v2: Add smp_mb__after_atomic() for patch #1. v1: Scheduling the napi during the following periods would let it be ignored. And the events wouldn't be handled until next napi_schedule() is called.
1. after napi_disable and before napi_enable(). 2. after all actions of napi function is completed and before calling napi_complete(). If no next napi_schedule() is called, tx or rx would stop working. In order to avoid these situations, the followings solutions are applied. 1. prevent start_xmit() from calling napi_schedule() during runtime suspend or after napi_disable(). 2. re-schedule the napi for tx if it is necessary. 3. check if any rx is finished or not after napi_enable(). Hayes Wang (4): r8152: avoid start_xmit to call napi_schedule during autosuspend r8152: avoid start_xmit to schedule napi when napi is disabled r8152: re-schedule napi for tx r8152: check rx after napi is enabled drivers/net/usb/r8152.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-) -- 2.7.4
