Re: [PATCH] mtd: cfi: don't warn about broken geometry for !CONFIG_MTD

Brian Norris
2015-11-30T20:55:05Z

On Tue, Nov 24, 2015 at 11:09:02PM +0100, Arnd Bergmann wrote:
> The linux/mtd/map.h header file is included by a couple of
> platform specific files that are built even when CONFIG_MTD
> is disabled, and we always get
>
> warning "No CONFIG_MTD_MAP_BANK_WIDTH_xx selected. No NOR chip support can work"
>
> in that case. This adds an #ifdef around the pointless warning,
> as everything is really fine when we don't build the drivers
> anyway.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> ---
> > I'm actually still getting the warnings for any file that includes <linux/mtd/map.h>
> > while CONFIG_MTD is disabled. I have a fix now that I'm testing overnight
> > and plan to post tomorrow, then we can decide whether it should be part of
> > the same patch, or we should have two separate patches.
>
> The patch fixes the remaining warnings I see on ARM randconfigs in this file,
> and I think it makes sense to keep it as a separate patch, as these are really
> distinct problems even thought the symptom is the same.
>
> Please apply both.
>
> diff --git a/include/linux/mtd/map.h b/include/linux/mtd/map.h
> index 366cf77953b5..58f3ba709ade 100644
> --- a/include/linux/mtd/map.h
> +++ b/include/linux/mtd/map.h
> @@ -142,7 +142,9 @@
> #endif
>
> #ifndef map_bankwidth
> +#ifdef CONFIG_MTD
> #warning "No CONFIG_MTD_MAP_BANK_WIDTH_xx selected. No NOR chip support can work"
> +#endif
> static inline int map_bankwidth(void *map)
> {
> BUG();
>

I guess no one includes mtd/cfi.h with CONFIG_MTD=n? Otherwise, we might
have the same problems there.

Pushed to l2-mtd.git, thanks!

Brian