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Subject: [media] atmel-isc: mark PM functions as __maybe_unused
Author:  Arnd Bergmann <>
Date:    Mon Sep 12 12:32:58 2016 -0300

The newly added atmel-isc driver uses SET_RUNTIME_PM_OPS() to
refer to its suspend/resume functions, causing a warning when
CONFIG_PM is not set:

media/platform/atmel/atmel-isc.c:1477:12: error: 'isc_runtime_resume' defined 
but not used [-Werror=unused-function]
media/platform/atmel/atmel-isc.c:1467:12: error: 'isc_runtime_suspend' defined 
but not used [-Werror=unused-function]

This adds __maybe_unused annotations to avoid the warning without
adding an error-prone #ifdef around it.

Signed-off-by: Arnd Bergmann <>
Signed-off-by: Hans Verkuil <>
Signed-off-by: Mauro Carvalho Chehab <>

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


diff --git a/drivers/media/platform/atmel/atmel-isc.c 
index ed8050d6ea71..ccfe13b7d3f8 100644
--- a/drivers/media/platform/atmel/atmel-isc.c
+++ b/drivers/media/platform/atmel/atmel-isc.c
@@ -1470,7 +1470,7 @@ static int atmel_isc_remove(struct platform_device *pdev)
        return 0;
-static int isc_runtime_suspend(struct device *dev)
+static int __maybe_unused isc_runtime_suspend(struct device *dev)
        struct isc_device *isc = dev_get_drvdata(dev);
@@ -1480,7 +1480,7 @@ static int isc_runtime_suspend(struct device *dev)
        return 0;
-static int isc_runtime_resume(struct device *dev)
+static int __maybe_unused isc_runtime_resume(struct device *dev)
        struct isc_device *isc = dev_get_drvdata(dev);
        int ret;

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