From: David Wang <davidwang@zhaoxin.com>
Date: Mon, 16 Apr 2018 09:48:09 +0000 (+0800)
Subject: ALSA: hda - New VIA controller suppor no-snoop path
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=af52f9982e410edac21ca4b49563053ffc9da1eb;p=openwrt%2Fstaging%2Fblogic.git

ALSA: hda - New VIA controller suppor no-snoop path

This patch is used to tell kernel that new VIA HDAC controller also
support no-snoop path.

[ minor coding style fix by tiwai ]

Signed-off-by: David Wang <davidwang@zhaoxin.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index ccffce068634..fece779f6260 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1645,7 +1645,8 @@ static void azx_check_snoop_available(struct azx *chip)
 		 */
 		u8 val;
 		pci_read_config_byte(chip->pci, 0x42, &val);
-		if (!(val & 0x80) && chip->pci->revision == 0x30)
+		if (!(val & 0x80) && (chip->pci->revision == 0x30 ||
+				      chip->pci->revision == 0x20))
 			snoop = false;
 	}