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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-27 13:25:38 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-08-20 08:21:01 -0700
commit2a9a85d5fb90db72d8e0618a0fafa2069be86198 (patch)
treec1888f3772e38119bcf50e9933c87b6c5e2f4249
parent0e69b54fa8b48e3cdc1a78f77beab3af763a33a1 (diff)
vm: add no-mmu vm_iomap_memory() stub
commit 3c0b9de6d37a481673e81001c57ca0e410c72346 upstream. 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> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 1692fef8e1bf..92429242a197 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1826,6 +1826,16 @@ 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)
{