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Commit 9a957a24 authored by Wu Fengguang's avatar Wu Fengguang Committed by Takashi Iwai
Browse files

ALSA: hda - compute checksum in HDMI audio infoframe 



Signed-off-by: default avatarWu Fengguang <fengguang.wu@intel.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 606c0cee

sound/pci/hda/patch_intelhdmi.c

+5 −0
Original line number Diff line number Diff line
@@ -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]);