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SubjectRe: [PATCH v2 1/2] platform/x86: fujitsu-laptop: rework logolamp_set() to properly handle errors
On Mon, Jan 9, 2017 at 3:35 PM, Jonathan Woithe <jwoithe@just42.net> wrote:
> On Mon, Jan 09, 2017 at 02:14:16PM +0100, Micha?? K??pie?? wrote:
>> 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: Micha?? K??pie?? <kernel@kempniu.pl>
>
> Acked-by: Jonathan Woithe <jwoithe@just42.net>

Both patches pushed to testing, thanks!

>
>> ---
>> Changes from v1:
>>
>> - Decrease indentation by rearranging logical conditions.
>> - Split variable declarations into two lines.
>>
>> drivers/platform/x86/fujitsu-laptop.c | 23 ++++++++++++++---------
>> 1 file changed, 14 insertions(+), 9 deletions(-)
>>
>> diff --git a/drivers/platform/x86/fujitsu-laptop.c b/drivers/platform/x86/fujitsu-laptop.c
>> index b725a907a91f..34b8481fb0ed 100644
>> --- a/drivers/platform/x86/fujitsu-laptop.c
>> +++ b/drivers/platform/x86/fujitsu-laptop.c
>> @@ -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,
>> --
>> 2.11.0
>>
>> --
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>
> --



--
With Best Regards,
Andy Shevchenko

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