linux-kernel - [04/90] ALSA: hda - Terradici HDA controllers does not support 64-bit mode

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Date:	Wed, 16 Dec 2009 17:14:15 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>
Subject: [04/90] ALSA: hda - Terradici HDA controllers does not support 64-bit mode

2.6.31-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jaroslav Kysela <perex@...ex.cz>

commit 396087eaead95fcb29eb36f1e59517aeb58c545e upstream.

Confirmed from vendor and tests in RedHat bugzilla #536782 .

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

---
 sound/pci/hda/hda_intel.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2392,6 +2392,11 @@ static int __devinit azx_create(struct s
 		}
 	}
 
+	/* 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));


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