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| author | Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> | 2011-11-04 22:13:50 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2011-11-04 22:13:50 +0900 |
| commit | dfd3b596fbbfa48b8e7966ef996d587157554b69 (patch) | |
| tree | ff2bd816426c4565e521a53b22742bf1169c2327 /arch/sh | |
| parent | 1a67a573b8d9f02211f36fbab50f6265dc49384a (diff) | |
| download | linux-stable-dfd3b596fbbfa48b8e7966ef996d587157554b69.tar.gz linux-stable-dfd3b596fbbfa48b8e7966ef996d587157554b69.tar.bz2 linux-stable-dfd3b596fbbfa48b8e7966ef996d587157554b69.zip | |
sh: Fix cached/uncaced address calculation in 29bit mode
In the case of 29bit mode, CAC/UNCAC_ADDR does not return a right address.
This revises this problem by using P1SEGADDR and P2SEGADDR in 29bit mode.
Reported-by: Yutaro Ebihara <ebiharaml@si-linux.co.jp>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Tested-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Simon Horman <horms@verge.net.au>
Cc: stable@kernel.org
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh')
| -rw-r--r-- | arch/sh/include/asm/page.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h index 0dca9a5c6be6..15d970328f71 100644 --- a/arch/sh/include/asm/page.h +++ b/arch/sh/include/asm/page.h @@ -151,8 +151,13 @@ typedef struct page *pgtable_t; #endif /* !__ASSEMBLY__ */ #ifdef CONFIG_UNCACHED_MAPPING +#if defined(CONFIG_29BIT) +#define UNCAC_ADDR(addr) P2SEGADDR(addr) +#define CAC_ADDR(addr) P1SEGADDR(addr) +#else #define UNCAC_ADDR(addr) ((addr) - PAGE_OFFSET + uncached_start) #define CAC_ADDR(addr) ((addr) - uncached_start + PAGE_OFFSET) +#endif #else #define UNCAC_ADDR(addr) ((addr)) #define CAC_ADDR(addr) ((addr)) |