From: Chengguang Xu <cgxu519@gmx.com>
Date: Mon, 25 Jun 2018 05:30:58 +0000 (+0800)
Subject: PM / hibernate: cast PAGE_SIZE to int when comparing with error code
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d5641c64c48f4408500a348301bff01fbf2c1ec5;p=linux.git

PM / hibernate: cast PAGE_SIZE to int when comparing with error code

If PAGE_SIZE is unsigned type then negative error code will be
larger than PAGE_SIZE.

Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index c2bcf97d24c8f..d7f6c1a288d33 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -923,7 +923,7 @@ int swsusp_write(unsigned int flags)
 	}
 	memset(&snapshot, 0, sizeof(struct snapshot_handle));
 	error = snapshot_read_next(&snapshot);
-	if (error < PAGE_SIZE) {
+	if (error < (int)PAGE_SIZE) {
 		if (error >= 0)
 			error = -EFAULT;
 
@@ -1483,7 +1483,7 @@ int swsusp_read(unsigned int *flags_p)
 
 	memset(&snapshot, 0, sizeof(struct snapshot_handle));
 	error = snapshot_write_next(&snapshot);
-	if (error < PAGE_SIZE)
+	if (error < (int)PAGE_SIZE)
 		return error < 0 ? error : -EFAULT;
 	header = (struct swsusp_info *)data_of(snapshot);
 	error = get_swap_reader(&handle, flags_p);