[PATCH 5.14 047/168] drm/rockchip: cdn-dp-core: Make cdn_dp_core_resume __maybe_unused

From: Greg Kroah-Hartman
Date: Mon Sep 20 2021 - 14:42:01 EST


From: Arnd Bergmann <arnd@xxxxxxxx>

commit 040b8907ccf1c78d020aca29800036565d761d73 upstream.

With the new static annotation, the compiler warns when the functions
are actually unused:

drivers/gpu/drm/rockchip/cdn-dp-core.c:1123:12: error: 'cdn_dp_resume' defined but not used [-Werror=unused-function]
1123 | static int cdn_dp_resume(struct device *dev)
| ^~~~~~~~~~~~~

Mark them __maybe_unused to suppress that warning as well.

[ Not so 'new' static annotations any more, and I removed the part of
the patch that added __maybe_unused to cdn_dp_suspend(), because it's
used by the shutdown/remove code.

So only the resume function ends up possibly unused if CONFIG_PM isn't
set - Linus ]

Fixes: 7c49abb4c2f8 ("drm/rockchip: cdn-dp-core: Make cdn_dp_core_suspend/resume static")
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Reviewed-by: Enric Balletbo i Serra <enric.balletbo@xxxxxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rockchip/cdn-dp-core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -1123,7 +1123,7 @@ static int cdn_dp_suspend(struct device
return ret;
}

-static int cdn_dp_resume(struct device *dev)
+static __maybe_unused int cdn_dp_resume(struct device *dev)
{
struct cdn_dp_device *dp = dev_get_drvdata(dev);