• Felix Fietkau's avatar
    ath9k_hw: force rx chainmask to 7 on AR9100 · 598cdd52
    Felix Fietkau authored
    
    
    Most AR9100 devices already have a chainmask of 7 (three antennas), however
    on the ones that don't (rx and tx chainmask set to 5), problems with IQ
    mismatch calibration have been observed.
    This shows up as tx queue hangs (and subsequent hardware resets) if traffic
    is sent during this type of calibration.
    Forcing the rx chainmask to 7 fixes the calibration issues with no apparent
    negative side effects on throughput and stability.
    Signed-off-by: default avatarFelix Fietkau <nbd@openwrt.org>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    598cdd52