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mfd: max8997: Fix possible NULL pointer dereference on i2c_new_dummy error
[pandora-kernel.git]
/
drivers
/
mfd
/
max8997.c
diff --git
a/drivers/mfd/max8997.c
b/drivers/mfd/max8997.c
index
5adede0
..
8cf7a01
100644
(file)
--- a/
drivers/mfd/max8997.c
+++ b/
drivers/mfd/max8997.c
@@
-208,10
+208,26
@@
static int max8997_i2c_probe(struct i2c_client *i2c,
mutex_init(&max8997->iolock);
max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
mutex_init(&max8997->iolock);
max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
+ if (!max8997->rtc) {
+ dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
+ return -ENODEV;
+ }
i2c_set_clientdata(max8997->rtc, max8997);
i2c_set_clientdata(max8997->rtc, max8997);
+
max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
+ if (!max8997->haptic) {
+ dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
+ ret = -ENODEV;
+ goto err_i2c_haptic;
+ }
i2c_set_clientdata(max8997->haptic, max8997);
i2c_set_clientdata(max8997->haptic, max8997);
+
max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
+ if (!max8997->muic) {
+ dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
+ ret = -ENODEV;
+ goto err_i2c_muic;
+ }
i2c_set_clientdata(max8997->muic, max8997);
pm_runtime_set_active(max8997->dev);
i2c_set_clientdata(max8997->muic, max8997);
pm_runtime_set_active(max8997->dev);
@@
-239,7
+255,9
@@
static int max8997_i2c_probe(struct i2c_client *i2c,
err_mfd:
mfd_remove_devices(max8997->dev);
i2c_unregister_device(max8997->muic);
err_mfd:
mfd_remove_devices(max8997->dev);
i2c_unregister_device(max8997->muic);
+err_i2c_muic:
i2c_unregister_device(max8997->haptic);
i2c_unregister_device(max8997->haptic);
+err_i2c_haptic:
i2c_unregister_device(max8997->rtc);
return ret;
}
i2c_unregister_device(max8997->rtc);
return ret;
}