lkml.org 
[lkml]   [2016]   [Sep]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 2/7] leds: gpio: fix an unhandled error case in create_gpio_led
Date
gpiod_get_value_cansleep returns 0, 1, or an error code.
So far errors are not handled and treated the same as 1.
Change this to bail out if an error code is returned and
remove the double negation.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
---
v2:
- rebased due to removal of patch 2 of the original series
---
drivers/leds/leds-gpio.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/leds/leds-gpio.c b/drivers/leds/leds-gpio.c
index 3599b2e..10c851e 100644
--- a/drivers/leds/leds-gpio.c
+++ b/drivers/leds/leds-gpio.c
@@ -118,10 +118,13 @@ static int create_gpio_led(const struct gpio_led *template,
led_dat->platform_gpio_blink_set = blink_set;
led_dat->cdev.blink_set = gpio_blink_set;
}
- if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
- state = !!gpiod_get_value_cansleep(led_dat->gpiod);
- else
+ if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
+ state = gpiod_get_value_cansleep(led_dat->gpiod);
+ if (state < 0)
+ return state;
+ } else {
state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
+ }
led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
if (!template->retain_state_suspended)
led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
--
2.9.2
\
 
 \ /
  Last update: 2016-09-17 09:59    [W:0.062 / U:0.116 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site