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>

1 files changed, 5 insertions, 5 deletions

diff --git a/kernel/resource.c b/kernel/resource.c
index 54ba6de3757c..a269b9a1e834 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -1563,17 +1563,17 @@ static int strict_iomem_checks;
 
 /*
  * 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 @@ int iomem_is_exclusive(u64 addr)
                         continue;
                 if (IS_ENABLED(CONFIG_IO_STRICT_DEVMEM)
                                 || p->flags & IORESOURCE_EXCLUSIVE) {
-                        err = 1;
+                        err = true;
                         break;
                 }
         }