Messages in this thread | | | Subject | Re: [PATCH] IIO: ADC: stm32-dfsdm: avoid unused-variable warning | From | Robin Murphy <> | Date | Thu, 11 Jan 2018 14:27:29 +0000 |
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On 11/01/18 10:34, Arnd Bergmann wrote: > Building with CONFIG_OF disabled produces a compiler warning: > > drivers/iio/adc/stm32-dfsdm-core.c: In function 'stm32_dfsdm_probe': > drivers/iio/adc/stm32-dfsdm-core.c:245:22: error: unused variable 'pnode' [-Werror=unused-variable] > > This removes the variable and open-codes it in the only place > it gets used to avoid that warning. > > Fixes: bed73904e76f ("IIO: ADC: add stm32 DFSDM core support") > Signed-off-by: Arnd Bergmann <arnd@arndb.de> > --- > drivers/iio/adc/stm32-dfsdm-core.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c > index 72427414db7f..6cd655f8239b 100644 > --- a/drivers/iio/adc/stm32-dfsdm-core.c > +++ b/drivers/iio/adc/stm32-dfsdm-core.c > @@ -242,7 +242,6 @@ MODULE_DEVICE_TABLE(of, stm32_dfsdm_of_match); > static int stm32_dfsdm_probe(struct platform_device *pdev) > { > struct dfsdm_priv *priv; > - struct device_node *pnode = pdev->dev.of_node; > const struct of_device_id *of_id; > const struct stm32_dfsdm_dev_data *dev_data; > struct stm32_dfsdm *dfsdm; > @@ -254,7 +253,7 @@ static int stm32_dfsdm_probe(struct platform_device *pdev) > > priv->pdev = pdev; > > - of_id = of_match_node(stm32_dfsdm_of_match, pnode); > + of_id = of_match_node(stm32_dfsdm_of_match, pdev->dev.of_node); > if (!of_id->data) { > dev_err(&pdev->dev, "Data associated to device is missing\n"); > return -EINVAL;
FWIW, it looks like this whole lot could be cleaned up by using of_device_get_match_data().
Robin.
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