linux-kernel - Re: [PATCH V5 1/3] pci: Add PCIe driver for Samsung Exynos

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Message-id: <00be01ce6d81$39743950$ac5cabf0$@samsung.com>
Date:	Thu, 20 Jun 2013 15:41:42 +0900
From:	Jingoo Han <jg1.han@...sung.com>
To:	'Arnd Bergmann' <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	'Thomas Petazzoni' <thomas.petazzoni@...e-electrons.com>,
	'Jason Gunthorpe' <jgunthorpe@...idianresearch.com>,
	linux-samsung-soc@...r.kernel.org,
	'Siva Reddy Kallam' <siva.kallam@...sung.com>,
	'Surendranath Gurivireddy Balla' <suren.reddy@...sung.com>,
	linux-pci@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	'Thierry Reding' <thierry.reding@...onic-design.de>,
	linux-kernel@...r.kernel.org,
	'Grant Likely' <grant.likely@...retlab.ca>,
	'Kukjin Kim' <kgene.kim@...sung.com>,
	'Thomas Abraham' <thomas.abraham@...aro.org>,
	'Bjorn Helgaas' <bhelgaas@...gle.com>,
	'Andrew Murray' <andrew.murray@....com>,
	Jingoo Han <jg1.han@...sung.com>
Subject: Re: [PATCH V5 1/3] pci: Add PCIe driver for Samsung Exynos

On Wednesday, June 19, 2013 9:43 PM, Arnd Bergmann wrote:
> On Wednesday 19 June 2013, Jingoo Han wrote:
> > Then, do you mean the following?
> >
> > static int __exit exynos_pcie_remove(struct platform_device *pdev)
> > {
> >         struct pcie_port *pp = platform_get_drvdata(pdev);
> >
> >         clk_disable_unprepare(pp->bus_clk);
> >         clk_disable_unprepare(pp->clk);
> >
> >         return 0;
> > }
> >
> > static struct platform_driver exynos_pcie_driver = {
> >         .remove = __exit_p(exynos_pcie_remove),
> >
> > [.....]
> >
> > /* Exynos PCIe driver does not allow module unload */
> >
> > static int __init pcie_init(void)
> > {
> >         hook_fault_code(16 + 6, exynos_pcie_abort, SIGBUS, 0,
> >                         "imprecise external abort");
> >
> >         platform_driver_probe(&exynos_pcie_driver, exynos_pcie_probe);
> >
> >         return 0;
> > }
> > subsys_initcall(pcie_init);
> >
> > MODULE_AUTHOR("Jingoo Han <jg1.han@...sung.com>");
> > MODULE_DESCRIPTION("Samsung PCIe host controller driver");
> > MODULE_LICENSE("GPLv2");
> >
> 
> Yes, this looks good. I would probably use platform_driver_register
> rather than platform_driver_probe, but that is your choice. using
> platform_driver_probe() mean you cannot deal with deferred probing.

Hi Arnd,

Thank you for your reply. :)
I will send PATCH v6, soon.
I really appreciate your comments.

Hi Thomas Abraham, Kukjin Kim,
Thank you for your support.
It is very helpful.


Best regards,
Jingoo Han


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