m68k/amiga: Chip RAM - Use lookup_resource()
Replace a custom implementation (which doesn't lock the resource tree) by a
call to lookup_resource()
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
diff --git a/arch/m68k/amiga/chipram.c b/arch/m68k/amiga/chipram.c
index 4790f77..99449fb 100644
--- a/arch/m68k/amiga/chipram.c
+++ b/arch/m68k/amiga/chipram.c
@@ -93,21 +93,21 @@
void amiga_chip_free(void *ptr)
{
unsigned long start = ZTWO_PADDR(ptr);
- struct resource **p, *res;
+ struct resource *res;
unsigned long size;
- for (p = &chipram_res.child; (res = *p); p = &res->sibling) {
- if (res->start != start)
- continue;
- *p = res->sibling;
- size = resource_size(res);
- pr_debug("amiga_chip_free: free %lu bytes at %p\n", size, ptr);
- atomic_add(size, &chipavail);
- kfree(res);
+ res = lookup_resource(&chipram_res, start);
+ if (!res) {
+ pr_err("amiga_chip_free: trying to free nonexistent region at "
+ "%p\n", ptr);
return;
}
- pr_err("amiga_chip_free: trying to free nonexistent region at %p\n",
- ptr);
+
+ size = resource_size(res);
+ pr_debug("amiga_chip_free: free %lu bytes at %p\n", size, ptr);
+ atomic_add(size, &chipavail);
+ release_resource(res);
+ kfree(res);
}
EXPORT_SYMBOL(amiga_chip_free);
