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path: root/drivers/w1/slaves
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Diffstat (limited to 'drivers/w1/slaves')
-rw-r--r--drivers/w1/slaves/w1_ds2433.c20
-rw-r--r--drivers/w1/slaves/w1_therm.c12
2 files changed, 6 insertions, 26 deletions
diff --git a/drivers/w1/slaves/w1_ds2433.c b/drivers/w1/slaves/w1_ds2433.c
index ddd01e6fc2c..2ac238f1480 100644
--- a/drivers/w1/slaves/w1_ds2433.c
+++ b/drivers/w1/slaves/w1_ds2433.c
@@ -105,11 +105,7 @@ static ssize_t w1_f23_read_bin(struct kobject *kobj, char *buf, loff_t off,
if ((count = w1_f23_fix_count(off, count, W1_EEPROM_SIZE)) == 0)
return 0;
- atomic_inc(&sl->refcnt);
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
+ mutex_lock(&sl->master->mutex);
#ifdef CONFIG_W1_F23_CRC
@@ -140,9 +136,7 @@ static ssize_t w1_f23_read_bin(struct kobject *kobj, char *buf, loff_t off,
#endif /* CONFIG_W1_F23_CRC */
out_up:
- up(&sl->master->mutex);
-out_dec:
- atomic_dec(&sl->refcnt);
+ mutex_unlock(&sl->master->mutex);
return count;
}
@@ -231,11 +225,7 @@ static ssize_t w1_f23_write_bin(struct kobject *kobj, char *buf, loff_t off,
}
#endif /* CONFIG_W1_F23_CRC */
- atomic_inc(&sl->refcnt);
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
+ mutex_lock(&sl->master->mutex);
/* Can only write data to one page at a time */
idx = 0;
@@ -253,9 +243,7 @@ static ssize_t w1_f23_write_bin(struct kobject *kobj, char *buf, loff_t off,
}
out_up:
- up(&sl->master->mutex);
-out_dec:
- atomic_dec(&sl->refcnt);
+ mutex_unlock(&sl->master->mutex);
return count;
}
diff --git a/drivers/w1/slaves/w1_therm.c b/drivers/w1/slaves/w1_therm.c
index 44afdffe3c8..5372cfcbd05 100644
--- a/drivers/w1/slaves/w1_therm.c
+++ b/drivers/w1/slaves/w1_therm.c
@@ -165,12 +165,7 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, si
u8 rom[9], crc, verdict;
int i, max_trying = 10;
- atomic_inc(&sl->refcnt);
- smp_mb__after_atomic_inc();
- if (down_interruptible(&sl->master->mutex)) {
- count = 0;
- goto out_dec;
- }
+ mutex_lock(&sl->master->mutex);
if (off > W1_SLAVE_DATA_SIZE) {
count = 0;
@@ -233,10 +228,7 @@ static ssize_t w1_therm_read_bin(struct kobject *kobj, char *buf, loff_t off, si
count += sprintf(buf + count, "t=%d\n", w1_convert_temp(rom, sl->family->fid));
out:
- up(&dev->mutex);
-out_dec:
- smp_mb__before_atomic_inc();
- atomic_dec(&sl->refcnt);
+ mutex_unlock(&dev->mutex);
return count;
}