leds: leds-pwm: return proper error if pwm_request failed

Return PTR_ERR(led_dat->pwm) instead of 0 if pwm_request failed

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Cc: Luotao Fu <l.fu@pengutronix.de>
Cc: Reviewed-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/leds/leds-pwm.c b/drivers/leds/leds-pwm.c
index da3fa8dcdf5b924f71a7f117c05009f0fc671514..666daf77872e56239bbf59a002c180593996ae7a 100644 (file)
--- a/drivers/leds/leds-pwm.c
+++ b/drivers/leds/leds-pwm.c
@@ -69,6 +69,7 @@ static int led_pwm_probe(struct platform_device *pdev)
                led_dat->pwm = pwm_request(cur_led->pwm_id,
                                cur_led->name);
                if (IS_ERR(led_dat->pwm)) {
+                       ret = PTR_ERR(led_dat->pwm);
                        dev_err(&pdev->dev, "unable to request PWM %d\n",
                                        cur_led->pwm_id);
                        goto err;