On Wed, Apr 11, 2018 at 03:17:10PM +0800, Jia-Ju Bai wrote: > > > On 2018/4/11 14:41, Greg KH wrote: > > On Wed, Apr 11, 2018 at 09:29:34AM +0800, Jia-Ju Bai wrote: > > > stir421x_fw_upload() is never called in atomic context. > > > > > > The call chain ending up at stir421x_fw_upload() is: > > >  stir421x_fw_upload() <- stir421x_patch_device() <- irda_usb_probe() > > > > > > irda_usb_probe() is set as ".probe" in struct usb_driver. > > > This function is not called in atomic context. > > > > > > Despite never getting called from atomic context, stir421x_fw_upload() > > > calls mdelay() to busily wait. > > > This is not necessary and can be replaced with usleep_range() to > > > avoid busy waiting. > > > > > > This is found by a static analysis tool named DCNS written by myself. > > > And I also manually check it. > > > > > > Signed-off-by: Jia-Ju Bai <baijiaju1...@gmail.com> > > > --- > > > drivers/staging/irda/drivers/irda-usb.c | 2 +- > > > 1 file changed, 1 insertion(+), 1 deletion(-) > > Please, at the very least, work off of Linus's tree. There is no > > drivers/staging/irda/ anymore :) > > > > Okay, sorry. > Could you please recommend me a right tree or its git address?
Have you looked in the MAINTAINERS file? Worst case, always use linux-next. greg k-h