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Subject[PATCH 4.4 137/193] ASoC: rockchip: use __maybe_unused to hide st_irq_syscfg_resume
4.4-stable review patch.  If anyone has any objections, please let me know.


From: Arnd Bergmann <>

commit d8fc2198aab117a4bc16ee305caef19c4c7e7f5c upstream.

The rockchip spdif driver uses SIMPLE_DEV_PM_OPS to conditionally
set its power management functions, but we get a warning
about rk_spdif_runtime_resume being unused when CONFIG_PM is not

sound/soc/rockchip/rockchip_spdif.c:67:12: error: 'rk_spdif_runtime_resume' defined but not used [-Werror=unused-function]

This adds a __maybe_unused annotation so the compiler knows
it can silently drop it instead of warning.

Signed-off-by: Arnd Bergmann <>
Signed-off-by: Mark Brown <>
Signed-off-by: Greg Kroah-Hartman <>

sound/soc/rockchip/rockchip_spdif.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/soc/rockchip/rockchip_spdif.c
+++ b/sound/soc/rockchip/rockchip_spdif.c
@@ -54,7 +54,7 @@ static const struct of_device_id rk_spdi
MODULE_DEVICE_TABLE(of, rk_spdif_match);

-static int rk_spdif_runtime_suspend(struct device *dev)
+static int __maybe_unused rk_spdif_runtime_suspend(struct device *dev)
struct rk_spdif_dev *spdif = dev_get_drvdata(dev);

@@ -64,7 +64,7 @@ static int rk_spdif_runtime_suspend(stru
return 0;

-static int rk_spdif_runtime_resume(struct device *dev)
+static int __maybe_unused rk_spdif_runtime_resume(struct device *dev)
struct rk_spdif_dev *spdif = dev_get_drvdata(dev);
int ret;

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