Hi Uwe, On Wed, Nov 29, 2023 at 10:51:37AM +0100, Uwe Kleine-König wrote: > On Wed, Nov 29, 2023 at 02:39:55AM +0200, Laurent Pinchart wrote: > > On Thu, Nov 23, 2023 at 06:54:27PM +0100, Uwe Kleine-König wrote: > > > pm_runtime_resume_and_get() already drops the runtime PM usage counter > > > in the error case. So a call to pm_runtime_put_sync() can be dropped. > > > > > > Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> > > > > I wonder if checkpatch should warn about usage of pm_runtime_get_sync(). > > It should not warn in general. There are cases where > pm_runtime_get_sync() is the right function to use. See for example Sure, the function most likely has some valid use cases (otherwise it should just be removed), but I think those are are a minority. I was just thinking out loud anyway. > commit aec488051633 ("crypto: stm32 - Properly handle pm_runtime_get > failing"). I don't know much about that device, but wouldn't the best option be to avoid resuming the device at remove time ? In any case, that's getting out of topic for the sn65dsi86 :-) -- Regards, Laurent Pinchart