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path: root/drivers/pwm
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Diffstat (limited to 'drivers/pwm')
-rw-r--r--drivers/pwm/core.c27
1 files changed, 12 insertions, 15 deletions
diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index ebe06efe9de5..2338119a09d8 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -272,20 +272,21 @@ int pwmchip_add(struct pwm_chip *chip)
if (!pwm_ops_check(chip))
return -EINVAL;
+ chip->pwms = kcalloc(chip->npwm, sizeof(*pwm), GFP_KERNEL);
+ if (!chip->pwms)
+ return -ENOMEM;
+
mutex_lock(&pwm_lock);
ret = alloc_pwms(chip->npwm);
- if (ret < 0)
- goto out;
+ if (ret < 0) {
+ mutex_unlock(&pwm_lock);
+ kfree(chip->pwms);
+ return ret;
+ }
chip->base = ret;
- chip->pwms = kcalloc(chip->npwm, sizeof(*pwm), GFP_KERNEL);
- if (!chip->pwms) {
- ret = -ENOMEM;
- goto out;
- }
-
for (i = 0; i < chip->npwm; i++) {
pwm = &chip->pwms[i];
@@ -301,18 +302,14 @@ int pwmchip_add(struct pwm_chip *chip)
INIT_LIST_HEAD(&chip->list);
list_add(&chip->list, &pwm_chips);
- ret = 0;
+ mutex_unlock(&pwm_lock);
if (IS_ENABLED(CONFIG_OF))
of_pwmchip_add(chip);
-out:
- mutex_unlock(&pwm_lock);
-
- if (!ret)
- pwmchip_sysfs_export(chip);
+ pwmchip_sysfs_export(chip);
- return ret;
+ return 0;
}
EXPORT_SYMBOL_GPL(pwmchip_add);