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[PATCH 1/2] [media] vsp1: use __maybe_unused for PM handlers

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  [PATCH 1/2] [media] vsp1: use __maybe_unused for PM handlers Arnd Bergmann <arnd@arndb.de> - 2016-06-30 14:30 +0200
    [PATCH 2/2] [media] vsp1: clarify FCP dependency Arnd Bergmann <arnd@arndb.de> - 2016-06-30 14:30 +0200

#1434507 — [PATCH 1/2] [media] vsp1: use __maybe_unused for PM handlers

Building without CONFIG_PM results in a harmless warning from
slightly incorrect #ifdef guards:

drivers/media/platform/vsp1/vsp1_drv.c:525:12: error: 'vsp1_pm_runtime_resume' defined but not used [-Werror=unused-function]
drivers/media/platform/vsp1/vsp1_drv.c:516:12: error: 'vsp1_pm_runtime_suspend' defined but not used [-Werror=unused-function]

This removes the existing #ifdef and instead marks all four
PM functions as __maybe_unused.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 1e6af546ee66 ("[media] v4l: vsp1: Implement runtime PM support")
---
 drivers/media/platform/vsp1/vsp1_drv.c | 10 ++++------
 1 file changed, 4 insertions(+), 6 deletions(-)

diff --git a/drivers/media/platform/vsp1/vsp1_drv.c b/drivers/media/platform/vsp1/vsp1_drv.c
index e655639af7e2..0c7fd43d6fb7 100644
--- a/drivers/media/platform/vsp1/vsp1_drv.c
+++ b/drivers/media/platform/vsp1/vsp1_drv.c
@@ -491,8 +491,7 @@ void vsp1_device_put(struct vsp1_device *vsp1)
  * Power Management
  */
 
-#ifdef CONFIG_PM_SLEEP
-static int vsp1_pm_suspend(struct device *dev)
+static int __maybe_unused vsp1_pm_suspend(struct device *dev)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 
@@ -502,7 +501,7 @@ static int vsp1_pm_suspend(struct device *dev)
 	return 0;
 }
 
-static int vsp1_pm_resume(struct device *dev)
+static int __maybe_unused vsp1_pm_resume(struct device *dev)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 
@@ -511,9 +510,8 @@ static int vsp1_pm_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static int vsp1_pm_runtime_suspend(struct device *dev)
+static int __maybe_unused vsp1_pm_runtime_suspend(struct device *dev)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 
@@ -522,7 +520,7 @@ static int vsp1_pm_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int vsp1_pm_runtime_resume(struct device *dev)
+static int __maybe_unused vsp1_pm_runtime_resume(struct device *dev)
 {
 	struct vsp1_device *vsp1 = dev_get_drvdata(dev);
 	int ret;
-- 
2.9.0

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#1434510 — [PATCH 2/2] [media] vsp1: clarify FCP dependency

The newly added FCP support in the vsp1 driver causes a link error
when CONFIG_RENESAS_FCP=m, since it's not reachable by built-in code:

drivers/media/built-in.o: In function `vsp1_remove':
:(.text+0xdeca0): undefined reference to `rcar_fcp_put'
drivers/media/built-in.o: In function `vsp1_probe':
:(.text+0xdef44): undefined reference to `rcar_fcp_get'

We already have a conditional dependency on FCP that requires
it for ARM64, so for all others we just have to prevent setting
RENESAS_VSP1=y when RENESAS_FCP=m by extending the FCP dependency.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 94fcdf829793 ("[media] v4l: vsp1: Add FCP support")
---
 drivers/media/platform/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig
index 9d0a3ffe36d2..8b6ac7d08289 100644
--- a/drivers/media/platform/Kconfig
+++ b/drivers/media/platform/Kconfig
@@ -265,7 +265,7 @@ config VIDEO_RENESAS_VSP1
 	tristate "Renesas VSP1 Video Processing Engine"
 	depends on VIDEO_V4L2 && VIDEO_V4L2_SUBDEV_API && HAS_DMA
 	depends on (ARCH_RENESAS && OF) || COMPILE_TEST
-	depends on !ARM64 || VIDEO_RENESAS_FCP
+	depends on (!ARM64 && !VIDEO_RENESAS_FCP) || VIDEO_RENESAS_FCP
 	select VIDEOBUF2_DMA_CONTIG
 	---help---
 	  This is a V4L2 driver for the Renesas VSP1 video processing engine.
-- 
2.9.0

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