Re: [PATCH v2] rtw88: Make RA_MASK macros ULL
From: Kalle Valo
Date: Thu May 02 2019 - 12:27:22 EST
Nathan Chancellor <natechancellor@xxxxxxxxx> wrote:
> Clang warns about the definitions of these macros (full warnings trimmed
> for brevity):
>
> drivers/net/wireless/realtek/rtw88/main.c:524:15: warning: signed shift
> result (0x3FF00000000) requires 43 bits to represent, but 'int' only has
> 32 bits [-Wshift-overflow]
> ra_mask &= RA_MASK_VHT_RATES | RA_MASK_OFDM_IN_VHT;
> ^~~~~~~~~~~~~~~~~
> drivers/net/wireless/realtek/rtw88/main.c:527:15: warning: signed shift
> result (0xFF0000000) requires 37 bits to represent, but 'int' only has
> 32 bits [-Wshift-overflow]
> ra_mask &= RA_MASK_HT_RATES | RA_MASK_OFDM_IN_HT_5G;
> ^~~~~~~~~~~~~~~~
>
> Given that these are all used with ra_mask, which is of type u64, we can
> just declare the macros to be ULL as well.
>
> Fixes: e3037485c68e ("rtw88: new Realtek 802.11ac driver")
> Link: https://github.com/ClangBuiltLinux/linux/issues/467
> Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx>
Patch applied to wireless-drivers-next.git, thanks.
237b47efcdbc rtw88: Make RA_MASK macros ULL
--
https://patchwork.kernel.org/patch/10927105/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches