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| author | Johannes Berg <johannes@sipsolutions.net> | 2007-05-06 14:50:50 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-07 12:12:59 -0700 |
| commit | f0ced9b229cfbc76b5db9837b4b256b602d56610 (patch) | |
| tree | 1c9cb6b6c73579aa103ff266f1f35e6d47da223e /kernel/power/disk.c | |
| parent | ab3bfca7abf3fd0fe41d26d839610a787aa7e587 (diff) | |
| download | linux-f0ced9b229cfbc76b5db9837b4b256b602d56610.tar.gz linux-f0ced9b229cfbc76b5db9837b4b256b602d56610.tar.bz2 linux-f0ced9b229cfbc76b5db9837b4b256b602d56610.zip | |
power management: change /sys/power/disk display
Change /sys/power/disk to display all valid modes as well as the currently
selected one in a fashion known from the LED subsystem.
This changes userspace API, but it is apparently not used much (we asked
some userspace developers)
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-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 | 29 |
1 files changed, 28 insertions, 1 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c index e518379b667a..06331374d862 100644 --- a/kernel/power/disk.c +++ b/kernel/power/disk.c @@ -350,7 +350,34 @@ static const char * const pm_disk_modes[] = { static ssize_t disk_show(struct kset *kset, char *buf) { - return sprintf(buf, "%s\n", pm_disk_modes[pm_disk_mode]); + int i; + char *start = buf; + + for (i = PM_DISK_PLATFORM; i < PM_DISK_MAX; i++) { + if (!pm_disk_modes[i]) + continue; + switch (i) { + case PM_DISK_SHUTDOWN: + case PM_DISK_REBOOT: + case PM_DISK_TEST: + case PM_DISK_TESTPROC: + break; + default: + if (pm_ops && pm_ops->enter && + (i == pm_ops->pm_disk_mode)) + break; + /* not a valid mode, continue with loop */ + continue; + } + if (i == pm_disk_mode) + buf += sprintf(buf, "[%s]", pm_disk_modes[i]); + else + buf += sprintf(buf, "%s", pm_disk_modes[i]); + if (i+1 != PM_DISK_MAX) + buf += sprintf(buf, " "); + } + buf += sprintf(buf, "\n"); + return buf-start; } |