Since we apply the own mutex (bus->cmd_mutex) in HDA core side, the internal locking in regmap is superfluous. This patch adds the flag to indicate that.
Also, an infamous side-effect by this change is that it disables the regmap debugfs, too, and this is seen rather good; the regmap debugfs isn't quite useful for HD-audio as it provides the very sparse registers and its debugfs access tends to lead to the way too high resource usages or sometimes hang up. So it'd be rather safe to disable it altogether.
Link: https://lore.kernel.org/r/2029139028.10333037.1572874551626.JavaMail.zimbra@... Signed-off-by: Takashi Iwai tiwai@suse.de --- sound/hda/hdac_regmap.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/sound/hda/hdac_regmap.c b/sound/hda/hdac_regmap.c index 286361ecd640..906b1e20bae0 100644 --- a/sound/hda/hdac_regmap.c +++ b/sound/hda/hdac_regmap.c @@ -363,6 +363,7 @@ static const struct regmap_config hda_regmap_cfg = { .reg_write = hda_reg_write, .use_single_read = true, .use_single_write = true, + .disable_locking = true, };
/**