From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 16 Oct 2007 12:26:32 +0000 (+0200)
Subject: ALSA: hdsp - Fix zero division
X-Git-Tag: v2.6.23.6~28
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=4bf6e92a4198394e7ca349f263d7e5be1e472e55;p=karo-tx-linux.git

ALSA: hdsp - Fix zero division

patch 2a3988f6d2c5be9d02463097775d1c66a8290527 in mainline.

Fix zero-division bug in the calculation dds offset.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: Maarten Bressers <mbressers@gmail.com>
Cc: gentoo kernel <kernel@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/sound/pci/rme9652/hdsp.c b/sound/pci/rme9652/hdsp.c
index 3b3ef657f73e..75dcb9acee99 100644
--- a/sound/pci/rme9652/hdsp.c
+++ b/sound/pci/rme9652/hdsp.c
@@ -3108,6 +3108,9 @@ static int hdsp_dds_offset(struct hdsp *hdsp)
 	unsigned int dds_value = hdsp->dds_value;
 	int system_sample_rate = hdsp->system_sample_rate;
 
+	if (!dds_value)
+		return 0;
+
 	n = DDS_NUMERATOR;
 	/*
 	 * dds_value = n / rate