From: Lars-Peter Clausen Date: Sat, 22 Sep 2012 08:56:00 +0000 (+0100) Subject: staging:iio:sca3000: Do not return a error in remove function X-Git-Tag: firefly_0821_release~3680^2~1977^2~50^2~7 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=67ad4e08dcc772153fda90cc747cfc9e03ab44f6;p=firefly-linux-kernel-4.4.55.git staging:iio:sca3000: Do not return a error in remove function In the Linux device driver model the remove callback is not allowed to fail and the device will be removed regardless of the return value of the remove callback. So if we abort in the remove function and do not free all resources we will create a resource leak. Also all kinds of undefined behaviour are expected to happen since the IIO device is still there while its parent is already gone. The errors which the driver tries to handle in the remove function are non-critical, so we can just ignore them and continue to free all resources and remove the IIO device. Signed-off-by: Lars-Peter Clausen Signed-off-by: Jonathan Cameron --- diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c index 6d72d97fb9e5..ffd1697a9db0 100644 --- a/drivers/staging/iio/accel/sca3000_core.c +++ b/drivers/staging/iio/accel/sca3000_core.c @@ -1237,11 +1237,9 @@ static int __devexit sca3000_remove(struct spi_device *spi) { struct iio_dev *indio_dev = spi_get_drvdata(spi); struct sca3000_state *st = iio_priv(indio_dev); - int ret; + /* Must ensure no interrupts can be generated after this!*/ - ret = sca3000_stop_all_interrupts(st); - if (ret) - return ret; + sca3000_stop_all_interrupts(st); if (spi->irq) free_irq(spi->irq, indio_dev); iio_device_unregister(indio_dev);