From: Sam Ravnborg <sam@xxxxxxxxxxxx> [ 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@xxxxxxxxxxxx Signed-off-by: Sam Ravnborg <sam@xxxxxxxxxxxx> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Cc: Yoshinori Sato <ysato@xxxxxxxxxxxxxxxxxxxx> Cc: Rich Felker <dalias@xxxxxxxx> Cc: Will Deacon <will.deacon@xxxxxxx> Cc: Mark Brown <broonie@xxxxxxxxxx> Cc: Inki Dae <inki.dae@xxxxxxxxxxx> Cc: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 4f7f235f15f8..e01fbfdbc78c 100644 --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -372,7 +372,11 @@ 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 -- 2.20.1