• Stephen Hemminger's avatar
    vmbus: re-enable channel tasklet · 6463a457
    Stephen Hemminger authored
    This problem shows up in 4.11 when netvsc driver is removed and reloaded.
    The problem is that the channel is closed during module removal and the
    tasklet for processing responses is disabled. When module is reloaded
    the channel is reopened but the tasklet is marked as disabled.
    The fix is to re-enable tasklet at the end of close which gets it back
    to the initial state.
    
    The issue is less urgent in 4.12 since network driver now uses NAPI
    and not the tasklet; and other VMBUS devices are rarely unloaded/reloaded.
    
    Fixes: dad72a1d
    
     ("vmbus: remove hv_event_tasklet_disable/enable")
    Signed-off-by: default avatarStephen Hemminger <sthemmin@microsoft.com>
    Signed-off-by: default avatarK. Y. Srinivasan <kys@microsoft.com>
    Cc: stable@vger.kernel.org
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    6463a457