lp8727_charger: Add error check routine on probe()
Add error checking on initializing registers and interrupt handler.
Initializing registers - lp8727_init_device()
: check i2c error during probing the driver.
Initializing interrupt handler - lp8727_intr_config()
: check an error on creating the irq thread.
If an error occurs on probing lp8727 driver, allocated lp8727 driver memory is freed.
Signed-off-by: Milo(Woogyom) Kim <milo.kim@ti.com>
Signed-off-by: Anton Vorontsov <anton.vorontsov@linaro.org>
diff --git a/drivers/power/lp8727_charger.c b/drivers/power/lp8727_charger.c
index d23a3bc..6239bd7 100644
--- a/drivers/power/lp8727_charger.c
+++ b/drivers/power/lp8727_charger.c
@@ -138,17 +138,22 @@
return (id >= ID_TA && id <= ID_USB_CHG) ? 1 : 0;
}
-static void lp8727_init_device(struct lp8727_chg *pchg)
+static int lp8727_init_device(struct lp8727_chg *pchg)
{
u8 val;
+ int ret;
val = ID200_EN | ADC_EN | CP_EN;
- if (lp8727_i2c_write_byte(pchg, CTRL1, &val))
- dev_err(pchg->dev, "i2c write err : addr=0x%.2x\n", CTRL1);
+ ret = lp8727_i2c_write_byte(pchg, CTRL1, &val);
+ if (ret)
+ return ret;
val = INT_EN | CHGDET_EN;
- if (lp8727_i2c_write_byte(pchg, CTRL2, &val))
- dev_err(pchg->dev, "i2c write err : addr=0x%.2x\n", CTRL2);
+ ret = lp8727_i2c_write_byte(pchg, CTRL2, &val);
+ if (ret)
+ return ret;
+
+ return 0;
}
static int lp8727_is_dedicated_charger(struct lp8727_chg *pchg)
@@ -245,20 +250,22 @@
return IRQ_HANDLED;
}
-static void lp8727_intr_config(struct lp8727_chg *pchg)
+static int lp8727_intr_config(struct lp8727_chg *pchg)
{
INIT_DELAYED_WORK(&pchg->work, lp8727_delayed_func);
pchg->irqthread = create_singlethread_workqueue("lp8727-irqthd");
- if (!pchg->irqthread)
+ if (!pchg->irqthread) {
dev_err(pchg->dev, "can not create thread for lp8727\n");
-
- if (request_threaded_irq(pchg->client->irq,
- NULL,
- lp8727_isr_func,
- IRQF_TRIGGER_FALLING, "lp8727_irq", pchg)) {
- dev_err(pchg->dev, "lp8727 irq can not be registered\n");
+ return -ENOMEM;
}
+
+ return request_threaded_irq(pchg->client->irq,
+ NULL,
+ lp8727_isr_func,
+ IRQF_TRIGGER_FALLING,
+ "lp8727_irq",
+ pchg);
}
static enum power_supply_property lp8727_charger_prop[] = {
@@ -440,15 +447,29 @@
mutex_init(&pchg->xfer_lock);
- lp8727_init_device(pchg);
- lp8727_intr_config(pchg);
+ ret = lp8727_init_device(pchg);
+ if (ret) {
+ dev_err(pchg->dev, "i2c communication err: %d", ret);
+ goto error;
+ }
+
+ ret = lp8727_intr_config(pchg);
+ if (ret) {
+ dev_err(pchg->dev, "irq handler err: %d", ret);
+ goto error;
+ }
ret = lp8727_register_psy(pchg);
- if (ret)
- dev_err(pchg->dev,
- "can not register power supplies. err=%d", ret);
+ if (ret) {
+ dev_err(pchg->dev, "power supplies register err: %d", ret);
+ goto error;
+ }
return 0;
+
+error:
+ kfree(pchg);
+ return ret;
}
static int __devexit lp8727_remove(struct i2c_client *cl)