On Tue, 21 Aug 2018 20:06:28 +0300 "Matwey V. Kornilov" <matwey@xxxxxxxxxx> wrote: > There were reports that PWC-based webcams don't work at some > embedded ARM platforms. [1] Isochronous transfer handler seems to > work too long leading to the issues in MUSB USB host subsystem. > Also note, that urb->giveback() handlers are still called with > disabled interrupts. In order to be able to measure performance of > PWC driver, traces are introduced in URB handler section. > > [1] https://www.spinics.net/lists/linux-usb/msg165735.html > > Signed-off-by: Matwey V. Kornilov <matwey@xxxxxxxxxx> > --- > >From a tracing perspective, Reviewed-by: Steven Rostedt (VMware) <rostedt@xxxxxxxxxxx> -- Steve
