PM / Hibernate: Use get_gendisk to verify partition if resume_file is integer format

Sometimes resume= parameter comes in integer style (e.g. major:minor)
and then name_to_dev_t can not detect partition properly. (especially
async device like usb, mmc).

This patch calls get_gendisk() if resumewait is true and resume_file
is in integer format to work around this problem.

Signed-off-by: Minho Ban <mhban@samsung.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

1 files changed, 2 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index c1601e5a8b7..5900b49323c 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -2372,6 +2372,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
         resume=         [SWSUSP]
                         Specify the partition device for software suspend
+                        Format:
+                        {/dev/<dev> | PARTUUID=<uuid> | <int>:<int> | <hex>}
 
         resume_offset=  [SWSUSP]
                         Specify the offset from the beginning of the partition