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Input: adc-joystick - fix ordering in adc_joystick_probe()

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We should register the IIO buffer before we register the input device,
because as soon as the device is registered input handlers may attach to
it, resulting in a call to adc_joystick_open() which makes use of the said
buffer.

Acked-by: Artur Rojek <contact@artur-rojek.eu>
Link: https://lore.kernel.org/r/YskFh4NHnlcryMkk@google.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Dmitry Torokhov 2022-08-02 10:00:00 -07:00
parent e4bb7fee18
commit 7c744d0099
1 changed files with 8 additions and 7 deletions
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15
drivers/input/joystick/adc-joystick.c
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@ -222,13 +222,6 @@ static int adc_joystick_probe(struct platform_device *pdev)
if (error)
return error;
input_set_drvdata(input, joy);
error = input_register_device(input);
if (error) {
dev_err(dev, "Unable to register input device\n");
return error;
}
joy->buffer = iio_channel_get_all_cb(dev, adc_joystick_handle, joy);
if (IS_ERR(joy->buffer)) {
dev_err(dev, "Unable to allocate callback buffer\n");
@ -241,6 +234,14 @@ static int adc_joystick_probe(struct platform_device *pdev)
return error;
}
input_set_drvdata(input, joy);
error = input_register_device(input);
if (error) {
dev_err(dev, "Unable to register input device\n");
return error;
}
return 0;
}