Jia-Ju Bai <baijiaju1...@163.com> wrote: > The driver may sleep under a spin lock, and the function call path is: > cw1200_tx_confirm_cb (acquire the lock by spin_lock) > __cw1200_cqm_bssloss_sm > cancel_work_sync --> may sleep > > cw1200_cqm_bssloss_sm > __cw1200_cqm_bssloss_sm > cancel_work_sync --> may sleep > > To fix it, the lock is released before cancel_work_sync, and the lock > is acquired again after this function. > > Signed-off-by: Jia-Ju Bai <baijiaju1...@163.com>
I assume that you haven't tested this on a real device and only compile tested. You should mention that in the commit log. Releasing a lock held by calling function is evil. Did you do any lock analysis or are you just blindly releasing locks to fix a warning in your tool? Also I would like to have an ack from a reviewer before I can take patches like this. Patch set to Changes Requested. -- https://patchwork.kernel.org/patch/9758613/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
