linux-kernel - Re: [PATCHv2 1/2] pci: spear: Use platform_driver_probe instead of platform_driver

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Message-ID: <54DD5CAF.9040006@mm-sol.com>
Date:	Fri, 13 Feb 2015 04:08:47 +0200
From:	Stanimir Varbanov <svarbanov@...sol.com>
To:	"Matwey V. Kornilov" <matwey@....msu.ru>
CC:	linux-kernel <linux-kernel@...r.kernel.org>,
	Bjorn Helgaas <bhelgaas@...gle.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Mohit KUMAR <mohit.kumar@...com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Viresh Kumar <viresh.kumar@...aro.org>
Subject: Re: [PATCHv2 1/2] pci: spear: Use platform_driver_probe instead of
 platform_driver_register

Hi,

On 02/12/2015 11:07 AM, Matwey V. Kornilov wrote:
> 2015-02-11 12:19 GMT+03:00 Stanimir Varbanov <svarbanov@...sol.com>:
>> please don't top posting.
>>
>> On 02/11/2015 10:38 AM, Matwey V. Kornilov wrote:HI
>>
>>> It sounds reasonable, but does current implementation support deferring?
>>
>>thor
>> yes, it uses deferred probe see devm_phy_get() and devm_clk_get() calls in
>> .probe and how the returned values are checked.
>>
>>> Struct  spear13xx_pcie_driver just dissapears from memory after init.
>>
>>
>> IMO this is expected because spear13xx_pcie_driver is annotated as
>> __initdata.
> 
> The question was how deferred probe had been expected to work? When
> probe has been deferred at first attempt, then second attempt
> performed after init section, so proble() function must be available,at
> but it is not. Isn't it?
> 

That is questionable, maybe it works by chance?.


regards,
Stan
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