[PATCH] powerpc: add pgprot_cached_noncoherent()
DORMANTno replies
From: Geoff Thorpe <hidden>
Date: 2011-10-27 13:05:40
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This adds a pgprot combination required by some cache-enabled IO device mappings, such as Freescale datapath (QMan and BMan) portals. Signed-off-by: Geoff Thorpe <redacted> --- arch/powerpc/include/asm/pgtable.h | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index 88b0bd9..2e0e411 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h@@ -170,6 +170,9 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long addre #define pgprot_cached_wthru(prot) (__pgprot((pgprot_val(prot) & ~_PAGE_CACHE_CTL) | \ _PAGE_COHERENT | _PAGE_WRITETHRU)) +#define pgprot_cached_noncoherent(prot) \ + (__pgprot(pgprot_val(prot) & ~_PAGE_CACHE_CTL)) + #define pgprot_writecombine pgprot_noncached_wc struct file;
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1.7.3.4