[PATCH -next] dmaengine: ste_dma40: Add missing IRQ check in d40_probe

[Ruan Jinjie]

Ping.

On 2023/7/24 22:41, Ruan Jinjie wrote:
> From: ruanjinjie <ruanjinjie at huawei.com>
> 
> Check for the return value of platform_get_irq(): if no interrupt
> is specified, it wouldn't make sense to call request_irq().
> 
> Fixes: 8d318a50b3d7 ("DMAENGINE: Support for ST-Ericssons DMA40 block v3")
> Signed-off-by: Ruan Jinjie <ruanjinjie at huawei.com>
> ---
>  drivers/dma/ste_dma40.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
> index 825001bde42c..89e82508c133 100644
> --- a/drivers/dma/ste_dma40.c
> +++ b/drivers/dma/ste_dma40.c
> @@ -3590,6 +3590,10 @@ static int __init d40_probe(struct platform_device *pdev)
>  	spin_lock_init(&base->lcla_pool.lock);
>  
>  	base->irq = platform_get_irq(pdev, 0);
> +	if (base->irq < 0) {
> +		ret = base->irq;
> +		goto destroy_cache;
> +	}
>  
>  	ret = request_irq(base->irq, d40_handle_interrupt, 0, D40_NAME, base);
>  	if (ret) {