• Daniel Drake's avatar
    libertas: detect TX lockups and reset hardware · 8f641d93
    Daniel Drake authored
    Recent patches added support for resetting the SD8686 hardware when
    commands time out, which seems to happen quite frequently soon after
    resuming the system from a Wake-on-WLAN-triggered resume.
    
    At http://dev.laptop.org/ticket/10969 we see the same thing happen
    with transmits. In this case, the hardware will fail to respond to
    a frame passed for transmission, and libertas (correctly) will block
    all further commands and transmissions as the hardware can only
    deal with one thing at a time. This results in a lockup while the
    system waits indefinitely for the dead card to respond.
    
    Hook up a TX lockup timer to detect this and reset the hardware.
    Signed-off-by: default avatarDaniel Drake <dsd@laptop.org>
    Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
    8f641d93
dev.h 4.77 KB