Arnd Bergmann <arnd@xxxxxxxx> wrote:
> A couple of macros that deal with statistics in ath9k rely on the
> declaration of the 'sc' variable, which they dereference.
>
> However, when the statistics are disabled, the new instance in
> ath_cmn_process_fft() causes a warning for an unused variable:
>
> drivers/net/wireless/ath/ath9k/common-spectral.c: In function 'ath_cmn_process_fft':
> drivers/net/wireless/ath/ath9k/common-spectral.c:474:20: error: unused variable 'sc' [-Werror=unused-variable]
>
> It's better if those macros only operate on their arguments instead of
> known variable names, and adding a cast to (void) kills off that warning.
>
> Fixes: 03224678c013 ("ath9k: add counters for good and errorneous FFT/spectral frames")
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Patch applied to ath-next branch of ath.git, thanks.
72569b7be461 ath9k: fix RX_STAT_INC() etc macros
--
https://patchwork.kernel.org/patch/10632911/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
