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ALSA: hda - compute checksum in HDMI audio infoframe
author
Wu Fengguang
<fengguang.wu@intel.com>
Wed, 11 Feb 2009 07:22:30 +0000
(15:22 +0800)
committer
Takashi Iwai
<tiwai@suse.de>
Wed, 11 Feb 2009 08:09:07 +0000
(09:09 +0100)
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/patch_intelhdmi.c
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diff --git
a/sound/pci/hda/patch_intelhdmi.c
b/sound/pci/hda/patch_intelhdmi.c
index
f2610d6
..
90b1137
100644
(file)
--- a/
sound/pci/hda/patch_intelhdmi.c
+++ b/
sound/pci/hda/patch_intelhdmi.c
@@
-366,11
+366,16
@@
static void hdmi_fill_audio_infoframe(struct hda_codec *codec,
struct hdmi_audio_infoframe *ai)
{
u8 *params = (u8 *)ai;
+ u8 sum = 0;
int i;
hdmi_debug_dip_size(codec);
hdmi_clear_dip_buffers(codec); /* be paranoid */
+ for (i = 0; i < sizeof(ai); i++)
+ sum += params[i];
+ ai->checksum = - sum;
+
hdmi_set_dip_index(codec, PIN_NID, 0x0, 0x0);
for (i = 0; i < sizeof(ai); i++)
hdmi_write_dip_byte(codec, PIN_NID, params[i]);