92 lines
2.2 KiB
Diff
92 lines
2.2 KiB
Diff
|
From 2f2601bbafb130f3735b12e3ccd5ba2410a0cb05 Mon Sep 17 00:00:00 2001
|
||
|
|
From: yangqiang <yangqiang1@eswincomputing.com>
|
||
|
|
Date: Fri, 8 Nov 2024 14:56:51 +0800
|
||
|
|
Subject: [PATCH 212/219] feat:add audio proc mutex.
|
||
|
|
|
||
|
|
Changelogs:
|
||
|
|
add audio proc mutex.
|
||
|
|
|
||
|
|
Signed-off-by: yangqiang <yangqiang1@eswincomputing.com>
|
||
|
|
---
|
||
|
|
sound/soc/eswin/esw-audio-proc.c | 17 ++++++++++++++---
|
||
|
|
1 file changed, 14 insertions(+), 3 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/sound/soc/eswin/esw-audio-proc.c b/sound/soc/eswin/esw-audio-proc.c
|
||
|
|
index f0c0cbe10f56..83c3bbb26c73 100644
|
||
|
|
--- a/sound/soc/eswin/esw-audio-proc.c
|
||
|
|
+++ b/sound/soc/eswin/esw-audio-proc.c
|
||
|
|
@@ -27,6 +27,7 @@
|
||
|
|
#include <linux/eventfd.h>
|
||
|
|
#include <linux/ioctl.h>
|
||
|
|
#include <linux/device.h>
|
||
|
|
+#include <linux/mutex.h>
|
||
|
|
|
||
|
|
// proc data definition
|
||
|
|
typedef enum
|
||
|
|
@@ -79,6 +80,7 @@ static int audio_proc_major[NUM_DEVICES] = {0};
|
||
|
|
static struct class *audio_proc_class = NULL;
|
||
|
|
static struct device *audio_proc_device[NUM_DEVICES] = {NULL};
|
||
|
|
static int32_t *g_perf_data[NUM_DEVICES] = {NULL};
|
||
|
|
+static DEFINE_MUTEX(audio_proc_lock);
|
||
|
|
|
||
|
|
static void show_aenc_data(struct seq_file *m)
|
||
|
|
{
|
||
|
|
@@ -393,14 +395,16 @@ int audio_proc_module_init(void)
|
||
|
|
int i, ret;
|
||
|
|
struct device *dev;
|
||
|
|
|
||
|
|
+ mutex_lock(&audio_proc_lock);
|
||
|
|
+
|
||
|
|
if (g_proc_initialized) {
|
||
|
|
+ mutex_unlock(&audio_proc_lock);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
- pr_info("audio_proc_module_init enter.\n");
|
||
|
|
-
|
||
|
|
audio_proc_class = class_create("audio_proc_class");
|
||
|
|
if (IS_ERR(audio_proc_class)) {
|
||
|
|
+ mutex_unlock(&audio_proc_lock);
|
||
|
|
pr_err("Failed to create audio_proc_class\n");
|
||
|
|
return PTR_ERR(audio_proc_class);
|
||
|
|
}
|
||
|
|
@@ -435,7 +439,9 @@ int audio_proc_module_init(void)
|
||
|
|
|
||
|
|
g_proc_initialized = true;
|
||
|
|
|
||
|
|
- pr_info("es_audio_proc: initialized\n");
|
||
|
|
+ mutex_unlock(&audio_proc_lock);
|
||
|
|
+ pr_info("es_audio_proc:initialized\n");
|
||
|
|
+
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
cleanup:
|
||
|
|
@@ -455,6 +461,7 @@ int audio_proc_module_init(void)
|
||
|
|
}
|
||
|
|
|
||
|
|
class_destroy(audio_proc_class);
|
||
|
|
+ mutex_unlock(&audio_proc_lock);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
@@ -464,6 +471,8 @@ void audio_proc_module_exit(void)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
+ mutex_lock(&audio_proc_lock);
|
||
|
|
+
|
||
|
|
if (g_proc_uninitialized) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
@@ -480,5 +489,7 @@ void audio_proc_module_exit(void)
|
||
|
|
|
||
|
|
g_proc_uninitialized = true;
|
||
|
|
|
||
|
|
+ mutex_unlock(&audio_proc_lock);
|
||
|
|
+
|
||
|
|
pr_info("es_audio_proc: uninitialized\n");
|
||
|
|
}
|
||
|
|
--
|
||
|
|
2.47.0
|
||
|
|
|