Hi Arnd,
Thank you for your patch.
I think it's better to add switch CONFIG_PM, but the PM feature is a
must, or the ISC can not work, maybe the best choice is to add 'depends
on PM' in Kconfig.
#ifdef CONFIG_PM
isc_runtime_suspend
{
XXX
}
isc_runtime_resume
{
XXX
}
static const struct dev_pm_ops atmel_isc_dev_pm_ops = {
SET_RUNTIME_PM_OPS(isc_runtime_suspend, isc_runtime_resume, NULL)
};
#define ATMEL_ISC_PM_OPS (&atmel_isc_dev_pm_ops)
#else
#define ATMEL_ISC_PM_OPS NULL
#endif
static struct platform_driver atmel_isc_driver = {
.probe = atmel_isc_probe,
.remove = atmel_isc_remove,
.driver = {
.name = ATMEL_ISC_NAME,
.pm = ATMEL_ISC_PM_OPS,
.of_match_table = of_match_ptr(atmel_isc_of_match),
},
};
On 9/12/2016 23:32, Arnd Bergmann wrote:
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 <a...@arndb.de>
---
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
b/drivers/media/platform/atmel/atmel-isc.c
index db6773de92f0..a9ab7ae89f04 100644
--- a/drivers/media/platform/atmel/atmel-isc.c
+++ b/drivers/media/platform/atmel/atmel-isc.c
@@ -1464,7 +1464,7 @@ 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);
@@ -1474,7 +1474,7 @@ 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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