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| author | Rafael J. Wysocki <rjw@sisk.pl> | 2007-05-17 07:11:19 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-17 14:23:05 +0200 |
| commit | 8d98a690f58e0d6ecf424b7ca84488475cf87bd9 (patch) | |
| tree | 09adca50773f465b75fc04682377bfaa40c72876 /kernel/power/disk.c | |
| parent | circular locking dependency found in QUOTA OFF (diff) | |
| download | linux-8d98a690f58e0d6ecf424b7ca84488475cf87bd9.tar.xz linux-8d98a690f58e0d6ecf424b7ca84488475cf87bd9.zip | |
swsusp: fix sysfs interface
The sysfs files /sys/power/disk and /sys/power/state do not work as
documented, since they allow the user to write only a few initial
characters of the input string to trigger the option (eg. 'echo pl >
/sys/power/disk' activates the platform mode of hibernation). Fix it.
Special thanks to Peter Moulder <Peter.Moulder@infotech.monash.edu.au> for
pointing out the problem.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/disk.c')
| -rw-r--r-- | kernel/power/disk.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index b5f0543ed84d..f445b9cd60fb 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -416,7 +416,8 @@ static ssize_t disk_store(struct kset *kset, const char *buf, size_t n) mutex_lock(&pm_mutex); for (i = HIBERNATION_FIRST; i <= HIBERNATION_MAX; i++) { - if (!strncmp(buf, hibernation_modes[i], len)) { + if (len == strlen(hibernation_modes[i]) + && !strncmp(buf, hibernation_modes[i], len)) { mode = i; break; } |