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[v3] ALSA: hda - set GET bit when adding a vendor verb to the codec regmap

Message ID 1428981936-24976-1-git-send-email-mengdong.lin@intel.com (mailing list archive)
State Accepted
Commit d6eb9e3ec78c98324097bab8eea266c3bb0d0ac7
Headers show

Commit Message

Lin, Mengdong April 14, 2015, 3:25 a.m. UTC 
From: Mengdong Lin <mengdong.lin@intel.com>

Some HD-A codecs may add their own vendor 'set' verb to the regmap, thru func
snd_hdac_add_vendor_verb(). This patch sets the GET bit (bit 11)  when adding
the verb so that its peer vendor 'get' verb is actually added. This can avoid
I/O error when writing the 'set' verb thru remap, since HD-A regmap internally
looks up a writable vendor verb with GET bit set at first.

Signed-off-by: Mengdong Lin <mengdong.lin@intel.com>
diff mbox

Patch

diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c
index 1eb4320..9e933c3 100644
--- a/sound/hda/hdac_regmap.c
+++ b/sound/hda/hdac_regmap.c
@@ -368,7 +368,7 @@  int snd_hdac_regmap_add_vendor_verb(struct hdac_device *codec,
 
 	if (!p)
 		return -ENOMEM;
-	*p = verb;
+	*p = verb | 0x800; /* set GET bit */
 	return 0;
 }
 EXPORT_SYMBOL_GPL(snd_hdac_regmap_add_vendor_verb);