]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commitdiff
platform/x86: fujitsu-laptop: rework logolamp_set() to properly handle errors
authorMichał Kępień <kernel@kempniu.pl>
Mon, 9 Jan 2017 13:14:16 +0000 (14:14 +0100)
committerDarren Hart <dvhart@linux.intel.com>
Sat, 4 Feb 2017 01:46:38 +0000 (02:46 +0100)
Potential errors returned by some call_fext_func() calls inside
logolamp_set() are currently ignored.  Rework logolamp_set() to properly
handle them.  This causes one more call_fext_func() call to be made in
the LED_OFF case, though one could argue that this is logically the
right thing to do (even though the extra call is not needed to shut the
LED off).

Signed-off-by: Michał Kępień <kernel@kempniu.pl>
Acked-by: Jonathan Woithe <jwoithe@just42.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
drivers/platform/x86/fujitsu-laptop.c

index b725a907a91f102ac29a1e0a95c5cb8f9e94d5e3..34b8481fb0ed00aecef1c01edf6bb147a2497061 100644 (file)
@@ -271,15 +271,20 @@ static int call_fext_func(int cmd, int arg0, int arg1, int arg2)
 static int logolamp_set(struct led_classdev *cdev,
                               enum led_brightness brightness)
 {
-       if (brightness >= LED_FULL) {
-               call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
-               return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_ON);
-       } else if (brightness >= LED_HALF) {
-               call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_ON);
-               return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, FUNC_LED_OFF);
-       } else {
-               return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, FUNC_LED_OFF);
-       }
+       int poweron = FUNC_LED_ON, always = FUNC_LED_ON;
+       int ret;
+
+       if (brightness < LED_HALF)
+               poweron = FUNC_LED_OFF;
+
+       if (brightness < LED_FULL)
+               always = FUNC_LED_OFF;
+
+       ret = call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_POWERON, poweron);
+       if (ret < 0)
+               return ret;
+
+       return call_fext_func(FUNC_LEDS, 0x1, LOGOLAMP_ALWAYS, always);
 }
 
 static int kblamps_set(struct led_classdev *cdev,