| 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: ALSA: hda - New VIA controller suppor no-snoop path |
| |
| From: David Wang <davidwang@zhaoxin.com> |
| |
| commit af52f9982e410edac21ca4b49563053ffc9da1eb upstream. |
| |
| 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> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| |
| --- |
| 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 |
| @@ -1514,7 +1514,8 @@ 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; |
| } |
| |
