diff options
| -rw-r--r-- | sound/pci/hda/patch_intelhdmi.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/sound/pci/hda/patch_intelhdmi.c b/sound/pci/hda/patch_intelhdmi.c index c5fd011567f..d68dba9ac11 100644 --- a/sound/pci/hda/patch_intelhdmi.c +++ b/sound/pci/hda/patch_intelhdmi.c @@ -508,24 +508,35 @@ static void hdmi_clear_dip_buffers(struct hda_codec *codec, hda_nid_t pin_nid) #endif } +static void hdmi_checksum_audio_infoframe(struct hdmi_audio_infoframe *ai) +{ + u8 *bytes = (u8 *)ai; + u8 sum = 0; + int i; + + ai->checksum = 0; + + for (i = 0; i < sizeof(*ai); i++) + sum += bytes[i]; + + ai->checksum = - sum; +} + static void hdmi_fill_audio_infoframe(struct hda_codec *codec, hda_nid_t pin_nid, struct hdmi_audio_infoframe *ai) { - u8 *params = (u8 *)ai; - u8 sum = 0; + u8 *bytes = (u8 *)ai; int i; hdmi_debug_dip_size(codec, pin_nid); hdmi_clear_dip_buffers(codec, pin_nid); /* be paranoid */ - for (i = 0; i < sizeof(*ai); i++) - sum += params[i]; - ai->checksum = - sum; + hdmi_checksum_audio_infoframe(ai); 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]); + hdmi_write_dip_byte(codec, pin_nid, bytes[i]); } /* |