media: staging/intel-ipu3: mark PM function as __maybe_unused
[ Upstream commit 948dff7c ] The imgu_rpm_dummy_cb() looks like an API misuse that is explained in the comment above it. Aside from that, it also causes a warning when power management support is disabled: drivers/staging/media/ipu3/ipu3.c:794:12: error: 'imgu_rpm_dummy_cb' defined but not used [-Werror=unused-function] The warning is at least easy to fix by marking the function as __maybe_unused. Fixes: 7fc7af64 ("media: staging/intel-ipu3: Add imgu top level pci device driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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