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Subject: media: renesas-ceu: mark PM functions as __maybe_unused
Author:  Arnd Bergmann <a...@arndb.de>
Date:    Wed Feb 28 18:19:37 2018 -0500

The PM runtime operations are unused when CONFIG_PM is disabled,
leading to a harmless warning:

drivers/media/platform/renesas-ceu.c:1003:12: error: 'ceu_runtime_suspend' 
defined but not used [-Werror=unused-function]
 static int ceu_runtime_suspend(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~
drivers/media/platform/renesas-ceu.c:987:12: error: 'ceu_runtime_resume' 
defined but not used [-Werror=unused-function]
 static int ceu_runtime_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~

This adds a __maybe_unused annotation to shut up the warning.

Fixes: 32e5a70dc8f4 ("media: platform: Add Renesas CEU driver")

Signed-off-by: Arnd Bergmann <a...@arndb.de>
Reviewed-by: Simon Horman <horms+rene...@verge.net.au>
Signed-off-by: Mauro Carvalho Chehab <mche...@s-opensource.com>

 drivers/media/platform/renesas-ceu.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

---

diff --git a/drivers/media/platform/renesas-ceu.c 
b/drivers/media/platform/renesas-ceu.c
index 903c05c67d91..6599dba5ab84 100644
--- a/drivers/media/platform/renesas-ceu.c
+++ b/drivers/media/platform/renesas-ceu.c
@@ -984,7 +984,7 @@ static int ceu_init_mbus_fmt(struct ceu_device *ceudev)
 /*
  * ceu_runtime_resume() - soft-reset the interface and turn sensor power on.
  */
-static int ceu_runtime_resume(struct device *dev)
+static int __maybe_unused ceu_runtime_resume(struct device *dev)
 {
        struct ceu_device *ceudev = dev_get_drvdata(dev);
        struct v4l2_subdev *v4l2_sd = ceudev->sd->v4l2_sd;
@@ -1000,7 +1000,7 @@ static int ceu_runtime_resume(struct device *dev)
  * ceu_runtime_suspend() - disable capture and interrupts and soft-reset.
  *                        Turn sensor power off.
  */
-static int ceu_runtime_suspend(struct device *dev)
+static int __maybe_unused ceu_runtime_suspend(struct device *dev)
 {
        struct ceu_device *ceudev = dev_get_drvdata(dev);
        struct v4l2_subdev *v4l2_sd = ceudev->sd->v4l2_sd;

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