From f0ced9b229cfbc76b5db9837b4b256b602d56610 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sun, 6 May 2007 14:50:50 -0700 Subject: 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 Acked-by: "Rafael J. Wysocki" Acked-by: Pavel Machek Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/power/disk.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) (limited to 'kernel/power') diff --git a/kernel/power/disk.c b/kernel/power/disk.c index e518379b667..06331374d86 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; } -- cgit v1.2.3-70-g09d2