dmaengine: ep93xx: Fix a NULL vs IS_ERR() check in probe()

[PATCH next] dmaengine: ep93xx: Fix a NULL vs IS_ERR() check in probe()

Posted by Dan Carpenter 2 months, 2 weeks ago

This was intended to be an IS_ERR() check, not a NULL check.  The
ep93xx_dma_of_probe() function doesn't return NULL pointers.

Fixes: 4e8ad5ed845b ("dmaengine: cirrus: Convert to DT for Cirrus EP93xx")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
---
 drivers/dma/ep93xx_dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
index d084bd123c1c..ca86b2b5a913 100644
--- a/drivers/dma/ep93xx_dma.c
+++ b/drivers/dma/ep93xx_dma.c
@@ -1504,7 +1504,7 @@ static int ep93xx_dma_probe(struct platform_device *pdev)
 	int ret;
 
 	edma = ep93xx_dma_of_probe(pdev);
-	if (!edma)
+	if (IS_ERR(edma))
 		return PTR_ERR(edma);
 
 	dma_dev = &edma->dma_dev;
-- 
2.45.2

Re: [PATCH next] dmaengine: ep93xx: Fix a NULL vs IS_ERR() check in probe()

Posted by Alexander Sverdlin 2 months, 2 weeks ago

Hi Dan,

thanks for fixing this!

On Fri, 2024-09-13 at 17:35 +0300, Dan Carpenter wrote:
> This was intended to be an IS_ERR() check, not a NULL check.  The
> ep93xx_dma_of_probe() function doesn't return NULL pointers.
> 
> Fixes: 4e8ad5ed845b ("dmaengine: cirrus: Convert to DT for Cirrus EP93xx")
> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>

Reviewed-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>

> ---
>  drivers/dma/ep93xx_dma.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/ep93xx_dma.c b/drivers/dma/ep93xx_dma.c
> index d084bd123c1c..ca86b2b5a913 100644
> --- a/drivers/dma/ep93xx_dma.c
> +++ b/drivers/dma/ep93xx_dma.c
> @@ -1504,7 +1504,7 @@ static int ep93xx_dma_probe(struct platform_device *pdev)
>  	int ret;
>  
>  	edma = ep93xx_dma_of_probe(pdev);
> -	if (!edma)
> +	if (IS_ERR(edma))
>  		return PTR_ERR(edma);
>  
>  	dma_dev = &edma->dma_dev;

-- 
Alexander Sverdlin.