d4a7210450f835a6fe93880cd5b Mon Sep 17 00:00:00 2001
From: popcornmix <popcornmix@gmail.com>
Date: Fri, 12 Aug 2016 15:46:21 +0100
Subject: [PATCH] snd-bcm2835: Don't allow responses from VC to be interrupted
by user signals
There should always be a response, and retry after a signal interruption is not handled, so don't report
we are interruptible.
See: https://github.com/raspberrypi/linux/issues/1560
---
sound/arm/bcm2835-vchiq.c | 25 ++++++-------------------
1 file changed, 6 insertions(+), 19 deletions(-)
--- a/sound/arm/bcm2835-vchiq.c
+++ b/sound/arm/bcm2835-vchiq.c
@@ -511,12 +511,7 @@ static int bcm2835_audio_set_ctls_chan(b
}
/* We are expecting a reply from the videocore */
- ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
- if (ret) {
- LOG_DBG("%s: failed on waiting for event (status=%d)\n",
- __func__, success);
- goto unlock;
- }
+ wait_for_completion(&instance->msg_avail_comp);
if (instance->result != 0) {
LOG_ERR("%s: result=%d\n", __func__, instance->result);
@@ -615,12 +610,7 @@ int bcm2835_audio_set_params(bcm2835_als
}
/* We are expecting a reply from the videocore */
- ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
- if (ret) {
- LOG_DBG("%s: failed on waiting for event (status=%d)\n",
- __func__, success);
- goto unlock;
- }
+ wait_for_completion(&instance->msg_avail_comp);
if (instance->result != 0) {
LOG_ERR("%s: result=%d", __func__, instance->result);
@@ -761,14 +751,11 @@ int bcm2835_audio_close(bcm2835_alsa_str
goto unlock;
}
- ret = wait_for_completion_interruptible(&instance->msg_avail_comp);
- if (ret) {
- LOG_DBG("%s: failed on waiting for event (status=%d)\n",
- __func__, success);
- goto unlock;
- }
+ /* We are expecting a reply from the videocore */
+ wait_for_completion(&instance->msg_avail_comp);
+
if (instance->result != 0) {
- LOG_ERR("%s: failed result (status=%d)\n",
+ LOG_ERR("%s: failed result (result=%d)\n",
__func__, instance->result);
ret = -1;
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