[PATCH] SH: Convert iounmap() macros to inline functions

[PATCH] SH: Convert iounmap() macros to inline functions

[Kuninori Morimoto]

From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>

Macro iounmap() do nothing, but that results in
unused variable warnings all over the place.
This patch convert it to inline to avoid warning

Fixes: 98c90e5ea34e9 ("sh: remove __iounmap")
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 arch/sh/include/asm/io.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 1495489..351a0a9 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -328,7 +328,7 @@ __ioremap_mode(phys_addr_t offset, unsigned long size, pgprot_t prot)
 #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)
-- 
2.7.4

Re: [PATCH] SH: Convert iounmap() macros to inline functions

[Sam Ravnborg]

Hi Kuninori

On Tue, Dec 17, 2019 at 03:48:57PM +0900, Kuninori Morimoto wrote:
> 
> From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> 
> Macro iounmap() do nothing, but that results in
> unused variable warnings all over the place.
> This patch convert it to inline to avoid warning

To help other people with the same warning it is always a good idea to
include the warning you fix in the changelog.

With this fixed:
Acked-by: Sam Ravnborg <sam@ravnborg.org>

> 
> Fixes: 98c90e5ea34e9 ("sh: remove __iounmap")
> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> ---
>  arch/sh/include/asm/io.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
> index 1495489..351a0a9 100644
> --- a/arch/sh/include/asm/io.h
> +++ b/arch/sh/include/asm/io.h
> @@ -328,7 +328,7 @@ __ioremap_mode(phys_addr_t offset, unsigned long size, pgprot_t prot)
>  #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)
> -- 
> 2.7.4

Re: [PATCH] SH: Convert iounmap() macros to inline functions

[Kuninori Morimoto]

Hi Sam

Thank you for your review

> > From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
> > 
> > Macro iounmap() do nothing, but that results in
> > unused variable warnings all over the place.
> > This patch convert it to inline to avoid warning
> 
> To help other people with the same warning it is always a good idea to
> include the warning you fix in the changelog.
>
> With this fixed:
> Acked-by: Sam Ravnborg <sam@ravnborg.org>

will fix and post v2, Thanks

Thank you for your help !!
Best regards
---
Kuninori Morimoto