ALSA: hda - Limit codec-verb retry to limited hardwares
The reset of a BUS controller during operations is somehow risky and
shouldn't be done inevitably for devices that have apparently no such
codec-communication problems.
This patch adds the check of the hardware and limits the bus-reset
capability.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
index 48f4a36..42f944b 100644
--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -5375,6 +5375,15 @@
if (get_wcaps(codec, 0xa) & AC_WCAP_IN_AMP)
snd_hda_sequence_write_cache(codec, unmute_init);
+ /* Some HP machines seem to have unstable codec communications
+ * especially with ATI fglrx driver. For recovering from the
+ * CORB/RIRB stall, allow the BUS reset and keep always sync
+ */
+ if (spec->board_config == STAC_HP_DV5) {
+ codec->bus->sync_write = 1;
+ codec->bus->allow_bus_reset = 1;
+ }
+
spec->aloopback_ctl = stac92hd71bxx_loopback;
spec->aloopback_mask = 0x50;
spec->aloopback_shift = 0;
