linux-kernel - Re: [PATCH v3 6/6] fbdev: Rename fb

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Date:   Tue, 2 May 2023 22:08:13 +0200
From:   Sam Ravnborg <sam@...nborg.org>
To:     Thomas Zimmermann <tzimmermann@...e.de>
Cc:     deller@....de, geert@...ux-m68k.org, javierm@...hat.com,
        daniel@...ll.ch, vgupta@...nel.org, chenhuacai@...nel.org,
        kernel@...0n.name, davem@...emloft.net,
        James.Bottomley@...senpartnership.com, arnd@...db.de,
        linux-fbdev@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-arch@...r.kernel.org, linux-snps-arc@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-ia64@...r.kernel.org,
        loongarch@...ts.linux.dev, linux-m68k@...ts.linux-m68k.org,
        sparclinux@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-parisc@...r.kernel.org
Subject: Re: [PATCH v3 6/6] fbdev: Rename fb_mem*() helpers

Hi Thomas.

On Tue, May 02, 2023 at 03:02:23PM +0200, Thomas Zimmermann wrote:
> Update the names of the fb_mem*() helpers to be consistent with their
> regular counterparts. Hence, fb_memset() now becomes fb_memset_io(),
> fb_memcpy_fromfb() now becomes fb_memcpy_fromio() and fb_memcpy_tofb()
> becomes fb_memcpy_toio(). No functional changes.
> 
> Signed-off-by: Thomas Zimmermann <tzimmermann@...e.de>
> ---
...
>  
> -#ifndef fb_memcpy_fromfb
> -static inline void fb_memcpy_fromfb(void *to, const volatile void __iomem *from, size_t n)
> +#ifndef fb_memcpy_fromio
> +static inline void fb_memcpy_fromio(void *to, const volatile void __iomem *from, size_t n)
>  {
>  	memcpy_fromio(to, from, n);
>  }
> -#define fb_memcpy_fromfb fb_memcpy_fromfb
> +#define fb_memcpy_fromio fb_memcpy_fromio
>  #endif
>  
> -#ifndef fb_memcpy_tofb
> -static inline void fb_memcpy_tofb(volatile void __iomem *to, const void *from, size_t n)
> +#ifndef fb_memcpy_toio
> +static inline void fb_memcpy_toio(volatile void __iomem *to, const void *from, size_t n)
>  {
>  	memcpy_toio(to, from, n);
>  }
> -#define fb_memcpy_tofb fb_memcpy_tofb
> +#define fb_memcpy_toio fb_memcpy_toio
>  #endif
>  
>  #ifndef fb_memset
> -static inline void fb_memset(volatile void __iomem *addr, int c, size_t n)
> +static inline void fb_memset_io(volatile void __iomem *addr, int c, size_t n)
>  {
>  	memset_io(addr, c, n);
>  }
> -#define fb_memset fb_memset
> +#define fb_memset fb_memset_io

The static inlines wrappers does not provide any value, and could be replaced by
direct calls to memcpy_fromio(), memcpy_toio(), memset_io().

If you decide to keep the wrappers I will not hold you back, so the
patch has my:
Reviewed-by: Sam Ravnborg <sam@...nborg.org>

But I prefer the direct calls without the wrappers....

	Sam