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SubjectRe: [PATCH] sh: provide unxlate_dev_mem_ptr() in asm/io.h
On Tue, Jul 4, 2023, at 21:01, Guenter Roeck wrote:
> The unxlate_dev_mem_ptr() function has no prototype on the sh architecture,
> which does not include asm-generic/io.h. This results in the following
> build failure.
>
> drivers/char/mem.c: In function 'read_mem':
> drivers/char/mem.c:164:25: error: implicit declaration of function
> 'unxlate_dev_mem_ptr'
>
> This compile error is now seen because commit 99b619b37ae1 ("mips: provide
> unxlate_dev_mem_ptr() in asm/io.h") removed the weak function which was
> previously in place to handle the problem.
>
> Add a trivial macro to the sh header to provide the now missing dummy
> function.
>
> Fixes: 99b619b37ae1 ("mips: provide unxlate_dev_mem_ptr() in asm/io.h")
> Cc: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Ideally, we should use the asm-generic/io.h header here, but as a hotfix
this should do.

Acked-by: Arnd Bergmann <arnd@arndb.de>

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