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 ?