diff options
| author | Barry Song <baohua.song@csr.com> | 2011-10-10 23:38:41 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rjw@sisk.pl> | 2011-10-16 23:30:37 +0200 |
| commit | f126f7334f72e2fd1b7a62bba20c488b86e6e7c4 (patch) | |
| tree | c56a286700df963245e56cb8caea3e96565b478b | |
| parent | bf1c138e350155edb06709c7fbf0946f252b257c (diff) | |
| download | linux-f126f7334f72e2fd1b7a62bba20c488b86e6e7c4.tar.bz2 | |
PM / Hibernate: Add resumedelay kernel param in addition to resumewait
Patch "PM / Hibernate: Add resumewait param to support MMC-like
devices as resume file" added the resumewait kernel command line
option. The present patch adds resumedelay so that
resumewait/delay were analogous to rootwait/delay.
[rjw: Modified the subject and changelog slightly.]
Signed-off-by: Barry Song <baohua.song@csr.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
| -rw-r--r-- | Documentation/kernel-parameters.txt | 3 | ||||
| -rw-r--r-- | kernel/power/hibernate.c | 14 |
2 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 88a7b197a4eb..831bde222bde 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -2240,6 +2240,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. in <PAGE_SIZE> units (needed only for swap files). See Documentation/power/swsusp-and-swap-files.txt + resumedelay= [HIBERNATION] Delay (in seconds) to pause before attempting to + read the resume files + resumewait [HIBERNATION] Wait (indefinitely) for resume device to show up. Useful for devices that are detected asynchronously (e.g. USB and MMC devices). diff --git a/kernel/power/hibernate.c b/kernel/power/hibernate.c index 0f8785080cde..50f537953e70 100644 --- a/kernel/power/hibernate.c +++ b/kernel/power/hibernate.c @@ -33,6 +33,7 @@ static int nocompress = 0; static int noresume = 0; static int resume_wait = 0; +static int resume_delay = 0; static char resume_file[256] = CONFIG_PM_STD_PARTITION; dev_t swsusp_resume_device; sector_t swsusp_resume_block; @@ -730,6 +731,12 @@ static int software_resume(void) pr_debug("PM: Checking hibernation image partition %s\n", resume_file); + if (resume_delay) { + printk(KERN_INFO "Waiting %dsec before reading resume device...\n", + resume_delay); + ssleep(resume_delay); + } + /* Check if the device is there */ swsusp_resume_device = name_to_dev_t(resume_file); if (!swsusp_resume_device) { @@ -1079,8 +1086,15 @@ static int __init resumewait_setup(char *str) return 1; } +static int __init resumedelay_setup(char *str) +{ + resume_delay = simple_strtoul(str, NULL, 0); + return 1; +} + __setup("noresume", noresume_setup); __setup("resume_offset=", resume_offset_setup); __setup("resume=", resume_setup); __setup("hibernate=", hibernate_setup); __setup("resumewait", resumewait_setup); +__setup("resumedelay=", resumedelay_setup); |