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Subject[PATCH 3/9] staging: media: atomisp: annotate an unused function
atomisp_mrfld_power() has no more callers and produces
a warning:

drivers/staging/media/atomisp/pci/atomisp_v4l2.c:764:12: error: unused function 'atomisp_mrfld_power' [-Werror,-Wunused-function]

Mark the function as unused while the PM code is being
debugged, expecting that it will be used again in the
future and should not just be removed.

Fixes: 95d1f398c4dc ("media: atomisp: keep the ISP powered on when setting it")
Signed-off-by: Arnd Bergmann <>
drivers/staging/media/atomisp/pci/atomisp_v4l2.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
index 694268d133c0..10abb35ba0e0 100644
--- a/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
+++ b/drivers/staging/media/atomisp/pci/atomisp_v4l2.c
@@ -761,7 +761,8 @@ static void punit_ddr_dvfs_enable(bool enable)
pr_info("DDR DVFS, door bell is not cleared within 3ms\n");

-static int atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
+static __attribute__((unused)) int
+atomisp_mrfld_power(struct atomisp_device *isp, bool enable)
unsigned long timeout;
u32 val = enable ? MRFLD_ISPSSPM0_IUNIT_POWER_ON :
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