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From: Lizhi Hou <lizhi.hou@amd.com>
To: Yue Haibing <yuehaibing@huawei.com>, <brian.xu@amd.com>,
	<raj.kumar.rampelli@amd.com>, <vkoul@kernel.org>,
	<michal.simek@amd.com>, <sonal.santan@amd.com>,
	<max.zhen@amd.com>
Cc: <dmaengine@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH -next] dmaengine: xilinx: xdma: Fix NULL vs IS_ERR() bug
Date: Tue, 20 Aug 2024 08:29:22 -0700	[thread overview]
Message-ID: <d28a5f5c-9430-11a7-2330-84e1e781fd1d@amd.com> (raw)
In-Reply-To: <20240820132827.52108-1-yuehaibing@huawei.com>

Please see: 
https://lore.kernel.org/dmaengine/20240819193641.600176-1-harshit.m.mogalapalli@oracle.com/


Thanks,

Lizhi

On 8/20/24 06:28, Yue Haibing wrote:
> devm_regmap_init_mmio() never returns NULL pointer, it will
> return ERR_PTR() when it fails, so check it with IS_ERR().
>
> Fixes: 17ce252266c7 ("dmaengine: xilinx: xdma: Add xilinx xdma driver")
> Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
> ---
>   drivers/dma/xilinx/xdma.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/dma/xilinx/xdma.c b/drivers/dma/xilinx/xdma.c
> index 718842fdaf98..44fae351f0a0 100644
> --- a/drivers/dma/xilinx/xdma.c
> +++ b/drivers/dma/xilinx/xdma.c
> @@ -1240,7 +1240,8 @@ static int xdma_probe(struct platform_device *pdev)
>   
>   	xdev->rmap = devm_regmap_init_mmio(&pdev->dev, reg_base,
>   					   &xdma_regmap_config);
> -	if (!xdev->rmap) {
> +	if (IS_ERR(xdev->rmap)) {
> +		ret = PTR_ERR(xdev->rmap);
>   		xdma_err(xdev, "config regmap failed: %d", ret);
>   		goto failed;
>   	}

      reply	other threads:[~2024-08-20 15:29 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-08-20 13:28 Yue Haibing
2024-08-20 15:29 ` Lizhi Hou [this message]

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