ALSA: hda - Enable sync_write workaround for AMD generically
The workaround for AMD chipset via sync_write flag seems needed for
machines with Realtek codecs. So, it's better to activate it
generically in hda_intel.c from the beginning.
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 6f891ee..f95ff6e 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -1447,6 +1447,17 @@
}
}
+ /* AMD chipsets often cause the communication stalls upon certain
+ * sequence like the pin-detection. It seems that forcing the synced
+ * access works around the stall. Grrr...
+ */
+ if (chip->pci->vendor == PCI_VENDOR_ID_AMD ||
+ chip->pci->vendor == PCI_VENDOR_ID_ATI) {
+ snd_printk(KERN_INFO SFX "Enable sync_write for AMD chipset\n");
+ chip->bus->sync_write = 1;
+ chip->bus->allow_bus_reset = 1;
+ }
+
/* Then create codec instances */
for (c = 0; c < max_slots; c++) {
if ((chip->codec_mask & (1 << c)) & chip->codec_probe_mask) {