ALSA: hda - Terradici HDA controllers does not support 64-bit mode
Confirmed from vendor and tests in RedHat bugzilla #536782 .
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Cc: <stable@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 d822bfc..efcc4f7 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2450,6 +2450,11 @@
}
}
+ /* 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));