sparc64: implement ioremap_uc

ztuowen · Lee Jones · commit 38e45d81d14e · 2019-11-11T08:39:54.000Z
On sparc64, the whole physical IO address space is accessible using
physically addressed loads and stores. *_uc does nothing like the
others.

Cc: &lt;stable@vger.kernel.org&gt; # v4.19+
Reported-by: kbuild test robot &lt;lkp@intel.com&gt;
Signed-off-by: Tuowen Zhao &lt;ztuowen@gmail.com&gt;
Acked-by: David S. Miller &lt;davem@davemloft.net&gt;
Signed-off-by: Lee Jones &lt;lee.jones@linaro.org&gt;
diff --git 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))
 

Original file line number	Diff line number	Diff line change
`@@ -407,6 +407,7 @@ static inline void __iomem *ioremap(unsigned long offset, unsigned long size)`
`407`	`407`	`}`
`408`	`408`
`409`	`409`	`#define ioremap_nocache(X,Y) ioremap((X),(Y))`
	`410`	`+#define ioremap_uc(X,Y) ioremap((X),(Y))`
`410`	`411`	`#define ioremap_wc(X,Y) ioremap((X),(Y))`
`411`	`412`	`#define ioremap_wt(X,Y) ioremap((X),(Y))`
`412`	`413`