linux-kernel - Re: [PATCH] dmaengine: ioat: Fix error handling path

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Date:   Fri, 17 Nov 2017 14:44:17 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        "Williams, Dan J" <dan.j.williams@...el.com>,
        "Koul, Vinod" <vinod.koul@...el.com>,
        "bianpan2016@....com" <bianpan2016@....com>,
        "arvind.yadav.cs@...il.com" <arvind.yadav.cs@...il.com>,
        "kjlx@...pleofstupid.com" <kjlx@...pleofstupid.com>,
        "geliangtang@...il.com" <geliangtang@...il.com>
Cc:     "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: Re: [PATCH] dmaengine: ioat: Fix error handling path



On 11/17/2017 02:37 PM, Christophe JAILLET wrote:
> If the last test in 'ioat_dma_self_test()' fails, we must release all
> the allocated resources and not just part of them.
> 
> Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>

Good catch! Thanks! Acked-by: Dave Jiang <dave.jiang@...el.com>

> ---
>  drivers/dma/ioat/init.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dma/ioat/init.c b/drivers/dma/ioat/init.c
> index 2f31d3d0caa6..7792a9186f9c 100644
> --- a/drivers/dma/ioat/init.c
> +++ b/drivers/dma/ioat/init.c
> @@ -390,7 +390,7 @@ static int ioat_dma_self_test(struct ioatdma_device *ioat_dma)
>  	if (memcmp(src, dest, IOAT_TEST_SIZE)) {
>  		dev_err(dev, "Self-test copy failed compare, disabling\n");
>  		err = -ENODEV;
> -		goto free_resources;
> +		goto unmap_dma;
>  	}
>  
>  unmap_dma:
>