diff options
| author | Takashi Iwai | 2011-02-11 12:17:30 +0100 |
|---|---|---|
| committer | Takashi Iwai | 2011-02-11 12:18:57 +0100 |
| commit | 2b203dbbcbac731b07bd0e27c3eda26a26aecb72 (patch) | |
| tree | a89000e967bb774643e940710da6c95f0f944166 | |
| parent | 965b76d23ea354848dea8d34059d04e150dcd464 (diff) | |
ALSA: hda - Avoid cast with union data for HDMI audio infoframe
Signed-off-by: Takashi Iwai <tiwai@suse.de>
| -rw-r--r-- | sound/pci/hda/patch_hdmi.c | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c index a58767736727..bb4930484ec4 100644 --- a/sound/pci/hda/patch_hdmi.c +++ b/sound/pci/hda/patch_hdmi.c @@ -110,6 +110,12 @@ struct dp_audio_infoframe { u8 LFEPBL01_LSV36_DM_INH7; }; +union audio_infoframe { + struct hdmi_audio_infoframe hdmi; + struct dp_audio_infoframe dp; + u8 bytes[0]; +}; + /* * CEA speaker placement: * @@ -620,8 +626,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid, int channels = substream->runtime->channels; int ca; int i; - u8 ai[max(sizeof(struct hdmi_audio_infoframe), - sizeof(struct dp_audio_infoframe))]; + union audio_infoframe ai; ca = hdmi_channel_allocation(codec, nid, channels); @@ -633,11 +638,10 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid, pin_nid = spec->pin[i]; - memset(ai, 0, sizeof(ai)); + memset(&ai, 0, sizeof(ai)); if (spec->sink_eld[i].conn_type == 0) { /* HDMI */ - struct hdmi_audio_infoframe *hdmi_ai; + struct hdmi_audio_infoframe *hdmi_ai = &ai.hdmi; - hdmi_ai = (struct hdmi_audio_infoframe *)ai; hdmi_ai->type = 0x84; hdmi_ai->ver = 0x01; hdmi_ai->len = 0x0a; @@ -645,9 +649,8 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid, hdmi_ai->CA = ca; hdmi_checksum_audio_infoframe(hdmi_ai); } else if (spec->sink_eld[i].conn_type == 1) { /* DisplayPort */ - struct dp_audio_infoframe *dp_ai; + struct dp_audio_infoframe *dp_ai = &ai.dp; - dp_ai = (struct dp_audio_infoframe *)ai; dp_ai->type = 0x84; dp_ai->len = 0x1b; dp_ai->ver = 0x11 << 2; @@ -664,7 +667,8 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid, * sizeof(*dp_ai) to avoid partial match/update problems when * the user switches between HDMI/DP monitors. */ - if (!hdmi_infoframe_uptodate(codec, pin_nid, ai, sizeof(ai))) { + if (!hdmi_infoframe_uptodate(codec, pin_nid, ai.bytes, + sizeof(ai))) { snd_printdd("hdmi_setup_audio_infoframe: " "cvt=%d pin=%d channels=%d\n", nid, pin_nid, @@ -672,7 +676,7 @@ static void hdmi_setup_audio_infoframe(struct hda_codec *codec, hda_nid_t nid, hdmi_setup_channel_mapping(codec, pin_nid, ca); hdmi_stop_infoframe_trans(codec, pin_nid); hdmi_fill_audio_infoframe(codec, pin_nid, - ai, sizeof(ai)); + ai.bytes, sizeof(ai)); hdmi_start_infoframe_trans(codec, pin_nid); } } |