• Arnd Bergmann's avatar
    ath9k: fix RX_STAT_INC() etc macros · 72569b7b
    Arnd Bergmann authored
    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: 03224678 ("ath9k: add counters for good and errorneous FFT/spectral frames")
    Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
    Signed-off-by: default avatarKalle Valo <kvalo@codeaurora.org>
    72569b7b
common-spectral.c 29.8 KB