From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/sound/core/hwdep.c | 46 +++++++++++++++++++---------------------------
1 files changed, 19 insertions(+), 27 deletions(-)
diff --git a/kernel/sound/core/hwdep.c b/kernel/sound/core/hwdep.c
index 600ab2e..0c02989 100644
--- a/kernel/sound/core/hwdep.c
+++ b/kernel/sound/core/hwdep.c
@@ -1,22 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Hardware dependent layer
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
- *
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
*/
#include <linux/major.h>
@@ -218,27 +203,34 @@
}
static int snd_hwdep_dsp_load(struct snd_hwdep *hw,
- struct snd_hwdep_dsp_image __user *_info)
+ struct snd_hwdep_dsp_image *info)
{
- struct snd_hwdep_dsp_image info;
int err;
if (! hw->ops.dsp_load)
return -ENXIO;
- memset(&info, 0, sizeof(info));
- if (copy_from_user(&info, _info, sizeof(info)))
- return -EFAULT;
- if (info.index >= 32)
+ if (info->index >= 32)
return -EINVAL;
/* check whether the dsp was already loaded */
- if (hw->dsp_loaded & (1u << info.index))
+ if (hw->dsp_loaded & (1u << info->index))
return -EBUSY;
- err = hw->ops.dsp_load(hw, &info);
+ err = hw->ops.dsp_load(hw, info);
if (err < 0)
return err;
- hw->dsp_loaded |= (1u << info.index);
+ hw->dsp_loaded |= (1u << info->index);
return 0;
}
+
+static int snd_hwdep_dsp_load_user(struct snd_hwdep *hw,
+ struct snd_hwdep_dsp_image __user *_info)
+{
+ struct snd_hwdep_dsp_image info = {};
+
+ if (copy_from_user(&info, _info, sizeof(info)))
+ return -EFAULT;
+ return snd_hwdep_dsp_load(hw, &info);
+}
+
static long snd_hwdep_ioctl(struct file * file, unsigned int cmd,
unsigned long arg)
@@ -253,7 +245,7 @@
case SNDRV_HWDEP_IOCTL_DSP_STATUS:
return snd_hwdep_dsp_status(hw, argp);
case SNDRV_HWDEP_IOCTL_DSP_LOAD:
- return snd_hwdep_dsp_load(hw, argp);
+ return snd_hwdep_dsp_load_user(hw, argp);
}
if (hw->ops.ioctl)
return hw->ops.ioctl(hw, file, cmd, arg);
@@ -368,7 +360,7 @@
{
struct snd_hwdep *hwdep;
int err;
- static struct snd_device_ops ops = {
+ static const struct snd_device_ops ops = {
.dev_free = snd_hwdep_dev_free,
.dev_register = snd_hwdep_dev_register,
.dev_disconnect = snd_hwdep_dev_disconnect,
--
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