Hi Andy, Laurent On 24/02/2021 10:18, Andy Shevchenko wrote: > On Wed, Feb 24, 2021 at 12:16 PM Laurent Pinchart > <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote: >> On Tue, Feb 23, 2021 at 10:36:18PM +0000, Daniel Scally wrote: >>> On 23/02/2021 20:04, Laurent Pinchart wrote: > ... > >>>>> + get_device(&int3472->sensor->dev); >>>> I see no corresponding put_device(), am I missing something ? I'm also >>>> not sure why this is needed. >>> The put is acpi_dev_put() in skl_int3472_discrete_remove(); there seems >>> to be no acpi_dev_get() for some reason. We use the sensor acpi_device >>> to get the clock frequency, and to fetch the sensor module string, so I >>> thought it ought to hold a reference on those grounds. >> Shouldn't acpi_dev_get_dependent_dev() increase the reference count >> then, instead of doing it manually here ? > That's what I expected as well. > We have plenty of acpi_dev_get_*() and they do increase the reference > counter one way or the other. > Okedokey, I'll move the get() to that function and drop it from here.