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@xxxxxxxxx> Acked-by: Julia Lawall <julia.lawall@xxxxxxx>
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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