From: Tuowen Zhao <ztuowen@gmail.com>
Date: Wed, 16 Oct 2019 21:06:27 +0000 (-0600)
Subject: sparc64: implement ioremap_uc
X-Git-Tag: v5.4.3~97
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c3277e67a93bb2cf76f51a6e06011a5753f0fbad;p=platform%2Fkernel%2Flinux-rpi.git

sparc64: implement ioremap_uc

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>
---

diff --git a/arch/sparc/include/asm/io_64.h b/arch/sparc/include/asm/io_64.h
index 6889110..f4afa30 100644
--- 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(unsigned long offset, unsigned long size)
 }
 
 #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))