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Re: [PATCH v4 2/3] display/blizzard: Remove redundant statement in blizz
From: |
Laurent Vivier |
Subject: |
Re: [PATCH v4 2/3] display/blizzard: Remove redundant statement in blizzard_draw_line16_32() |
Date: |
Tue, 24 Mar 2020 09:40:28 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.6.0 |
Le 24/03/2020 à 09:38, Laurent Vivier a écrit :
> Le 24/03/2020 à 09:22, Chen Qun a écrit :
>> Clang static code analyzer show warning:
>> hw/display/blizzard.c:940:9: warning: Value stored to 'data' is never read
>> data >>= 5;
>> ^ ~
>> Reported-by: Euler Robot <address@hidden>
>> Signed-off-by: Chen Qun <address@hidden>
>> ---
>> Cc: Andrzej Zaborowski <address@hidden>
>> Cc: Peter Maydell <address@hidden>
>> ---
>> hw/display/blizzard.c | 1 -
>> 1 file changed, 1 deletion(-)
>>
>> diff --git a/hw/display/blizzard.c b/hw/display/blizzard.c
>> index 359e399c2a..62517bdf75 100644
>> --- a/hw/display/blizzard.c
>> +++ b/hw/display/blizzard.c
>> @@ -937,7 +937,6 @@ static void blizzard_draw_line16_32(uint32_t *dest,
>> g = (data & 0x3f) << 2;
>> data >>= 6;
>> r = (data & 0x1f) << 3;
>> - data >>= 5;
>> *dest++ = rgb_to_pixel32(r, g, b);
>> }
>> }
>>
>
> Perhaps it would be clearer to use extract32() to compute r, g and b?
in fact extract16() as data is uint16_t...
Thanks,
Laurent