linux-kernel - Re: linux-next: manual merge of the arm64 tree with Linus' tree

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Date:   Thu, 19 Oct 2017 13:50:05 +0100
From:   Lorenzo Pieralisi <lorenzo.pieralisi@....com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Hanjun Guo <hanjun.guo@...aro.org>,
        Robin Murphy <robin.murphy@....com>,
        Nate Watterson <nwatters@...eaurora.org>,
        linux-arm-kernel@...ts.infradead.org,
        Linux-Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        will.deacon@....com
Subject: Re: linux-next: manual merge of the arm64 tree with Linus' tree

[+Will]

On Thu, Oct 19, 2017 at 12:28:33PM +0100, Mark Brown wrote:
> Hi Catalin,
> 
> Today's linux-next merge of the arm64 tree got a conflict in:
> 
>   drivers/acpi/arm64/iort.c
> 
> between commit:
> 
>   37f6b42e9c296 ("ACPI/IORT: Fix PCI ACS enablement")
> 
> from Linus' tree and commit:
> 
>   896dd2c324842 ("ACPI/IORT: Make platform devices initialization code SMMU agnostic")
> 
> from the arm64 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.
> 
> diff --cc drivers/acpi/arm64/iort.c
> index de56394dd161,7dc964f4d8f1..000000000000
> --- a/drivers/acpi/arm64/iort.c
> +++ b/drivers/acpi/arm64/iort.c
> @@@ -1215,7 -1326,7 +1357,8 @@@ static void __init iort_init_platform_d
>   	struct acpi_table_iort *iort;
>   	struct fwnode_handle *fwnode;
>   	int i, ret;
>  +	bool acs_enabled = false;
> + 	const struct iort_dev_config *ops;
>   
>   	/*
>   	 * iort_table and iort both point to the start of IORT table, but
> @@@ -1235,12 -1346,8 +1378,11 @@@
>   			return;
>   		}
>   
>  +		if (!acs_enabled)
>  +			acs_enabled = iort_enable_acs(iort_node);
>  +
> - 		if ((iort_node->type == ACPI_IORT_NODE_SMMU) ||
> - 			(iort_node->type == ACPI_IORT_NODE_SMMU_V3)) {
> - 
> + 		ops = iort_get_dev_cfg(iort_node);
> + 		if (ops) {
>   			fwnode = acpi_alloc_fwnode_static();
>   			if (!fwnode)
>   				return;

Hi Mark,

it is expected and that's the right conflict resolution:

https://marc.info/?l=linux-arm-kernel&m=150817031118241&w=2

Thank you,
Lorenzo