From 1f93a7dfd1f8d5ff7a5c53246c7534fe2332d6f4 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Mon, 11 Dec 2023 02:46:07 +0000
Subject: [PATCH] add audio
---
kernel/sound/core/hwdep_compat.c | 41 +++++++++--------------------------------
1 files changed, 9 insertions(+), 32 deletions(-)
diff --git a/kernel/sound/core/hwdep_compat.c b/kernel/sound/core/hwdep_compat.c
index 3827c0c..a0b7670 100644
--- a/kernel/sound/core/hwdep_compat.c
+++ b/kernel/sound/core/hwdep_compat.c
@@ -1,21 +1,7 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/*
* 32bit -> 64bit ioctl wrapper for hwdep API
* Copyright (c) by Takashi Iwai <tiwai@suse.de>
- *
- * 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
- *
*/
/* This file is included from hwdep.c */
@@ -33,26 +19,17 @@
static int snd_hwdep_dsp_load_compat(struct snd_hwdep *hw,
struct snd_hwdep_dsp_image32 __user *src)
{
- struct snd_hwdep_dsp_image __user *dst;
+ struct snd_hwdep_dsp_image info = {};
compat_caddr_t ptr;
- u32 val;
- dst = compat_alloc_user_space(sizeof(*dst));
+ if (copy_from_user(&info, src, 4 + 64) ||
+ get_user(ptr, &src->image) ||
+ get_user(info.length, &src->length) ||
+ get_user(info.driver_data, &src->driver_data))
+ return -EFAULT;
+ info.image = compat_ptr(ptr);
- /* index and name */
- if (copy_in_user(dst, src, 4 + 64))
- return -EFAULT;
- if (get_user(ptr, &src->image) ||
- put_user(compat_ptr(ptr), &dst->image))
- return -EFAULT;
- if (get_user(val, &src->length) ||
- put_user(val, &dst->length))
- return -EFAULT;
- if (get_user(val, &src->driver_data) ||
- put_user(val, &dst->driver_data))
- return -EFAULT;
-
- return snd_hwdep_dsp_load(hw, dst);
+ return snd_hwdep_dsp_load(hw, &info);
}
enum {
--
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