On 18 April 2016 at 13:36, Daniel Vetter <daniel@xxxxxxxx> wrote: > On Mon, Apr 18, 2016 at 12:09:51PM +0100, Lionel Landwerlin wrote: >> Ping? >> >> On 22/03/16 14:10, Lionel Landwerlin wrote: >> >When extracting the value at full precision (16 bits), no need to >> >round the value. >> > >> >This was spotted by Jani when running sparse. Unfortunately this fix >> >doesn't get rid of the warning. > > It sounded like no bug, and the patch itself fails to appease sparse. And > I didn't check what's upsetting sparse itself, so figured "nothing to do > here until a real fix shows up". > According to the C99 standard a left shift with negative value is undefined. And we're hitting this case at full precision ;-) > Should I do something here? Having the above information in, optionally with the warning message in place of the current commit message would be recommended imho. After all the patch is a definite fix, even if I personally I'd write the inline helper via a switch (makes things dead obvious). Regardless, Reviewed-by: Emil Velikov <emil.velikov@xxxxxxxxxxxxx> -Emil _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
