From: Takashi Iwai <tiwai@suse.de>
Date: Tue, 22 Nov 2011 18:58:56 +0000 (+0100)
Subject: ALSA: hda - Check subdevice mask in snd_hda_check_board_codec_sid_config()
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=e2301a4de22c438f5a962c7cefc3e9cba736991c;p=~shefty%2Frdma-dev.git

ALSA: hda - Check subdevice mask in snd_hda_check_board_codec_sid_config()

In snd_hda_check_board_codec_sid_config(), not only comparing with the
exact value but allow the bit-mask comparison for vendor-only, etc.

Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Dirk Hohndel <hohndel@infradead.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index e44b107fdc7..4562e9de6a1 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -4046,9 +4046,9 @@ int snd_hda_check_board_codec_sid_config(struct hda_codec *codec,
 
 	/* Search for codec ID */
 	for (q = tbl; q->subvendor; q++) {
-		unsigned long vendorid = (q->subdevice) | (q->subvendor << 16);
-
-		if (vendorid == codec->subsystem_id)
+		unsigned int mask = 0xffff0000 | q->subdevice_mask;
+		unsigned int id = (q->subdevice | (q->subvendor << 16)) & mask;
+		if ((codec->subsystem_id & mask) == id)
 			break;
 	}