releases/2.6.22.14/alsa-hdsp-fix-zero-division.patch

   1 From 2a3988f6d2c5be9d02463097775d1c66a8290527 Mon Sep 17 00:00:00 2001
   2 From: Takashi Iwai <tiwai@suse.de>
   3 Date: Tue, 16 Oct 2007 14:26:32 +0200
   4 Subject: ALSA: hdsp - Fix zero division
   5 Message-ID: <b28811ef0711061446q3eb7330cm31a4c57a9ed00cc3@mail.gmail.com>
   6
   7 From: Takashi Iwai <tiwai@suse.de>
   8
   9 patch 2a3988f6d2c5be9d02463097775d1c66a8290527 in mainline.
  10
  11 Fix zero-division bug in the calculation dds offset.
  12
  13 Signed-off-by: Takashi Iwai <tiwai@suse.de>
  14 Signed-off-by: Jaroslav Kysela <perex@perex.cz>
  15 Cc: Maarten Bressers <mbressers@gmail.com>
  16 Cc: gentoo kernel <kernel@gentoo.org>
  17 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  18
  19 ---
  20  sound/pci/rme9652/hdsp.c |    3 +++
  21  1 file changed, 3 insertions(+)
  22
  23 --- a/sound/pci/rme9652/hdsp.c
  24 +++ b/sound/pci/rme9652/hdsp.c
  25 @@ -3108,6 +3108,9 @@ static int hdsp_dds_offset(struct hdsp *
  26         unsigned int dds_value = hdsp->dds_value;
  27         int system_sample_rate = hdsp->system_sample_rate;
  28
  29 +       if (!dds_value)
  30 +               return 0;
  31 +
  32         n = DDS_NUMERATOR;
  33         /*
  34          * dds_value = n / rate