From: Sam Ravnborg sam@ravnborg.org
[ Upstream commit 733f0025f0fb43e382b84db0930ae502099b7e62 ]
When building drm/exynos for sh, as part of an allmodconfig build, the following warning triggered:
exynos7_drm_decon.c: In function `decon_remove': exynos7_drm_decon.c:769:24: warning: unused variable `ctx' struct decon_context *ctx = dev_get_drvdata(&pdev->dev);
The ctx variable is only used as argument to iounmap().
In sh - allmodconfig CONFIG_MMU is not defined so it ended up in:
#define __iounmap(addr) do { } while (0) #define iounmap __iounmap
Fix the warning by introducing a static inline function for iounmap.
This is similar to several other architectures.
Link: http://lkml.kernel.org/r/20190622114208.24427-1-sam@ravnborg.org Signed-off-by: Sam Ravnborg sam@ravnborg.org Reviewed-by: Geert Uytterhoeven geert+renesas@glider.be Cc: Yoshinori Sato ysato@users.sourceforge.jp Cc: Rich Felker dalias@libc.org Cc: Will Deacon will.deacon@arm.com Cc: Mark Brown broonie@kernel.org Cc: Inki Dae inki.dae@samsung.com Cc: Krzysztof Kozlowski krzk@kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- arch/sh/include/asm/io.h | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h index c28e37a344ad..ac0561960c52 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -369,7 +369,11 @@ static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
#define ioremap_nocache ioremap #define ioremap_uc ioremap -#define iounmap __iounmap + +static inline void iounmap(void __iomem *addr) +{ + __iounmap(addr); +}
/* * Convert a physical pointer to a virtual kernel pointer for /dev/mem