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authorAnton Blanchard <anton@samba.org>2011-02-28 20:00:47 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-03-02 16:50:24 +1100
commitfe3cc0d99de6a9bf99b6c279a8afb5833888c1f7 (patch)
tree05e442859ea1d90fff71717bc3493f1997663437
parenta9d8946b4af9e003c645ffb46489fdeb154e7ed9 (diff)
downloadlinux-fe3cc0d99de6a9bf99b6c279a8afb5833888c1f7.tar.bz2
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>
-rw-r--r--arch/powerpc/include/asm/pgtable.h1
1 files changed, 1 insertions, 0 deletions
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,