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60 lines
2.1 KiB
Diff
60 lines
2.1 KiB
Diff
From 2bf336ed7ff29768b63fcf0d9528dd129f516643 Mon Sep 17 00:00:00 2001
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From: Siena Richard <sienar@codeaurora.org>
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Date: Tue, 31 Jan 2017 12:21:38 -0800
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Subject: ASoC: msm: qdsp6v2: return error when copy from userspace fails
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A copy_from_user is not always expected to succeed. Therefore, check
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for an error before operating on the buffer post copy.
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CRs-Fixed: 1116070
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Change-Id: I21032719e6e85f280ca0cda875c84ac8dee8916b
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Signed-off-by: Siena Richard <sienar@codeaurora.org>
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---
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sound/soc/msm/qdsp6v2/msm-pcm-voip-v2.c | 17 +++++++++++------
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1 file changed, 11 insertions(+), 6 deletions(-)
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diff --git a/sound/soc/msm/qdsp6v2/msm-pcm-voip-v2.c b/sound/soc/msm/qdsp6v2/msm-pcm-voip-v2.c
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index c444a27..b2387a7 100644
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--- a/sound/soc/msm/qdsp6v2/msm-pcm-voip-v2.c
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+++ b/sound/soc/msm/qdsp6v2/msm-pcm-voip-v2.c
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@@ -1,4 +1,4 @@
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-/* Copyright (c) 2012-2016, The Linux Foundation. All rights reserved.
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+/* Copyright (c) 2012-2017, The Linux Foundation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 and
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@@ -814,20 +814,25 @@ static int msm_pcm_playback_copy(struct snd_pcm_substream *substream, int a,
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if (prtd->mode == MODE_PCM) {
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ret = copy_from_user(&buf_node->frame.voc_pkt,
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buf, count);
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+ if (ret) {
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+ pr_err("%s: copy from user failed %d\n",
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+ __func__, ret);
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+ return -EFAULT;
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+ }
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buf_node->frame.pktlen = count;
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} else {
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ret = copy_from_user(&buf_node->frame,
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buf, count);
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+ if (ret) {
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+ pr_err("%s: copy from user failed %d\n",
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+ __func__, ret);
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+ return -EFAULT;
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+ }
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if (buf_node->frame.pktlen >= count)
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buf_node->frame.pktlen = count -
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(sizeof(buf_node->frame.frm_hdr) +
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sizeof(buf_node->frame.pktlen));
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}
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- if (ret) {
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- pr_err("%s: copy from user failed %d\n",
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- __func__, ret);
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- return -EFAULT;
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- }
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spin_lock_irqsave(&prtd->dsp_lock, dsp_flags);
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list_add_tail(&buf_node->list, &prtd->in_queue);
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spin_unlock_irqrestore(&prtd->dsp_lock, dsp_flags);
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--
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cgit v1.1
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