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| author | Stephen Hemminger <shemminger@osdl.org> | 2006-12-06 20:34:35 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:28 -0800 |
| commit | a6d70980602e6f1869ebcdcbfaf55a0a5941583e (patch) | |
| tree | b7e9b5f457eb7fe91fbbdbe978a50493da862cf2 /kernel/power/disk.c | |
| parent | 3eb1b3a40722cbb46631db373af66d13d1e7ac81 (diff) | |
| download | kernel_samsung_tuna-a6d70980602e6f1869ebcdcbfaf55a0a5941583e.zip kernel_samsung_tuna-a6d70980602e6f1869ebcdcbfaf55a0a5941583e.tar.gz kernel_samsung_tuna-a6d70980602e6f1869ebcdcbfaf55a0a5941583e.tar.bz2 | |
[PATCH] convert pm_sem to a mutex
The power management semaphore is only used as mutex, so convert it.
[akpm@osdl.org: fix rotten bug]
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'kernel/power/disk.c')
| -rw-r--r-- | kernel/power/disk.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index 53b3b57..08d9e7a 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -213,10 +213,10 @@ static int software_resume(void) { int error; - down(&pm_sem); + mutex_lock(&pm_mutex); if (!swsusp_resume_device) { if (!strlen(resume_file)) { - up(&pm_sem); + mutex_unlock(&pm_mutex); return -ENOENT; } swsusp_resume_device = name_to_dev_t(resume_file); @@ -231,7 +231,7 @@ static int software_resume(void) * FIXME: If noresume is specified, we need to find the partition * and reset it back to normal swap space. */ - up(&pm_sem); + mutex_unlock(&pm_mutex); return 0; } @@ -275,7 +275,7 @@ static int software_resume(void) unprepare_processes(); Done: /* For success case, the suspend path will release the lock */ - up(&pm_sem); + mutex_unlock(&pm_mutex); pr_debug("PM: Resume from disk failed.\n"); return 0; } @@ -336,7 +336,7 @@ static ssize_t disk_store(struct subsystem * s, const char * buf, size_t n) p = memchr(buf, '\n', n); len = p ? p - buf : n; - down(&pm_sem); + mutex_lock(&pm_mutex); for (i = PM_DISK_FIRMWARE; i < PM_DISK_MAX; i++) { if (!strncmp(buf, pm_disk_modes[i], len)) { mode = i; @@ -360,7 +360,7 @@ static ssize_t disk_store(struct subsystem * s, const char * buf, size_t n) pr_debug("PM: suspend-to-disk mode set to '%s'\n", pm_disk_modes[mode]); - up(&pm_sem); + mutex_unlock(&pm_mutex); return error ? error : n; } @@ -385,9 +385,9 @@ static ssize_t resume_store(struct subsystem *subsys, const char *buf, size_t n) if (maj != MAJOR(res) || min != MINOR(res)) goto out; - down(&pm_sem); + mutex_lock(&pm_mutex); swsusp_resume_device = res; - up(&pm_sem); + mutex_unlock(&pm_mutex); printk("Attempting manual resume\n"); noresume = 0; software_resume(); |