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authorLinus Torvalds <torvalds@linux-foundation.org>2016-02-25 18:42:08 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-02-25 18:42:08 -0800
commit1ebe3839e66ae85e065157ba9d6f7923ad8d8fbf (patch)
tree8ed65e1922a16eda1c7ae800da46ac2758774472 /drivers
parent6dc390ad61ac8dfca5fa9b0823981fb6f7ec17a0 (diff)
parent9aafabc7fece13c8e2a1f680908c73ee19f0f79b (diff)
Merge tag 'for-v4.5-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply fixes from Sebastian Reichel: "Add a regression fix for changed sysfs path of bq27xxx_battery and update MAINTAINERS file" * tag 'for-v4.5-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: power: bq27xxx_battery: Restore device name MAINTAINERS: update bq27xxx driver
Diffstat (limited to 'drivers')
-rw-r--r--drivers/power/bq27xxx_battery_i2c.c37
1 files changed, 34 insertions, 3 deletions
diff --git a/drivers/power/bq27xxx_battery_i2c.c b/drivers/power/bq27xxx_battery_i2c.c
index 9429e66be096..8eafc6f0df88 100644
--- a/drivers/power/bq27xxx_battery_i2c.c
+++ b/drivers/power/bq27xxx_battery_i2c.c
@@ -21,6 +21,9 @@
#include <linux/power/bq27xxx_battery.h>
+static DEFINE_IDR(battery_id);
+static DEFINE_MUTEX(battery_mutex);
+
static irqreturn_t bq27xxx_battery_irq_handler_thread(int irq, void *data)
{
struct bq27xxx_device_info *di = data;
@@ -70,19 +73,33 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client,
{
struct bq27xxx_device_info *di;
int ret;
+ char *name;
+ int num;
+
+ /* Get new ID for the new battery device */
+ mutex_lock(&battery_mutex);
+ num = idr_alloc(&battery_id, client, 0, 0, GFP_KERNEL);
+ mutex_unlock(&battery_mutex);
+ if (num < 0)
+ return num;
+
+ name = devm_kasprintf(&client->dev, GFP_KERNEL, "%s-%d", id->name, num);
+ if (!name)
+ goto err_mem;
di = devm_kzalloc(&client->dev, sizeof(*di), GFP_KERNEL);
if (!di)
- return -ENOMEM;
+ goto err_mem;
+ di->id = num;
di->dev = &client->dev;
di->chip = id->driver_data;
- di->name = id->name;
+ di->name = name;
di->bus.read = bq27xxx_battery_i2c_read;
ret = bq27xxx_battery_setup(di);
if (ret)
- return ret;
+ goto err_failed;
/* Schedule a polling after about 1 min */
schedule_delayed_work(&di->work, 60 * HZ);
@@ -103,6 +120,16 @@ static int bq27xxx_battery_i2c_probe(struct i2c_client *client,
}
return 0;
+
+err_mem:
+ ret = -ENOMEM;
+
+err_failed:
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, num);
+ mutex_unlock(&battery_mutex);
+
+ return ret;
}
static int bq27xxx_battery_i2c_remove(struct i2c_client *client)
@@ -111,6 +138,10 @@ static int bq27xxx_battery_i2c_remove(struct i2c_client *client)
bq27xxx_battery_teardown(di);
+ mutex_lock(&battery_mutex);
+ idr_remove(&battery_id, di->id);
+ mutex_unlock(&battery_mutex);
+
return 0;
}