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Date:   Wed, 5 Jul 2023 09:47:41 -0700
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Subject: Re: [PATCH v1] drivers: xilinx: Fix Judgment of the return value of
 the devm_ioremap_resource function
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To:     Minjie Du <duminjie@vivo.com>, Brian Xu <brian.xu@amd.com>,
        "Raj Kumar Rampelli" <raj.kumar.rampelli@amd.com>,
        Vinod Koul <vkoul@kernel.org>,
        Michal Simek <michal.simek@amd.com>,
        "open list:XILINX XDMA DRIVER" <dmaengine@vger.kernel.org>,
        "moderated list:ARM/ZYNQ ARCHITECTURE" 
        <linux-arm-kernel@lists.infradead.org>,
        open list <linux-kernel@vger.kernel.org>
CC:     <opensource.kernel@vivo.com>
References: <20230704120458.11125-1-duminjie@vivo.com>
From:   Lizhi Hou <lizhi.hou@amd.com>
In-Reply-To: <20230704120458.11125-1-duminjie@vivo.com>
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Hi Minjie,

There was a patch created for this. Please see

https://lore.kernel.org/all/20230217062652.172480-1-yangyingliang@huawei.com/


Thanks,

Lizhi

On 7/4/23 05:04, Minjie Du wrote:
> IS_ERR() fix devm_ioremap_resource function return judge.
> Could you help check it out?
> Thank you!
>
> Signed-off-by: Minjie Du <duminjie@vivo.com>
> ---
>   drivers/dma/xilinx/xdma.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
> index 93ee298d5..ad5ff6335 100644
> --- a/drivers/dma/xilinx/xdma.c
> +++ b/drivers/dma/xilinx/xdma.c
> @@ -892,7 +892,7 @@ static int xdma_probe(struct platform_device *pdev)
>   	}
>   
>   	reg_base = devm_ioremap_resource(&pdev->dev, res);
> -	if (!reg_base) {
> +	if (IS_ERR(reg_base)) {
>   		xdma_err(xdev, "ioremap failed");
>   		goto failed;
>   	}