[PATCH v3] iio: adc: at91-sama5d2_adc: remove dead code in `at91_adc_probe`

[PATCH v3] iio: adc: at91-sama5d2_adc: remove dead code in `at91_adc_probe`

[Cheng Ziqiu]

From the comment of platform_get_irq, it only returns non-zero IRQ
number and negative error number, other than zero.

Fix this by removing the if condition.

Signed-off-by: Cheng Ziqiu <chengziqiu@hust.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>
---
v2->v3: Change subject to make it regular.
v1->v2: Change commit message from SoB to Reviewed-by.
 drivers/iio/adc/at91-sama5d2_adc.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 50d02e5fc6fc..168399092590 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -2400,12 +2400,8 @@ static int at91_adc_probe(struct platform_device *pdev)
 	st->dma_st.phys_addr = res->start;
 
 	st->irq = platform_get_irq(pdev, 0);
-	if (st->irq <= 0) {
-		if (!st->irq)
-			st->irq = -ENXIO;
-
+	if (st->irq < 0)
 		return st->irq;
-	}
 
 	st->per_clk = devm_clk_get(&pdev->dev, "adc_clk");
 	if (IS_ERR(st->per_clk))
-- 
2.34.1


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Re: [PATCH v3] iio: adc: at91-sama5d2_adc: remove dead code in `at91_adc_probe`

[Jonathan Cameron]

On Tue, 14 Mar 2023 10:12:23 +0000
<Claudiu.Beznea@microchip.com> wrote:

> On 14.03.2023 09:01, Cheng Ziqiu wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> >   
> >>From the comment of platform_get_irq, it only returns non-zero IRQ  
> > number and negative error number, other than zero.
> > 
> > Fix this by removing the if condition.
> > 
> > Signed-off-by: Cheng Ziqiu <chengziqiu@hust.edu.cn>
> > Reviewed-by: Dongliang Mu <dzm91@hust.edu.cn>  
> 
> Reviewed-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Applied to the togreg branch of iio.git - initially pushed out as testing for 0-day to
take a look at it.

Thanks,

Jonathan

> 
> 
> > ---
> > v2->v3: Change subject to make it regular.
> > v1->v2: Change commit message from SoB to Reviewed-by.
> >  drivers/iio/adc/at91-sama5d2_adc.c | 6 +-----
> >  1 file changed, 1 insertion(+), 5 deletions(-)
> > 
> > diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
> > index 50d02e5fc6fc..168399092590 100644
> > --- a/drivers/iio/adc/at91-sama5d2_adc.c
> > +++ b/drivers/iio/adc/at91-sama5d2_adc.c
> > @@ -2400,12 +2400,8 @@ static int at91_adc_probe(struct platform_device *pdev)
> >         st->dma_st.phys_addr = res->start;
> > 
> >         st->irq = platform_get_irq(pdev, 0);
> > -       if (st->irq <= 0) {
> > -               if (!st->irq)
> > -                       st->irq = -ENXIO;
> > -
> > +       if (st->irq < 0)
> >                 return st->irq;
> > -       }
> > 
> >         st->per_clk = devm_clk_get(&pdev->dev, "adc_clk");
> >         if (IS_ERR(st->per_clk))
> > --
> > 2.34.1
> >   
> 


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