Messages in this thread |  | | Date | Wed, 5 Nov 2008 12:36:11 +0100 | From | "Hans J. Koch" <> | Subject | Re: [PATCH] UIO: only call pgprot_noncached if defined |
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There seem to be archs that cannot easily implement a sensible pgprot_noncached() function, so we should merge this patch. UIO doesn't compile on these archs right now.
Thanks, Hans
On Wed, Oct 29, 2008 at 01:26:17PM -0400, Mike Frysinger wrote: > 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>
Signed-off-by: Hans J. Koch <hjk@linutronix.de>
> --- > 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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