[alsa-devel] [PATCH 3/4] hda - compute checksum in HDMI audio infoframe

Signed-off-by: Wu Fengguang fengguang.wu@intel.com --- sound/pci/hda/patch_intelhdmi.c | 5 +++++ 1 file changed, 5 insertions(+)

--- mm.orig/sound/pci/hda/patch_intelhdmi.c +++ mm/sound/pci/hda/patch_intelhdmi.c @@ -366,11 +366,16 @@ static void hdmi_fill_audio_infoframe(st 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]);