From fe3cc0d99de6a9bf99b6c279a8afb5833888c1f7 Mon Sep 17 00:00:00 2001 From: Anton Blanchard <anton@samba.org> Date: Mon, 28 Feb 2011 20:00:47 +0000 Subject: [PATCH] powerpc: Add pgprot_writecombine A number of drivers are using pgprot_writecombine() to enable write combining on userspace mappings. Implement it on powerpc. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/include/asm/pgtable.h | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h index 89f158731ce3..88b0bd925a8b 100644 --- a/arch/powerpc/include/asm/pgtable.h +++ b/arch/powerpc/include/asm/pgtable.h @@ -170,6 +170,7 @@ 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_writecombine pgprot_noncached_wc struct file; extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,