Merge branch 'topic/ak411x-fix' into for-next

3 files changed, 61 insertions, 25 deletions

diff --git a/sound/i2c/other/ak4113.c b/sound/i2c/other/ak4113.c
index 1a3a6fa27158..88844881cbff 100644
--- a/sound/i2c/other/ak4113.c
+++ b/sound/i2c/other/ak4113.c
@@ -56,8 +56,7 @@ static inline unsigned char reg_read(struct ak4113 *ak4113, unsigned char reg)
 
 static void snd_ak4113_free(struct ak4113 *chip)
 {
-        chip->init = 1; /* don't schedule new work */
-        mb();
+        atomic_inc(&chip->wq_processing);       /* don't schedule new work */
         cancel_delayed_work_sync(&chip->work);
         kfree(chip);
 }
@@ -89,6 +88,8 @@ int snd_ak4113_create(struct snd_card *card, ak4113_read_t *read,
         chip->write = write;
         chip->private_data = private_data;
         INIT_DELAYED_WORK(&chip->work, ak4113_stats);
+        atomic_set(&chip->wq_processing, 0);
+        mutex_init(&chip->reinit_mutex);
 
         for (reg = 0; reg < AK4113_WRITABLE_REGS ; reg++)
                 chip->regmap[reg] = pgm[reg];
@@ -139,13 +140,13 @@ static void ak4113_init_regs(struct ak4113 *chip)
 
 void snd_ak4113_reinit(struct ak4113 *chip)
 {
-        chip->init = 1;
-        mb();
-        flush_delayed_work(&chip->work);
+        if (atomic_inc_return(&chip->wq_processing) == 1)
+                cancel_delayed_work_sync(&chip->work);
+        mutex_lock(&chip->reinit_mutex);
         ak4113_init_regs(chip);
+        mutex_unlock(&chip->reinit_mutex);
         /* bring up statistics / event queing */
-        chip->init = 0;
-        if (chip->kctls[0])
+        if (atomic_dec_and_test(&chip->wq_processing))
                 schedule_delayed_work(&chip->work, HZ / 10);
 }
 EXPORT_SYMBOL_GPL(snd_ak4113_reinit);
@@ -632,8 +633,25 @@ static void ak4113_stats(struct work_struct *work)
 {
         struct ak4113 *chip = container_of(work, struct ak4113, work.work);
 
-        if (!chip->init)
+        if (atomic_inc_return(&chip->wq_processing) == 1)
                 snd_ak4113_check_rate_and_errors(chip, chip->check_flags);
 
-        schedule_delayed_work(&chip->work, HZ / 10);
+        if (atomic_dec_and_test(&chip->wq_processing))
+                schedule_delayed_work(&chip->work, HZ / 10);
+}
+
+#ifdef CONFIG_PM
+void snd_ak4113_suspend(struct ak4113 *chip)
+{
+        atomic_inc(&chip->wq_processing); /* don't schedule new work */
+        cancel_delayed_work_sync(&chip->work);
+}
+EXPORT_SYMBOL(snd_ak4113_suspend);
+
+void snd_ak4113_resume(struct ak4113 *chip)
+{
+        atomic_dec(&chip->wq_processing);
+        snd_ak4113_reinit(chip);
 }
+EXPORT_SYMBOL(snd_ak4113_resume);
+#endif
diff --git a/sound/i2c/other/ak4114.c b/sound/i2c/other/ak4114.c
index c7f56339415d..5a4cf3fab4ae 100644
--- a/sound/i2c/other/ak4114.c
+++ b/sound/i2c/other/ak4114.c
@@ -66,8 +66,7 @@ static void reg_dump(struct ak4114 *ak4114)
 
 static void snd_ak4114_free(struct ak4114 *chip)
 {
-        chip->init = 1; /* don't schedule new work */
-        mb();
+        atomic_inc(&chip->wq_processing);       /* don't schedule new work */
         cancel_delayed_work_sync(&chip->work);
         kfree(chip);
 }
@@ -100,6 +99,8 @@ int snd_ak4114_create(struct snd_card *card,
         chip->write = write;
         chip->private_data = private_data;
         INIT_DELAYED_WORK(&chip->work, ak4114_stats);
+        atomic_set(&chip->wq_processing, 0);
+        mutex_init(&chip->reinit_mutex);
 
         for (reg = 0; reg < 6; reg++)
                 chip->regmap[reg] = pgm[reg];
@@ -122,6 +123,7 @@ int snd_ak4114_create(struct snd_card *card,
         snd_ak4114_free(chip);
         return err < 0 ? err : -EIO;
 }
+EXPORT_SYMBOL(snd_ak4114_create);
 
 void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char mask, unsigned char val)
 {
@@ -131,6 +133,7 @@ void snd_ak4114_reg_write(struct ak4114 *chip, unsigned char reg, unsigned char
                 reg_write(chip, reg,
                           (chip->txcsb[reg-AK4114_REG_TXCSB0] & ~mask) | val);
 }
+EXPORT_SYMBOL(snd_ak4114_reg_write);
 
 static void ak4114_init_regs(struct ak4114 *chip)
 {
@@ -152,15 +155,16 @@ static void ak4114_init_regs(struct ak4114 *chip)
 
 void snd_ak4114_reinit(struct ak4114 *chip)
 {
-        chip->init = 1;
-        mb();
-        flush_delayed_work(&chip->work);
+        if (atomic_inc_return(&chip->wq_processing) == 1)
+                cancel_delayed_work_sync(&chip->work);
+        mutex_lock(&chip->reinit_mutex);
         ak4114_init_regs(chip);
+        mutex_unlock(&chip->reinit_mutex);
         /* bring up statistics / event queing */
-        chip->init = 0;
-        if (chip->kctls[0])
+        if (atomic_dec_and_test(&chip->wq_processing))
                 schedule_delayed_work(&chip->work, HZ / 10);
 }
+EXPORT_SYMBOL(snd_ak4114_reinit);
 
 static unsigned int external_rate(unsigned char rcs1)
 {
@@ -505,6 +509,7 @@ int snd_ak4114_build(struct ak4114 *ak4114,
         schedule_delayed_work(&ak4114->work, HZ / 10);
         return 0;
 }
+EXPORT_SYMBOL(snd_ak4114_build);
 
 /* notify kcontrols if any parameters are changed */
 static void ak4114_notify(struct ak4114 *ak4114,
@@ -560,6 +565,7 @@ int snd_ak4114_external_rate(struct ak4114 *ak4114)
         rcs1 = reg_read(ak4114, AK4114_REG_RCS1);
         return external_rate(rcs1);
 }
+EXPORT_SYMBOL(snd_ak4114_external_rate);
 
 int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
 {
@@ -607,20 +613,30 @@ int snd_ak4114_check_rate_and_errors(struct ak4114 *ak4114, unsigned int flags)
         }
         return res;
 }
+EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
 
 static void ak4114_stats(struct work_struct *work)
 {
         struct ak4114 *chip = container_of(work, struct ak4114, work.work);
 
-        if (!chip->init)
+        if (atomic_inc_return(&chip->wq_processing) == 1)
                 snd_ak4114_check_rate_and_errors(chip, chip->check_flags);
+        if (atomic_dec_and_test(&chip->wq_processing))
+                schedule_delayed_work(&chip->work, HZ / 10);
+}
 
-        schedule_delayed_work(&chip->work, HZ / 10);
+#ifdef CONFIG_PM
+void snd_ak4114_suspend(struct ak4114 *chip)
+{
+        atomic_inc(&chip->wq_processing); /* don't schedule new work */
+        cancel_delayed_work_sync(&chip->work);
 }
+EXPORT_SYMBOL(snd_ak4114_suspend);
 
-EXPORT_SYMBOL(snd_ak4114_create);
-EXPORT_SYMBOL(snd_ak4114_reg_write);
-EXPORT_SYMBOL(snd_ak4114_reinit);
-EXPORT_SYMBOL(snd_ak4114_build);
-EXPORT_SYMBOL(snd_ak4114_external_rate);
-EXPORT_SYMBOL(snd_ak4114_check_rate_and_errors);
+void snd_ak4114_resume(struct ak4114 *chip)
+{
+        atomic_dec(&chip->wq_processing);
+        snd_ak4114_reinit(chip);
+}
+EXPORT_SYMBOL(snd_ak4114_resume);
+#endif
diff --git a/sound/pci/ice1712/juli.c b/sound/pci/ice1712/juli.c
index a1536c1a7ed4..4f0213427152 100644
--- a/sound/pci/ice1712/juli.c
+++ b/sound/pci/ice1712/juli.c
@@ -491,15 +491,17 @@ static int juli_resume(struct snd_ice1712 *ice)
         /* akm4358 un-reset, un-mute */
         snd_akm4xxx_reset(ak, 0);
         /* reinit ak4114 */
-        snd_ak4114_reinit(spec->ak4114);
+        snd_ak4114_resume(spec->ak4114);
         return 0;
 }
 
 static int juli_suspend(struct snd_ice1712 *ice)
 {
         struct snd_akm4xxx *ak = ice->akm;
+        struct juli_spec *spec = ice->spec;
         /* akm4358 reset and soft-mute */
         snd_akm4xxx_reset(ak, 1);
+        snd_ak4114_suspend(spec->ak4114);
         return 0;
 }
 #endif