[PATCHv3] dmaengine: bestcomm: use platform machinery to get irq

[Christophe Leroy (CS GROUP)]

Le 18/09/2026 à 02:18, Rosen Penev a écrit :
> platform_get_irq() avoids having to explicitly map and dispose of an irq
> by having the platform_device machinery take care of it.
> 
> This requires replacing the device_node with a platform_device in the
> bcom_eng struct so that platform_get_irq() can use it.
> 
> Conveniently, this also allows getting rid of of_node_get and
> of_node_put as the platform_device machinery also handles that.
> 
> Adjust the goto labels in bcom_task_alloc to match what is being freed.
> 
> Signed-off-by: Rosen Penev <rosenp at gmail.com>
> ---
>   v3: drop stale description
>   v2: resend
>   drivers/dma/bestcomm/bestcomm.c            | 47 ++++++++--------------
>   include/linux/fsl/bestcomm/bestcomm_priv.h |  2 +-
>   2 files changed, 18 insertions(+), 31 deletions(-)
> 
> diff --git a/drivers/dma/bestcomm/bestcomm.c b/drivers/dma/bestcomm/bestcomm.c
> index 241a91936fe8..1006030ff167 100644
> --- a/drivers/dma/bestcomm/bestcomm.c
> +++ b/drivers/dma/bestcomm/bestcomm.c
> @@ -99,17 +102,12 @@ bcom_task_alloc(int bd_count, int bd_size, int priv_size)
>   
>   	return tsk;
>   
> -error:
> -	if (tsk) {
> -		if (tsk->irq)
> -			irq_dispose_mapping(tsk->irq);
> -		bcom_sram_free(tsk->bd);
> -		kfree(tsk->cookie);
> -		kfree(tsk);
> -	}
> -
> +err3:
> +	kfree(tsk->cookie);
> +err2:
> +	kfree(tsk);
> +err1:
>   	bcom_eng->tdt[tasknum].stop = 0;
> -

This blank line removal is unnecessary.

>   	return NULL;
>   }
>   EXPORT_SYMBOL_GPL(bcom_task_alloc);