openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ALSA: ctxfi - Fix possible buffer pointer overrun 

Fix possible buffer pointer overruns.  Back to zero when it's equal
or over the buffer size.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Takashi Iwai 2009-06-08 15:07:46 +02:00
parent 514eef9c2a
commit af8500bbbd
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
sound/pci/ctxfi/ctpcm.c
View File

@ -243,6 +243,8 @@ ct_pcm_playback_pointer(struct snd_pcm_substream *substream)
/* Read out playback position */
position = atc->pcm_playback_position(atc, apcm);
position = bytes_to_frames(runtime, position);
if (position >= runtime->buffer_size)
position = 0;
return position;
}
@ -343,6 +345,8 @@ ct_pcm_capture_pointer(struct snd_pcm_substream *substream)
/* Read out playback position */
position = atc->pcm_capture_position(atc, apcm);
position = bytes_to_frames(runtime, position);
if (position >= runtime->buffer_size)
position = 0;
return position;
}