Messages in this thread Patch in this message | | | From | Geert Uytterhoeven <> | Subject | [PATCH 1/4] sparc: _sparc_find_resource() should check for exact matches | Date | Sat, 21 May 2011 21:39:13 +0200 |
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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> --- arch/sparc/kernel/ioport.c | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/sparc/kernel/ioport.c b/arch/sparc/kernel/ioport.c index c6ce9a6..91e8c76 100644 --- a/arch/sparc/kernel/ioport.c +++ b/arch/sparc/kernel/ioport.c @@ -733,12 +733,12 @@ 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; -- 1.7.0.4
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