[PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[Siddharth Vadapalli]

The of_k3_udma_glue_parse_chn_by_id() helper function erroneously
invokes "of_node_put()" on the "udmax_np" device-node passed to it,
without having incremented its reference at any point. Fix it.

Fixes: 81a1f90f20af ("dmaengine: ti: k3-udma-glue: Add function to parse channel by ID")
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
---

Hello,

This patch is based on commit
4b377b4868ef kprobe/ftrace: fix build error due to bad function definition
of Mainline Linux.

Regards,
Siddharth.

 drivers/dma/ti/k3-udma-glue.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c
index c9b93055dc9d..f0a399cf45b2 100644
--- a/drivers/dma/ti/k3-udma-glue.c
+++ b/drivers/dma/ti/k3-udma-glue.c
@@ -200,12 +200,9 @@ of_k3_udma_glue_parse_chn_by_id(struct device_node *udmax_np, struct k3_udma_glu
 
 	ret = of_k3_udma_glue_parse(udmax_np, common);
 	if (ret)
-		goto out_put_spec;
+		return ret;
 
 	ret = of_k3_udma_glue_parse_chn_common(common, thread_id, tx_chn);
-
-out_put_spec:
-	of_node_put(udmax_np);
 	return ret;
 }
 
-- 
2.40.1

Re: [PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[Péter Ujfalusi]

On 18/05/2024 13:05, Siddharth Vadapalli wrote:
> The of_k3_udma_glue_parse_chn_by_id() helper function erroneously
> invokes "of_node_put()" on the "udmax_np" device-node passed to it,
> without having incremented its reference at any point. Fix it.

Acked-by: Peter Ujfalusi@gmail.com

> 
> Fixes: 81a1f90f20af ("dmaengine: ti: k3-udma-glue: Add function to parse channel by ID")
> Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
> ---
> 
> Hello,
> 
> This patch is based on commit
> 4b377b4868ef kprobe/ftrace: fix build error due to bad function definition
> of Mainline Linux.
> 
> Regards,
> Siddharth.
> 
>  drivers/dma/ti/k3-udma-glue.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/dma/ti/k3-udma-glue.c b/drivers/dma/ti/k3-udma-glue.c
> index c9b93055dc9d..f0a399cf45b2 100644
> --- a/drivers/dma/ti/k3-udma-glue.c
> +++ b/drivers/dma/ti/k3-udma-glue.c
> @@ -200,12 +200,9 @@ of_k3_udma_glue_parse_chn_by_id(struct device_node *udmax_np, struct k3_udma_glu
>  
>  	ret = of_k3_udma_glue_parse(udmax_np, common);
>  	if (ret)
> -		goto out_put_spec;
> +		return ret;
>  
>  	ret = of_k3_udma_glue_parse_chn_common(common, thread_id, tx_chn);
> -
> -out_put_spec:
> -	of_node_put(udmax_np);
>  	return ret;
>  }
>  

-- 
Péter

Re: [PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[Markus Elfring]

…
> without having incremented its reference at any point. …
                                           counter?

Regards,
Markus

Re: [PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[Markus Elfring]

…
> > without having incremented its reference at any point. Fix it.
>
> Acked-by: Peter Ujfalusi@gmail.com

Please improve the data representation for this tag.
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9#n468

Regards,
Markus

Re: [PATCH] dmaengine: ti: k3-udma-glue: Fix of_k3_udma_glue_parse_chn_by_id()

[Vinod Koul]

On 21-05-24, 20:22, Markus Elfring wrote:
> …
> > > without having incremented its reference at any point. Fix it.
> >
> > Acked-by: Peter Ujfalusi@gmail.com
> 
> Please improve the data representation for this tag.
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v6.9#n468

Please STOP wasting time of everyone. Go write some code which solves
something!

-- 
~Vinod