linux-kernel - Re: [PATCH] regulator: Don't print error in devm_regulator_bulk_get() on -EPROBE

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Date:	Wed, 16 Mar 2016 08:40:43 -0300
From:	Javier Martinez Canillas <javier@....samsung.com>
To:	Mark Brown <broonie@...nel.org>
Cc:	linux-kernel@...r.kernel.org, Liam Girdwood <lgirdwood@...il.com>
Subject: Re: [PATCH] regulator: Don't print error in devm_regulator_bulk_get()
 on -EPROBE_DEFER

Hello Mark,

On 03/16/2016 08:37 AM, Mark Brown wrote:
> On Wed, Mar 16, 2016 at 08:19:42AM -0300, Javier Martinez Canillas wrote:

[snip]

> 
>> Basically I want to get rid of things like this:
> 
>> [    1.438422] exynos-hdmi 14530000.hdmi: Failed to get supply 'vdd': -517
>> [    1.443638] [drm:hdmi_probe] *ERROR* failed to get regulators
>> [    1.449326] [drm:hdmi_probe] *ERROR* hdmi_resources_init failed
> 
>> The HDMI driver probed correctly but looking at the log it seems that things
>> failed so can mislead users not familiar with the probe deferral mechanism.
> 
> So fix probe deferral.  Don't go through the entire kernel hacking in
> bodges everywhere, if we have to hack the error handling for almost all
> resource acquisition errors during probe that's obviously not sensible.
> 

Got it, thanks a lot for your explanations.

Best regards,
-- 
Javier Martinez Canillas
Open Source Group
Samsung Research America