summaryrefslogtreecommitdiff
path: root/mm/nommu.c
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 /mm/nommu.c
parente09d13c4c8805546d97bcc8c508c07f7d8f4c8e8 (diff)
downloadlwn-3c0b9de6d37a481673e81001c57ca0e410c72346.tar.gz
lwn-3c0b9de6d37a481673e81001c57ca0e410c72346.zip
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>
Diffstat (limited to 'mm/nommu.c')
-rw-r--r--mm/nommu.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 2f3ea749c318..e001768b14e8 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)
{