linux-kernel - Re: [PATCHv4 4/7] hwspinlock/core: add common OF helpers

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Date:	Fri, 14 Mar 2014 10:58:45 +0200
From:	Ohad Ben-Cohen <ohad@...ery.com>
To:	Suman Anna <s-anna@...com>
Cc:	Bjorn Andersson <bjorn@...o.se>,
	Mark Rutland <mark.rutland@....com>,
	Tony Lindgren <tony@...mide.com>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Grant Likely <grant.likely@...retlab.ca>
Subject: Re: [PATCHv4 4/7] hwspinlock/core: add common OF helpers

Hi Suman,

On Tue, Mar 4, 2014 at 7:38 PM, Suman Anna <s-anna@...com> wrote:
>>>> Do you have any objections to the return code convention change?
>>>
>>> Unless strictly needed, I prefer we don't switch to the ERR_PTR code
>>> convention, as it reduces code readability and increases chances of
>>> user bugs.
>>>
>>> In our case, switching to ERR_PTR and friends seems only to optimize a
>>> few error paths, and I'm not sure it's a big win over simplicity.
>>
>>
>> When introducing the ability to reference a hwspin lock via a phandle
>> in device tree it makes a big difference to be able to differ between
>> the case of "initialization failed" or "device not yet probed"; so
>> that the client knows if it should fail or retry later.
>>
>
> Can you confirm the changes you want me to make, so that I can refresh and
> post a v5 for 3.15?

Sorry, I missed your replies for some reason.

I prefer we stick with the current error handling code because I find
the alternative inferior (as long as it's not strictly needed).

Thanks,
Ohad.
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