MLK-22309-2 media: mxc-mipi-csi2: mark PM functions as __maybe_unused

fix build warnings if CONFIG_PM_SLEEP is disabled.

drivers/media/platform/imx8/mxc-mipi-csi2_yav.c:703:12: warning: 'mipi_csi2_pm_resume' defined but not used [-Wunused-function]
 static int mipi_csi2_pm_resume(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~
drivers/media/platform/imx8/mxc-mipi-csi2_yav.c:685:12: warning: 'mipi_csi2_pm_suspend' defined but not used [-Wunused-function]
 static int mipi_csi2_pm_suspend(struct device *dev)
            ^~~~~~~~~~~~~~~~~~~~

Signed-off-by: Robby Cai <robby.cai@nxp.com>
Reviewed-by: Sandor Yu <Sandor.yu@nxp.com>

diff --git a/drivers/media/platform/imx8/mxc-mipi-csi2_yav.c b/drivers/media/platform/imx8/mxc-mipi-csi2_yav.c
index 3f70a69..5b45c9e 100644 (file)
--- a/drivers/media/platform/imx8/mxc-mipi-csi2_yav.c
+++ b/drivers/media/platform/imx8/mxc-mipi-csi2_yav.c
@@ -659,7 +659,7 @@ static int mipi_csi2_remove(struct platform_device *pdev)
        return 0;
 }
 
-static int mipi_csi2_pm_runtime_resume(struct device *dev)
+static int __maybe_unused mipi_csi2_pm_runtime_resume(struct device *dev)
 {
        struct mxc_mipi_csi2_dev *csi2dev = dev_get_drvdata(dev);
        int ret;
@@ -673,7 +673,7 @@ static int mipi_csi2_pm_runtime_resume(struct device *dev)
        return 0;
 }
 
-static int mipi_csi2_runtime_pm_suspend(struct device *dev)
+static int __maybe_unused mipi_csi2_runtime_pm_suspend(struct device *dev)
 {
        struct mxc_mipi_csi2_dev *csi2dev = dev_get_drvdata(dev);
 
@@ -682,7 +682,7 @@ static int mipi_csi2_runtime_pm_suspend(struct device *dev)
        return 0;
 }
 
-static int mipi_csi2_pm_suspend(struct device *dev)
+static int __maybe_unused mipi_csi2_pm_suspend(struct device *dev)
 {
        struct mxc_mipi_csi2_dev *csi2dev = dev_get_drvdata(dev);
 
@@ -700,7 +700,7 @@ static int mipi_csi2_pm_suspend(struct device *dev)
        return 0;
 }
 
-static int mipi_csi2_pm_resume(struct device *dev)
+static int __maybe_unused mipi_csi2_pm_resume(struct device *dev)
 {
        struct mxc_mipi_csi2_dev *csi2dev = dev_get_drvdata(dev);
        int ret;