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sh: Provide unxlate_dev_mem_ptr() in asm/io.h

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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 this 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>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230704190144.2888679-1-linux@roeck-us.net
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
This commit is contained in:
Guenter Roeck 2023-07-04 12:01:44 -07:00 committed by John Paul Adrian Glaubitz
parent 3ad4dcbc31
commit 7497840d46
1 changed files with 1 additions and 0 deletions
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arch/sh/include/asm/io.h
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@ -286,6 +286,7 @@ static inline void iounmap(volatile void __iomem *addr) { }
* access
*/
#define xlate_dev_mem_ptr(p) __va(p)
#define unxlate_dev_mem_ptr(p, v) do { } while (0)
#define ARCH_HAS_VALID_PHYS_ADDR_RANGE
int valid_phys_addr_range(phys_addr_t addr, size_t size);