From 2df83fa4bce421f8176932142f1004adfba0f9dd Mon Sep 17 00:00:00 2001 From: Minho Ban Date: Mon, 14 May 2012 21:45:31 +0200 Subject: 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 Signed-off-by: Rafael J. Wysocki --- kernel/power/hibernate.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'kernel/power') diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index e09dfbfeece..8b53db38a27 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -25,6 +25,8 @@ #include #include #include +#include +#include #include #include "power.h" @@ -722,6 +724,17 @@ static int software_resume(void) /* Check if the device is there */ swsusp_resume_device = name_to_dev_t(resume_file); + + /* + * name_to_dev_t is ineffective to verify parition if resume_file is in + * integer format. (e.g. major:minor) + */ + if (isdigit(resume_file[0]) && resume_wait) { + int partno; + while (!get_gendisk(swsusp_resume_device, &partno)) + msleep(10); + } + if (!swsusp_resume_device) { /* * Some device discovery might still be in progress; we need -- cgit v1.2.3-18-g5258