[ARM] 5141/1: PWM: pwm_request() should return an PTR_ERR() instead of NULL.
Make the return of pwm_request() be more informative than just
being NULL on error by using PTR_ERR() to respond with an
approriate error.
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/video/backlight/pwm_bl.c b/drivers/video/backlight/pwm_bl.c
index 8346dfc..6338d0e 100644
--- a/drivers/video/backlight/pwm_bl.c
+++ b/drivers/video/backlight/pwm_bl.c
@@ -87,9 +87,9 @@
pb->notify = data->notify;
pb->pwm = pwm_request(data->pwm_id, "backlight");
- if (pb->pwm == NULL) {
+ if (IS_ERR(pb->pwm)) {
dev_err(&pdev->dev, "unable to request PWM for backlight\n");
- ret = -EBUSY;
+ ret = PTR_ERR(pb->pwm);
goto err_pwm;
}
