linux-kernel - Re: [RFC v0 7/8] Input: ims-pcu: use firmware

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Message-ID: <20160803161821.GB32965@dtor-ws>
Date:	Wed, 3 Aug 2016 09:18:21 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	"Luis R. Rodriguez" <mcgrof@...nel.org>
Cc:	Daniel Wagner <daniel.wagner@...-carit.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jeff Mahoney <jeffm@...e.com>,
	Arend van Spriel <arend.vanspriel@...adcom.com>,
	Bjorn Andersson <bjorn.andersson@...aro.org>,
	Daniel Wagner <wagi@...om.org>,
	Bastien Nocera <hadess@...ess.net>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Johannes Berg <johannes.berg@...el.com>,
	Kalle Valo <kvalo@...eaurora.org>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Mimi Zohar <zohar@...ux.vnet.ibm.com>,
	David Howells <dhowells@...hat.com>,
	Andy Lutomirski <luto@...capital.net>,
	David Woodhouse <dwmw2@...radead.org>,
	Julia Lawall <julia.lawall@...6.fr>,
	linux-input@...r.kernel.org, linux-kselftest@...r.kernel.org,
	linux-wireless@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC v0 7/8] Input: ims-pcu: use firmware_stat instead of
 completion

On Wed, Aug 03, 2016 at 05:55:40PM +0200, Luis R. Rodriguez wrote:
> 
> I accept all help and would be glad to make enhancements instead of
> the old API through new API. The biggest thing here first I think is
> adding devm support, that I think should address what seemed to be
> the need to add more code for a transformation into the API. I'd

I am confused. Why do we need devm support, given that devm is only
valid in probe() paths[*] and we do know that we do not want to load
firmware in probe() paths because it may cause blocking?

[*] Yes, I know there are calls to devm* outside of probe() but I am
pretty sure they are buggy unless they explicitly freed with devm* as
well and then there is no point. IN all other cases it is likely wrong
as it messes up with order of freeing resources.

Thanks.

-- 
Dmitry