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Subject[PATCH] UIO: only call pgprot_noncached if defined
Date
Not all arches support pgprot_noncached (like the Blackfin port).  Other
drivers seem to handle this by checking to see if it is defined, so let's
do that in the UIO driver as well.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
drivers/uio/uio.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index f9b4647..c43dbea 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -529,7 +529,9 @@ static int uio_mmap_physical(struct vm_area_struct *vma)

vma->vm_flags |= VM_IO | VM_RESERVED;

+#ifdef pgprot_noncached
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+#endif

return remap_pfn_range(vma,
vma->vm_start,
--
1.6.0.2


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