92 lines
2.2 KiB
Diff
92 lines
2.2 KiB
Diff
From 2d5c278a87080089d00780ae09eaeea9b168ccca Mon Sep 17 00:00:00 2001
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From: yangqiang <yangqiang1@eswincomputing.com>
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Date: Fri, 8 Nov 2024 14:56:51 +0800
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Subject: [PATCH 212/219] feat:add audio proc mutex.
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Changelogs:
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add audio proc mutex.
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Signed-off-by: yangqiang <yangqiang1@eswincomputing.com>
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---
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sound/soc/eswin/esw-audio-proc.c | 17 ++++++++++++++---
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1 file changed, 14 insertions(+), 3 deletions(-)
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diff --git a/sound/soc/eswin/esw-audio-proc.c b/sound/soc/eswin/esw-audio-proc.c
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index f0c0cbe10f56..83c3bbb26c73 100644
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--- a/sound/soc/eswin/esw-audio-proc.c
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+++ b/sound/soc/eswin/esw-audio-proc.c
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@@ -27,6 +27,7 @@
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#include <linux/eventfd.h>
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#include <linux/ioctl.h>
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#include <linux/device.h>
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+#include <linux/mutex.h>
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// proc data definition
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typedef enum
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@@ -79,6 +80,7 @@ static int audio_proc_major[NUM_DEVICES] = {0};
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static struct class *audio_proc_class = NULL;
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static struct device *audio_proc_device[NUM_DEVICES] = {NULL};
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static int32_t *g_perf_data[NUM_DEVICES] = {NULL};
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+static DEFINE_MUTEX(audio_proc_lock);
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static void show_aenc_data(struct seq_file *m)
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{
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@@ -393,14 +395,16 @@ int audio_proc_module_init(void)
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int i, ret;
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struct device *dev;
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+ mutex_lock(&audio_proc_lock);
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+
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if (g_proc_initialized) {
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+ mutex_unlock(&audio_proc_lock);
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return 0;
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}
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- pr_info("audio_proc_module_init enter.\n");
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-
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audio_proc_class = class_create("audio_proc_class");
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if (IS_ERR(audio_proc_class)) {
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+ mutex_unlock(&audio_proc_lock);
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pr_err("Failed to create audio_proc_class\n");
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return PTR_ERR(audio_proc_class);
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}
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@@ -435,7 +439,9 @@ int audio_proc_module_init(void)
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g_proc_initialized = true;
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- pr_info("es_audio_proc: initialized\n");
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+ mutex_unlock(&audio_proc_lock);
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+ pr_info("es_audio_proc:initialized\n");
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+
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return 0;
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cleanup:
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@@ -455,6 +461,7 @@ int audio_proc_module_init(void)
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}
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class_destroy(audio_proc_class);
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+ mutex_unlock(&audio_proc_lock);
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return ret;
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}
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@@ -464,6 +471,8 @@ void audio_proc_module_exit(void)
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{
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int i;
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+ mutex_lock(&audio_proc_lock);
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+
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if (g_proc_uninitialized) {
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return;
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}
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@@ -480,5 +489,7 @@ void audio_proc_module_exit(void)
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g_proc_uninitialized = true;
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+ mutex_unlock(&audio_proc_lock);
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+
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pr_info("es_audio_proc: uninitialized\n");
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}
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--
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2.47.0
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