Messages in this thread | | | Subject | Re: [PATCH] bitmap: simplify GENMASK(size - 1, 0) lines | From | Qian Cai <> | Date | Tue, 26 Oct 2021 11:26:14 -0400 |
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On 10/26/21 11:10 AM, Andy Shevchenko wrote: > On Tue, Oct 26, 2021 at 10:41:08AM -0400, Qian Cai wrote: >> Since "size" is an "unsigned int", the rvalue "size - 1" will still be >> "unsigned int" according to the C standard (3.2.1.5 Usual arithmetic >> conversions). Therefore, GENMASK(size - 1, 0) will always return 0UL. > > Huh?! > > Have you run test_bitmap et al., btw?
Not yet. I'll setup a VM to run it soon.
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