From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> commit 4580ba4ad2e6b8ddaada3db61d179d4dfac12047 upstream. Macro iounmap() do nothing, but that results in unused variable warnings all over the place. This patch convert it to inline to avoid warning We will get this warning without this patch ${LINUX}/drivers/thermal/broadcom/ns-thermal.c:78:21: \ warning: unused variable 'ns_thermal' [-Wunused-variable] struct ns_thermal *ns_thermal = platform_get_drvdata(pdev); ^~~~~~~~~~ Fixes: 98c90e5ea34e9 ("sh: remove __iounmap") Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> Signed-off-by: Rich Felker <dalias@xxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/sh/include/asm/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/sh/include/asm/io.h +++ b/arch/sh/include/asm/io.h @@ -328,7 +328,7 @@ __ioremap_mode(phys_addr_t offset, unsig #else #define __ioremap(offset, size, prot) ((void __iomem *)(offset)) #define __ioremap_mode(offset, size, prot) ((void __iomem *)(offset)) -#define iounmap(addr) do { } while (0) +static inline void iounmap(void __iomem *addr) {} #endif /* CONFIG_MMU */ static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size)