linux-kernel - Re: linux-next: manual merge of the dmaengine tree with Linus' tree

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Message-ID: <ZOS/Kfmw3uvi1XMx@matsya>
Date:   Tue, 22 Aug 2023 19:29:05 +0530
From:   Vinod Koul <vkoul@...nel.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Subject: Re: linux-next: manual merge of the dmaengine tree with Linus' tree

On 22-08-23, 15:13, Stephen Rothwell wrote:
> Hi all,
> 
> Today's linux-next merge of the dmaengine tree got a conflict in:
> 
>   drivers/dma/mcf-edma.c
> 
> between commit:
> 
>   0a46781c89de ("dmaengine: mcf-edma: Fix a potential un-allocated memory access")
> 
> from Linus' tree and commit:
> 
>   923b13838892 ("dmaengine: mcf-edma: Use struct_size()")
> 
> from the dmaengine tree.
> 
> I fixed it up (see below) and can carry the fix as necessary. This
> is now fixed as far as linux-next is concerned, but any non trivial
> conflicts should be mentioned to your upstream maintainer when your tree
> is submitted for merging.  You may also want to consider cooperating
> with the maintainer of the conflicting tree to minimise any particularly
> complex conflicts.

Thanks for the merge, it lgtm


> 
> -- 
> Cheers,
> Stephen Rothwell
> 
> diff --cc drivers/dma/mcf-edma.c
> index 9413fad08a60,28304dd8763a..000000000000
> --- a/drivers/dma/mcf-edma.c
> +++ b/drivers/dma/mcf-edma.c
> @@@ -190,15 -189,9 +189,15 @@@ static int mcf_edma_probe(struct platfo
>   		return -EINVAL;
>   	}
>   
>  -	chans = pdata->dma_channels;
>  +	if (!pdata->dma_channels) {
>  +		dev_info(&pdev->dev, "setting default channel number to 64");
>  +		chans = 64;
>  +	} else {
>  +		chans = pdata->dma_channels;
>  +	}
>  +
> - 	len = sizeof(*mcf_edma) + sizeof(*mcf_chan) * chans;
> - 	mcf_edma = devm_kzalloc(&pdev->dev, len, GFP_KERNEL);
> + 	mcf_edma = devm_kzalloc(&pdev->dev, struct_size(mcf_edma, chans, chans),
> + 				GFP_KERNEL);
>   	if (!mcf_edma)
>   		return -ENOMEM;
>   



-- 
~Vinod