Commit 379170a4 authored by Dan Carpenter's avatar Dan Carpenter Committed by Takashi Iwai
Browse files

sound: oss/sb_audio: cap value in sb201_audio_set_speed() 



We set "s" before we have capped "speed" so it could be the wrong value.
This could lead to a divide by zero bug.

Signed-off-by: default avatarDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 190006f9

sound/oss/sb_audio.c

+2 −1
Original line number Diff line number Diff line
@@ -442,7 +442,7 @@ static int sb201_audio_set_speed(int dev, int speed) 
{

	sb_devc *devc = audio_devs[dev]->devc;

	int tmp;

	int s = speed * devc->channels;

	int s;



	if (speed > 0)

	{
@@ -452,6 +452,7 @@ static int sb201_audio_set_speed(int dev, int speed) 
			speed = 44100;

		if (devc->opened & OPEN_READ && speed > 15000)

			speed = 15000;

		s = speed * devc->channels;

		devc->tconst = (256 - ((1000000 + s / 2) / s)) & 0xff;

		tmp = 256 - devc->tconst;

		speed = ((1000000 + tmp / 2) / tmp) / devc->channels;