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iio:light:stk3310: move device register to end of probe 

iio_device_register should be the last operation during probe. Therefor
move up interrupt setup code and while at it, change the check for invalid
values of client->irq to be smaller than zero.
Fixes: 3dd477acbd ("iio: light: Add threshold interrupt support for STK3310")

As the device_register makes the userspace interfaces of the device available
it is possible for requests to come in before the probe sequence has finished.
This can lead to unhandled interrupts and similar.

Signed-off-by: Hartmut Knaack <knaack.h@gmx.de>
Reviewed-by: Tiberiu Breana <tiberiu.a.breana@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Hartmut Knaack 2015-07-09 23:51:29 +02:00 committed by Jonathan Cameron
parent c5d0db0690
commit 037e966f2d
1 changed files with 7 additions and 7 deletions
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14
drivers/iio/light/stk3310.c
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@ -608,13 +608,7 @@ static int stk3310_probe(struct i2c_client *client,
if (ret < 0)
return ret;
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "device_register failed\n");
stk3310_set_state(data, STK3310_STATE_STANDBY);
}
if (client->irq <= 0)
if (client->irq < 0)
client->irq = stk3310_gpio_probe(client);
if (client->irq >= 0) {
@ -629,6 +623,12 @@ static int stk3310_probe(struct i2c_client *client,
client->irq);
}
ret = iio_device_register(indio_dev);
if (ret < 0) {
dev_err(&client->dev, "device_register failed\n");
stk3310_set_state(data, STK3310_STATE_STANDBY);
}
return ret;
}