mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
synced 2024-12-20 21:34:24 -05:00
120 lines
3.9 KiB
Diff
120 lines
3.9 KiB
Diff
From cb0701a2f99fa19f01fbd4249bda9a8eadb0241f Mon Sep 17 00:00:00 2001
|
|
From: kunleiz <kunleiz@codeaurora.org>
|
|
Date: Thu, 22 Dec 2016 18:03:37 +0800
|
|
Subject: ASoC: msm: qdspv2: add mutex lock when access output buffer length
|
|
|
|
Add mutex protection to avoid access output_len in parallel.
|
|
|
|
CRs-Fixed: 1104067
|
|
Change-Id: I4e17258e2abee9cd68152f4b79520b00003aa80d
|
|
Signed-off-by: kunleiz <kunleiz@codeaurora.org>
|
|
---
|
|
drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c | 16 +++++++++++++++-
|
|
1 file changed, 15 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c b/drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c
|
|
index 940fd08..9889d9c 100644
|
|
--- a/drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c
|
|
+++ b/drivers/misc/qcom/qdsp6v2/audio_hwacc_effects.c
|
|
@@ -1,5 +1,5 @@
|
|
/*
|
|
- * Copyright (c) 2014-2016, The Linux Foundation. All rights reserved.
|
|
+ * Copyright (c) 2014-2017, The Linux Foundation. All rights reserved.
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
@@ -29,6 +29,8 @@ struct q6audio_effects {
|
|
struct audio_client *ac;
|
|
struct msm_hwacc_effects_config config;
|
|
|
|
+ struct mutex lock;
|
|
+
|
|
atomic_t in_count;
|
|
atomic_t out_count;
|
|
|
|
@@ -230,8 +232,11 @@ static int audio_effects_shared_ioctl(struct file *file, unsigned cmd,
|
|
uint32_t idx = 0;
|
|
uint32_t size = 0;
|
|
|
|
+ mutex_lock(&effects->lock);
|
|
+
|
|
if (!effects->started) {
|
|
rc = -EFAULT;
|
|
+ mutex_unlock(&effects->lock);
|
|
goto ioctl_fail;
|
|
}
|
|
|
|
@@ -241,11 +246,13 @@ static int audio_effects_shared_ioctl(struct file *file, unsigned cmd,
|
|
if (!rc) {
|
|
pr_err("%s: write wait_event_timeout\n", __func__);
|
|
rc = -EFAULT;
|
|
+ mutex_unlock(&effects->lock);
|
|
goto ioctl_fail;
|
|
}
|
|
if (!atomic_read(&effects->out_count)) {
|
|
pr_err("%s: pcm stopped out_count 0\n", __func__);
|
|
rc = -EFAULT;
|
|
+ mutex_unlock(&effects->lock);
|
|
goto ioctl_fail;
|
|
}
|
|
|
|
@@ -255,6 +262,7 @@ static int audio_effects_shared_ioctl(struct file *file, unsigned cmd,
|
|
copy_from_user(bufptr, (void *)arg,
|
|
effects->config.buf_cfg.output_len)) {
|
|
rc = -EFAULT;
|
|
+ mutex_unlock(&effects->lock);
|
|
goto ioctl_fail;
|
|
}
|
|
rc = q6asm_write(effects->ac,
|
|
@@ -262,6 +270,7 @@ static int audio_effects_shared_ioctl(struct file *file, unsigned cmd,
|
|
0, 0, NO_TIMESTAMP);
|
|
if (rc < 0) {
|
|
rc = -EFAULT;
|
|
+ mutex_unlock(&effects->lock);
|
|
goto ioctl_fail;
|
|
}
|
|
atomic_dec(&effects->out_count);
|
|
@@ -269,6 +278,7 @@ static int audio_effects_shared_ioctl(struct file *file, unsigned cmd,
|
|
pr_err("%s: AUDIO_EFFECTS_WRITE: Buffer dropped\n",
|
|
__func__);
|
|
}
|
|
+ mutex_unlock(&effects->lock);
|
|
break;
|
|
}
|
|
case AUDIO_EFFECTS_READ: {
|
|
@@ -466,6 +476,7 @@ static long audio_effects_ioctl(struct file *file, unsigned int cmd,
|
|
break;
|
|
}
|
|
case AUDIO_EFFECTS_SET_BUF_LEN: {
|
|
+ mutex_lock(&effects->lock);
|
|
if (copy_from_user(&effects->config.buf_cfg, (void *)arg,
|
|
sizeof(effects->config.buf_cfg))) {
|
|
pr_err("%s: copy from user for AUDIO_EFFECTS_SET_BUF_LEN failed\n",
|
|
@@ -475,6 +486,7 @@ static long audio_effects_ioctl(struct file *file, unsigned int cmd,
|
|
pr_debug("%s: write buf len: %d, read buf len: %d\n",
|
|
__func__, effects->config.buf_cfg.output_len,
|
|
effects->config.buf_cfg.input_len);
|
|
+ mutex_unlock(&effects->lock);
|
|
break;
|
|
}
|
|
case AUDIO_EFFECTS_GET_BUF_AVAIL: {
|
|
@@ -719,6 +731,7 @@ static int audio_effects_release(struct inode *inode, struct file *file)
|
|
}
|
|
q6asm_audio_client_free(effects->ac);
|
|
|
|
+ mutex_destroy(&effects->lock);
|
|
kfree(effects);
|
|
|
|
pr_debug("%s: close session success\n", __func__);
|
|
@@ -749,6 +762,7 @@ static int audio_effects_open(struct inode *inode, struct file *file)
|
|
|
|
init_waitqueue_head(&effects->read_wait);
|
|
init_waitqueue_head(&effects->write_wait);
|
|
+ mutex_init(&effects->lock);
|
|
|
|
effects->opened = 0;
|
|
effects->started = 0;
|
|
--
|
|
cgit v1.1
|
|
|