Merge branch 'x86-setup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / drivers / base / power / main.c

diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c
index 69b4ddb..3e4bc69 100644 (file)
--- a/drivers/base/power/main.c
+++ b/drivers/base/power/main.c
@@ -357,6 +357,7 @@ static void dpm_power_up(pm_message_t state)
 {
        struct device *dev;
 
+       mutex_lock(&dpm_list_mtx);
        list_for_each_entry(dev, &dpm_list, power.entry)
                if (dev->power.status > DPM_OFF) {
                        int error;
@@ -366,6 +367,7 @@ static void dpm_power_up(pm_message_t state)
                        if (error)
                                pm_dev_err(dev, state, " early", error);
                }
+       mutex_unlock(&dpm_list_mtx);
 }
 
 /**
@@ -614,6 +616,7 @@ int device_power_down(pm_message_t state)
        int error = 0;
 
        suspend_device_irqs();
+       mutex_lock(&dpm_list_mtx);
        list_for_each_entry_reverse(dev, &dpm_list, power.entry) {
                error = suspend_device_noirq(dev, state);
                if (error) {
@@ -622,6 +625,7 @@ int device_power_down(pm_message_t state)
                }
                dev->power.status = DPM_OFF_IRQ;
        }
+       mutex_unlock(&dpm_list_mtx);
        if (error)
                device_power_up(resume_event(state));
        return error;