Commit bf193630 authored Nov 23, 2015 by Bhalchandra Gajare Committed by Gerrit - the friendly Code Review server Nov 30, 2015

ASoC: msm-cpe-lsm: Fix out of memory on buffer allocation



The buffer used for look-ahead-buffering is allocated during IOCTL from
userspace. It is possible that userspace can invoke this IOCTL multiple
times without invoking the IOCTL to de-allocate the buffer. This results
in out of memory issue for buffer allocation during stress testing. Fix
this issue by avoiding multiple buffer allocations.

CRs-fixed: 942452
Change-Id: Id9eb99dc2c8527fbbe1fe79fca1cdcea232c33da
Signed-off-by: Bhalchandra Gajare <gajare@codeaurora.org>

parent ac6766f8

sound/soc/msm/msm-cpe-lsm.c

+8 −0

Original line number	Diff line number	Diff line
		@@ -424,6 +424,14 @@ static int msm_cpe_lab_buf_alloc(struct snd_pcm_substream *substream,
		u32 count = 0;
		u32 bufsz, bufcnt;

		if (lab_d->pcm_buf &&
		lab_d->pcm_buf->mem) {
		dev_dbg(rtd->dev,
		"%s: LAB buf already allocated\n",
		__func__);
		goto exit;
		}

		bufsz = hw_params->buf_sz;
		bufcnt = hw_params->period_count;