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dsp: codecs: fix range check for audio buffer copying

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The range checking for audio buffer copying in function
"audio_in_write" is using the incorrect buffer size.
Change it to the actual allocated audio buffer size.

Change-Id: Icb9a9e9c3b3d3c6e55e7bad20b34f94784b82674
Signed-off-by: Xiaoyu Ye <benyxy@codeaurora.org>
This commit is contained in:
Xiaoyu Ye
2019-02-01 17:55:06 -08:00
committed by Gerrit - the friendly Code Review server
parent a60b408c5a
commit 6c0100f281
1 changed files with 2 additions and 3 deletions
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5
dsp/codecs/audio_utils.c
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@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0-only // SPDX-License-Identifier: GPL-2.0-only
/* Copyright (c) 2010-2018, The Linux Foundation. All rights reserved. /* Copyright (c) 2010-2019, The Linux Foundation. All rights reserved.
*/ */
#include <linux/module.h> #include <linux/module.h>
@@ -900,9 +900,8 @@ ssize_t audio_in_write(struct file *file,
__func__, audio->ac->session); __func__, audio->ac->session);
} }
} }
xfer = (count > (audio->pcm_cfg.buffer_size)) ?
(audio->pcm_cfg.buffer_size) : count;
xfer = (count > size) ? size : count;
if (copy_from_user(cpy_ptr, buf, xfer)) { if (copy_from_user(cpy_ptr, buf, xfer)) {
rc = -EFAULT; rc = -EFAULT;
break; break;