On Wed, Aug 28, 2013 at 06:43:08PM +0200, Sebastian Andrzej Siewior wrote: > * Zubair Lutfullah | 2013-08-25 23:45:24 [+0100]: > > >diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c > >index a952538..ae2202b 100644 > >--- a/drivers/iio/adc/ti_am335x_adc.c > >+++ b/drivers/iio/adc/ti_am335x_adc.c > >@@ -231,28 +406,56 @@ static int tiadc_probe(struct platform_device *pdev) > … > >+err_free_device: > >+ iio_device_free(indio_dev); > > I am not sure about this one. If I understand correctly, if devm_iio_device_alloc is successful earlier in the code and subsequent stuff fails. Then the code jumps to err_free_device and this is needed. > > >+err_ret: > > return err; > > } > > > >@@ -262,11 +465,14 @@ static int tiadc_remove(struct platform_device *pdev) > > struct tiadc_device *adc_dev = iio_priv(indio_dev); > > u32 step_en; > > > >+ free_irq(adc_dev->irq, indio_dev); > > iio_device_unregister(indio_dev); > >+ iio_buffer_unregister(indio_dev); > > tiadc_channels_remove(indio_dev); > > > > step_en = get_adc_step_mask(adc_dev); > > am335x_tsc_se_clr(adc_dev->mfd_tscadc, step_en); > >+ iio_device_free(indio_dev); > > But this one is wrong. The will be removed via dev_res() and if you do > it here as well then dev_res() will decrement the reference of an unused > object. I was unaware of this aspect. *but* iio_simple_dummy.c has it in its remove function. And I just checked and found it in several drivers as well. I'll leave this to the more experienced folks on the list.. > > > > return 0; > > } > > Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
