mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-28 04:34:39 +02:00
12cb8e47f8
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24914 3c298f89-4303-0410-b956-a3cf2f4a3e73
50 lines
1.2 KiB
Diff
50 lines
1.2 KiB
Diff
--- a/drivers/power/jz4740-battery.c
|
|
+++ b/drivers/power/jz4740-battery.c
|
|
@@ -47,6 +47,8 @@ struct jz_battery {
|
|
|
|
struct power_supply battery;
|
|
struct delayed_work work;
|
|
+
|
|
+ struct mutex lock;
|
|
};
|
|
|
|
static inline struct jz_battery *psy_to_jz_battery(struct power_supply *psy)
|
|
@@ -68,6 +70,8 @@ static long jz_battery_read_voltage(stru
|
|
unsigned long val;
|
|
long voltage;
|
|
|
|
+ mutex_lock(&battery->lock);
|
|
+
|
|
INIT_COMPLETION(battery->read_completion);
|
|
|
|
enable_irq(battery->irq);
|
|
@@ -91,6 +95,8 @@ static long jz_battery_read_voltage(stru
|
|
battery->cell->disable(battery->pdev);
|
|
disable_irq(battery->irq);
|
|
|
|
+ mutex_unlock(&battery->lock);
|
|
+
|
|
return voltage;
|
|
}
|
|
|
|
@@ -240,6 +246,11 @@ static int __devinit jz_battery_probe(st
|
|
struct jz_battery *jz_battery;
|
|
struct power_supply *battery;
|
|
|
|
+ if (!pdata) {
|
|
+ dev_err(&pdev->dev, "No platform_data supplied\n");
|
|
+ return -ENXIO;
|
|
+ }
|
|
+
|
|
jz_battery = kzalloc(sizeof(*jz_battery), GFP_KERNEL);
|
|
if (!jz_battery) {
|
|
dev_err(&pdev->dev, "Failed to allocate driver structure\n");
|
|
@@ -291,6 +302,7 @@ static int __devinit jz_battery_probe(st
|
|
jz_battery->pdev = pdev;
|
|
|
|
init_completion(&jz_battery->read_completion);
|
|
+ mutex_init(&jz_battery->lock);
|
|
|
|
INIT_DELAYED_WORK(&jz_battery->work, jz_battery_work);
|
|
|