diff options
| -rw-r--r-- | drivers/base/power/sysfs.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/drivers/base/power/sysfs.c b/drivers/base/power/sysfs.c index f3a0c562bcb..40d7242a07c 100644 --- a/drivers/base/power/sysfs.c +++ b/drivers/base/power/sysfs.c @@ -27,22 +27,30 @@ static ssize_t state_show(struct device * dev, struct device_attribute *attr, char * buf) { - return sprintf(buf, "%u\n", dev->power.power_state.event); + if (dev->power.power_state.event) + return sprintf(buf, "2\n"); + else + return sprintf(buf, "0\n"); } static ssize_t state_store(struct device * dev, struct device_attribute *attr, const char * buf, size_t n) { pm_message_t state; - char * rest; - int error = 0; + int error = -EINVAL; - state.event = simple_strtoul(buf, &rest, 10); - if (*rest) - return -EINVAL; - if (state.event) + state.event = PM_EVENT_SUSPEND; + /* Older apps expected to write "3" here - confused with PCI D3 */ + if ((n == 1) && !strcmp(buf, "3")) error = dpm_runtime_suspend(dev, state); - else + + if ((n == 1) && !strcmp(buf, "2")) + error = dpm_runtime_suspend(dev, state); + + if ((n == 1) && !strcmp(buf, "0")) { dpm_runtime_resume(dev); + error = 0; + } + return error ? error : n; } |