From: Tuowen Zhao <ztuowen@xxxxxxxxx> commit 38e45d81d14e5f78cd67922596b1c37b4c22ec74 upstream. On sparc64, the whole physical IO address space is accessible using physically addressed loads and stores. *_uc does nothing like the others. Cc: <stable@xxxxxxxxxxxxxxx> # v4.19+ Reported-by: kbuild test robot <lkp@xxxxxxxxx> Signed-off-by: Tuowen Zhao <ztuowen@xxxxxxxxx> Acked-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/sparc/include/asm/io_64.h | 1 + 1 file changed, 1 insertion(+) --- a/arch/sparc/include/asm/io_64.h +++ b/arch/sparc/include/asm/io_64.h @@ -409,6 +409,7 @@ static inline void __iomem *ioremap(unsi } #define ioremap_nocache(X,Y) ioremap((X),(Y)) +#define ioremap_uc(X,Y) ioremap((X),(Y)) #define ioremap_wc(X,Y) ioremap((X),(Y)) #define ioremap_wt(X,Y) ioremap((X),(Y))
