linux-kernel - Re: [PATCH] dmaengine: ti: omap-dma: Add cleanup in omap_dma

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Message-ID: <2e9382ff-1940-2247-4335-a5c1229d2cee@ti.com>
Date:   Fri, 16 Aug 2019 10:22:40 +0300
From:   Peter Ujfalusi <peter.ujfalusi@...com>
To:     Wenwen Wang <wenwen@...uga.edu>
CC:     Vinod Koul <vkoul@...nel.org>,
        Dan Williams <dan.j.williams@...el.com>,
        Enrico Weigelt <info@...ux.net>,
        Allison Randal <allison@...utok.net>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        "open list:DMA GENERIC OFFLOAD ENGINE SUBSYSTEM" 
        <dmaengine@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: ti: omap-dma: Add cleanup in omap_dma_probe()



On 16/08/2019 9.56, Wenwen Wang wrote:
> If devm_request_irq() fails to disable all interrupts, no cleanup is
> performed before retuning the error. To fix this issue, invoke
> omap_dma_free() to do the cleanup.

Thank you,
Acked-by: Peter Ujfalusi <peter.ujfalusi@...com>

> Signed-off-by: Wenwen Wang <wenwen@...uga.edu>
> ---
>  drivers/dma/ti/omap-dma.c | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c
> index ba2489d..5158b58 100644
> --- a/drivers/dma/ti/omap-dma.c
> +++ b/drivers/dma/ti/omap-dma.c
> @@ -1540,8 +1540,10 @@ static int omap_dma_probe(struct platform_device *pdev)
>  
>  		rc = devm_request_irq(&pdev->dev, irq, omap_dma_irq,
>  				      IRQF_SHARED, "omap-dma-engine", od);
> -		if (rc)
> +		if (rc) {
> +			omap_dma_free(od);
>  			return rc;
> +		}
>  	}
>  
>  	if (omap_dma_glbl_read(od, CAPS_0) & CAPS_0_SUPPORT_LL123)
> 

- Péter

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