From af52f9982e410edac21ca4b49563053ffc9da1eb Mon Sep 17 00:00:00 2001
From: David Wang <davidwang@zhaoxin.com>
Date: Mon, 16 Apr 2018 17:48:09 +0800
Subject: [PATCH] ALSA: hda - New VIA controller suppor no-snoop path
Git-commit: af52f9982e410edac21ca4b49563053ffc9da1eb
Patch-mainline: v4.17-rc2
References: bsc#1051510
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>
---
sound/pci/hda/hda_intel.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1645,7 +1645,8 @@ static void azx_check_snoop_available(st
*/
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;
}