From: Tuowen Zhao ztuowen@gmail.com
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@vger.kernel.org # v4.19+ Reported-by: kbuild test robot lkp@intel.com Signed-off-by: Tuowen Zhao ztuowen@gmail.com Acked-by: David S. Miller davem@davemloft.net Signed-off-by: Lee Jones lee.jones@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -407,6 +407,7 @@ 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))