From: Jaroslav Kysela <perex@perex.cz>
Date: Wed, 9 Dec 2009 09:44:47 +0000 (+0100)
Subject: ALSA: hda - Terradici HDA controllers does not support 64-bit mode
X-Git-Tag: firefly_0821_release~11625^2~607
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7cb056b8203edc77c0b69431cf1312805a008484;p=firefly-linux-kernel-4.4.55.git

ALSA: hda - Terradici HDA controllers does not support 64-bit mode

commit 396087eaead95fcb29eb36f1e59517aeb58c545e upstream.

Confirmed from vendor and tests in RedHat bugzilla #536782 .

Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 6517f589d01d..7e4ee4e89737 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2436,6 +2436,11 @@ static int __devinit azx_create(struct snd_card *card, struct pci_dev *pci,
 		}
 	}
 
+	/* disable 64bit DMA address for Teradici */
+	/* it does not work with device 6549:1200 subsys e4a2:040b */
+	if (chip->driver_type == AZX_DRIVER_TERA)
+		gcap &= ~ICH6_GCAP_64OK;
+
 	/* allow 64bit DMA address if supported by H/W */
 	if ((gcap & ICH6_GCAP_64OK) && !pci_set_dma_mask(pci, DMA_BIT_MASK(64)))
 		pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(64));