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Date: Wed, 31 Jan 2024 09:41:15 -0600
From: Bjorn Helgaas <helgaas@kernel.org>
To: Frank Li <Frank.Li@nxp.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>, Jingoo Han <jingoohan1@gmail.com>,
	Gustavo Pimentel <gustavo.pimentel@synopsys.com>,
	Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>,
	Lorenzo Pieralisi <lpieralisi@kernel.org>,
	Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= <kw@linux.com>,
	Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>, imx@lists.linux.dev,
	linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
	devicetree@vger.kernel.org,
	Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>,
	Serge Semin <fancer.lancer@gmail.com>
Subject: Re: [PATCH 2/6] PCI: dwc: Change arguments of
 dw_pcie_prog_outbound_atu()
Message-ID: <20240131154115.GA587326@bhelgaas>
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In-Reply-To: <20240130-pme_msg-v1-2-d52b0add5c7c@nxp.com>

Nit: could the subject line be more specific than "change arguments"?
E.g., something about collecting dw_pcie_prog_outbound_atu() arguments
in a struct?  If you know that's the fundamental change, it's a lot
easier to read the commit log and the patch because you know the goal.

On Tue, Jan 30, 2024 at 07:45:27PM -0500, Frank Li wrote:
> From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> 
> This is a preparation before adding the Msg-type outbound iATU
> mapping. The respective update will require two more arguments added
> to __dw_pcie_prog_outbound_atu(). That will make the already
> complicated function prototype even more hard to comprehend accepting
> _eight_ arguments. In order to prevent that and keep the code
> more-or-less readable all the outbound iATU-related arguments are
> moved to the new config-structure: struct dw_pcie_ob_atu_cfg pointer
> to which shall be passed to dw_pcie_prog_outbound_atu(). The structure
> is supposed to be locally defined and populated with the outbound iATU
> settings implied by the caller context.
> 
> As a result of the denoted change there is no longer need in having
> the two distinctive methods for the Host and End-point outbound iATU
> setups since the corresponding code can directly call the
> dw_pcie_prog_outbound_atu() method with the config-structure
> populated. Thus dw_pcie_prog_ep_outbound_atu() is dropped.
> 
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Reviewed-by: Serge Semin <fancer.lancer@gmail.com>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> Signed-off-by: Frank Li <Frank.Li@nxp.com>
> ...