Commit d6eb9e3e authored Apr 14, 2015 by Mengdong Lin Committed by Takashi Iwai Apr 14, 2015

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

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>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

parent ce4524e5

sound/hda/hdac_regmap.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);