On Mon, 14 Feb 2022 13:28:38 +0100,
Julian Wollrath wrote:
>
> Dear Takashi Iwai,
>
> since v5.17.0-rc3 my system (HP Elitebook 845 G7) fails to suspend to
> disk and instead just hangs. Rebooting via the magic sysrq keys is
> still possible though. I bisected the regression to commit
> b837a9f5ab3bdfab9233c9f98a6bef717673a3e5 (ALSA: hda: realtek: Fix race
> at concurrent COEF updates). Reverting that commit removes the problem.
> I you need more information, I am happy to provide it.
Does the patch below help?
thanks,
Takashi
--- a/sound/pci/hda/patch_realtek.c
+++ b/sound/pci/hda/patch_realtek.c
@@ -138,6 +138,22 @@ struct alc_spec {
* COEF access helper functions
*/
+static void coef_mutex_lock(struct hda_codec *codec)
+{
+ struct alc_spec *spec = codec->spec;
+
+ snd_hda_power_up_pm(codec);
+ mutex_lock(&spec->coef_mutex);
+}
+
+static void coef_mutex_unlock(struct hda_codec *codec)
+{
+ struct alc_spec *spec = codec->spec;
+
+ mutex_unlock(&spec->coef_mutex);
+ snd_hda_power_down_pm(codec);
+}
+
static int __alc_read_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
unsigned int coef_idx)
{
@@ -151,12 +167,11 @@ static int __alc_read_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
static int alc_read_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
unsigned int coef_idx)
{
- struct alc_spec *spec = codec->spec;
unsigned int val;
- mutex_lock(&spec->coef_mutex);
+ coef_mutex_lock(codec);
val = __alc_read_coefex_idx(codec, nid, coef_idx);
- mutex_unlock(&spec->coef_mutex);
+ coef_mutex_unlock(codec);
return val;
}
@@ -173,11 +188,9 @@ static void __alc_write_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
static void alc_write_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
unsigned int coef_idx, unsigned int coef_val)
{
- struct alc_spec *spec = codec->spec;
-
- mutex_lock(&spec->coef_mutex);
+ coef_mutex_lock(codec);
__alc_write_coefex_idx(codec, nid, coef_idx, coef_val);
- mutex_unlock(&spec->coef_mutex);
+ coef_mutex_unlock(codec);
}
#define alc_write_coef_idx(codec, coef_idx, coef_val) \
@@ -198,11 +211,9 @@ static void alc_update_coefex_idx(struct hda_codec *codec, hda_nid_t nid,
unsigned int coef_idx, unsigned int mask,
unsigned int bits_set)
{
- struct alc_spec *spec = codec->spec;
-
- mutex_lock(&spec->coef_mutex);
+ coef_mutex_lock(codec);
__alc_update_coefex_idx(codec, nid, coef_idx, mask, bits_set);
- mutex_unlock(&spec->coef_mutex);
+ coef_mutex_unlock(codec);
}
#define alc_update_coef_idx(codec, coef_idx, mask, bits_set) \
@@ -235,9 +246,7 @@ struct coef_fw {
static void alc_process_coef_fw(struct hda_codec *codec,
const struct coef_fw *fw)
{
- struct alc_spec *spec = codec->spec;
-
- mutex_lock(&spec->coef_mutex);
+ coef_mutex_lock(codec);
for (; fw->nid; fw++) {
if (fw->mask == (unsigned short)-1)
__alc_write_coefex_idx(codec, fw->nid, fw->idx, fw->val);
@@ -245,7 +254,7 @@ static void alc_process_coef_fw(struct hda_codec *codec,
__alc_update_coefex_idx(codec, fw->nid, fw->idx,
fw->mask, fw->val);
}
- mutex_unlock(&spec->coef_mutex);
+ coef_mutex_unlock(codec);
}
/*