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authorGeert Uytterhoeven <geert@linux-m68k.org>2011-05-07 15:08:36 +0200
committerGeert Uytterhoeven <geert@linux-m68k.org>2011-07-30 21:21:38 +0200
commit88efd0bbc0fe403a9948e6f94cc48b9f15ee4861 (patch)
tree932a4f41f7ae679e3c0c35f694aa2b147546924a /arch/sparc/kernel/ioport.c
parent1dad6c7bd7dd158ef874f7382615cedc21a1f48d (diff)
downloadop-kernel-dev-88efd0bbc0fe403a9948e6f94cc48b9f15ee4861.zip
op-kernel-dev-88efd0bbc0fe403a9948e6f94cc48b9f15ee4861.tar.gz
sparc: _sparc_find_resource() should check for exact matches
The address that's passed to _sparc_find_resource() should always be the start address of a resource: - iounmap() passes a page-aligned virtual address, while the original address was created by adding the in-page offset to the resource's start address, - sbus_free_coherent() and pci32_free_coherent() should be passed an address obtained from sbus_alloc_coherent() resp. pci32_alloc_coherent(), which is always a resource's start address. Hence replace the range check by a check for an exact match. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Acked-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/ioport.c')
-rw-r--r--arch/sparc/kernel/ioport.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c
index 1c9c80a..b5e83be 100644
--- a/arch/sparc/kernel/ioport.c
+++ b/arch/sparc/kernel/ioport.c
@@ -723,12 +723,12 @@ static const struct file_operations sparc_io_proc_fops = {
* This probably warrants some sort of hashing.
*/
static struct resource *_sparc_find_resource(struct resource *root,
- unsigned long hit)
+ unsigned long start)
{
struct resource *tmp;
for (tmp = root->child; tmp != 0; tmp = tmp->sibling) {
- if (tmp->start <= hit && tmp->end >= hit)
+ if (tmp->start == start)
return tmp;
}
return NULL;
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