linux-kernel - Re: Grafting old platform drivers onto a new DT kernel

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 09 Nov 2015 16:12:16 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	Mason <slash.tmp@...e.fr>
Cc:	Javier Martinez Canillas <javier@...hile0.org>,
	Andrew Lunn <andrew@...n.ch>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux ARM <linux-arm-kernel@...ts.infradead.org>,
	Marc Zyngier <marc.zyngier@....com>,
	Jason Cooper <jason@...edaemon.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ulf Hansson <ulf.hansson@...aro.org>
Subject: Re: Grafting old platform drivers onto a new DT kernel

Mason <slash.tmp@...e.fr> writes:

> On 09/11/2015 16:40, Måns Rullgård wrote:
>
>> The simplest solution for you is probably to add a quick and dirty DT
>> binding to the old driver.  If it doesn't use any driver-specific
>> platform data struct, you only need to set .of_match_table in the
>> struct platform_driver.  If there is a platform data struct, you'll also
>> need to write some code to populate it from DT properties.  It shouldn't
>> take more than a few minutes per driver in most cases.
>
> I'll try that approach, although I fear that "a few minutes per driver"
> is an optimistic assessment.

If the driver only needs an MMIO region and an IRQ, it is literally five
lines of code.

-- 
Måns Rullgård
mans@...sr.com
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/