[PATCH] staging: iio: adis16203: Use devm_iio_device_register
Lars-Peter Clausen
lars at metafoo.de
Thu Jul 17 20:47:09 UTC 2014
On 07/17/2014 10:40 PM, Himangi Saraogi wrote:
> This patch introduces the use of iio_device_register and does away with
> the call to the corressponding unregister function in the probe and
> remove functions of the driver respectively.
>
> Signed-off-by: Himangi Saraogi <himangi774 at gmail.com>
> Acked-by: Julia Lawall <julia.lawall at lip6.fr>
No, you changed the relative order in which iio_device_unregister() and
adis_cleanup_buffer_and_trigger() are called, this opens up the way for race
conditions. Rule of thumb: Don't convert drivers to managed functions if
this will change the order in which functions will called on device removal.
- Lars
> ---
> drivers/staging/iio/accel/adis16203_core.c | 3 +--
> 1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/drivers/staging/iio/accel/adis16203_core.c b/drivers/staging/iio/accel/adis16203_core.c
> index 409a28e..5077779 100644
> --- a/drivers/staging/iio/accel/adis16203_core.c
> +++ b/drivers/staging/iio/accel/adis16203_core.c
> @@ -175,7 +175,7 @@ static int adis16203_probe(struct spi_device *spi)
> if (ret)
> goto error_cleanup_buffer_trigger;
>
> - ret = iio_device_register(indio_dev);
> + ret = devm_iio_device_register(&spi->dev, indio_dev);
> if (ret)
> goto error_cleanup_buffer_trigger;
>
> @@ -191,7 +191,6 @@ static int adis16203_remove(struct spi_device *spi)
> struct iio_dev *indio_dev = spi_get_drvdata(spi);
> struct adis *st = iio_priv(indio_dev);
>
> - iio_device_unregister(indio_dev);
> adis_cleanup_buffer_and_trigger(st, indio_dev);
>
> return 0;
>
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