aboutsummaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-27 13:25:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-27 13:25:38 -0700
commit3c0b9de6d37a481673e81001c57ca0e410c72346 (patch)
tree564bedb338e7caff0e80dfa7765a819b2feb0ecd
parente09d13c4c8805546d97bcc8c508c07f7d8f4c8e8 (diff)
downloadvexpress-lsk-3c0b9de6d37a481673e81001c57ca0e410c72346.tar.gz
vm: add no-mmu vm_iomap_memory() stub
I think we could just move the full vm_iomap_memory() function into util.h or similar, but I didn't get any reply from anybody actually using nommu even to this trivial patch, so I'm not going to touch it any more than required. Here's the fairly minimal stub to make the nommu case at least potentially work. It doesn't seem like anybody cares, though. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/nommu.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 2f3ea749c31..e001768b14e 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1838,6 +1838,16 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr,
}
EXPORT_SYMBOL(remap_pfn_range);
+int vm_iomap_memory(struct vm_area_struct *vma, phys_addr_t start, unsigned long len)
+{
+ unsigned long pfn = start >> PAGE_SHIFT;
+ unsigned long vm_len = vma->vm_end - vma->vm_start;
+
+ pfn += vma->vm_pgoff;
+ return io_remap_pfn_range(vma, vma->vm_start, pfn, vm_len, vma->vm_page_prot);
+}
+EXPORT_SYMBOL(vm_iomap_memory);
+
int remap_vmalloc_range(struct vm_area_struct *vma, void *addr,
unsigned long pgoff)
{