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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>
This commit is contained in:
Nobuhiro Iwamatsu 2011-11-04 22:13:50 +09:00 committed by Paul Mundt
parent 1a67a573b8
commit dfd3b596fb
1 changed files with 5 additions and 0 deletions
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5
arch/sh/include/asm/page.h
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@ -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))