Re: [PATCH] leds-ot200: Fix error caused by shifted mask

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Christian Gmeiner, MSc


2013/1/23 GMEINER.Christian <C.GMEINER@xxxxxxxxxxxxx>:
>> -----Ursprüngliche Nachricht-----
>> Von: Christian Gmeiner [mailto:christian.gmeiner@xxxxxxxxx]
>> Gesendet: Mittwoch, 23. Januar 2013 09:11
>> An: linux-next@xxxxxxxxxxxxxxx; akpm@xxxxxxxxxxxxxxxxxxxx;
>> rpurdie@xxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; GMEINER.Christian
>> Cc: Christian Gmeiner
>> Betreff: [PATCH] leds-ot200: Fix error caused by shifted mask
>>
>> During the development of this driver an in-house register documentation
>> was used. The last weeks some integration tests were done and this problem
>> was found. It turned out that the released register documentation is wrong.
>>
>> The fix is very simple: shift all masks by one.
>>
>> Signed-off-by: Christian Gmeiner <christian.gmeiner@xxxxxxxxx>
>
>
> Acked-by: Christian Gmeiner <c.gmeiner@xxxxxxxxxxxxx>
> Tested-by: Christian Gmeiner <c.gmeiner@xxxxxxxxxxxxx>
>
>> ---
>>  drivers/leds/leds-ot200.c | 14 +++++++-------
>>  1 file changed, 7 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/leds/leds-ot200.c b/drivers/leds/leds-ot200.c index
>> ee14662..98cae52 100644
>> --- a/drivers/leds/leds-ot200.c
>> +++ b/drivers/leds/leds-ot200.c
>> @@ -47,37 +47,37 @@ static struct ot200_led leds[] = {
>>       {
>>               .name = "led_1",
>>               .port = 0x49,
>> -             .mask = BIT(7),
>> +             .mask = BIT(6),
>>       },
>>       {
>>               .name = "led_2",
>>               .port = 0x49,
>> -             .mask = BIT(6),
>> +             .mask = BIT(5),
>>       },
>>       {
>>               .name = "led_3",
>>               .port = 0x49,
>> -             .mask = BIT(5),
>> +             .mask = BIT(4),
>>       },
>>       {
>>               .name = "led_4",
>>               .port = 0x49,
>> -             .mask = BIT(4),
>> +             .mask = BIT(3),
>>       },
>>       {
>>               .name = "led_5",
>>               .port = 0x49,
>> -             .mask = BIT(3),
>> +             .mask = BIT(2),
>>       },
>>       {
>>               .name = "led_6",
>>               .port = 0x49,
>> -             .mask = BIT(2),
>> +             .mask = BIT(1),
>>       },
>>       {
>>               .name = "led_7",
>>               .port = 0x49,
>> -             .mask = BIT(1),
>> +             .mask = BIT(0),
>>       }
>>  };
>>
>> --
>> 1.7.12.2.421.g261b511
>
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