linux-kernel - Re: [PATCH 3/4] power: Add Qualcomm SMBB driver

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Date:	Fri, 19 Jun 2015 19:01:28 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
Cc:	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-arm-msm@...r.kernel.org,
	Courtney Cavin <courtney.cavin@...ymobile.com>
Subject: Re: [PATCH 3/4] power: Add Qualcomm SMBB driver

On Thu, 2015-06-18 at 14:13 -0700, Bjorn Andersson wrote:
> --- /dev/null
> +++ b/drivers/power/qcom_smbb.c

> +MODULE_ALIAS("platform:qcom_smbb");

(The day before yesterday and yesterday I had a, well, lively
conversation regarding this macro. The interesting bits start at
https://lkml.org/lkml/2015/6/17/383 . 

But in a converstaion today things were rather silent. See
https://lkml.org/lkml/2015/6/19/68 and the reply, of sorts, in
https://lkml.org/lkml/2015/6/19/117. Let's see what happens here.)

As I understand it, this alias is only useful if there's a corresponding
struct platform_device, somewhere. Ie, this alias implies a
platform_device that will fire of a "MODALIAS=platform:qcom_smbb" uevent
when it's created. That would be a platform_device using a "qcom_smbb"
name.

If that's correct, then I think this MODULE_ALIAS macro isn't needed
here, as I couldn't find a platform_device using that name. (But perhaps
a patch that adds it is pending, somewhere.)

Thanks,

Paul Bolle

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