kernel/resource: iomem_is_exclusive can be boolean
Make iomem_is_exclusive return bool due to this particular function only
using either one or zero as its return value.
No functional change.
Link: http://lkml.kernel.org/r/1513266622-15860-5-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/kernel/resource.c b/kernel/resource.c
index 54ba6de..a269b9a1 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -1563,17 +1563,17 @@
/*
* check if an address is reserved in the iomem resource tree
- * returns 1 if reserved, 0 if not reserved.
+ * returns true if reserved, false if not reserved.
*/
-int iomem_is_exclusive(u64 addr)
+bool iomem_is_exclusive(u64 addr)
{
struct resource *p = &iomem_resource;
- int err = 0;
+ bool err = false;
loff_t l;
int size = PAGE_SIZE;
if (!strict_iomem_checks)
- return 0;
+ return false;
addr = addr & PAGE_MASK;
@@ -1596,7 +1596,7 @@
continue;
if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM)
|| p->flags & IORESOURCE_EXCLUSIVE) {
- err = 1;
+ err = true;
break;
}
}