linux-kernel - Re: [Sound-open-firmware] [PATCH v2 1/5] ASoC: SOF: imx: Add i.MX8 HW support

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Message-ID: <1563957164.2311.28.camel@pengutronix.de>
Date:   Wed, 24 Jul 2019 10:32:44 +0200
From:   Lucas Stach <l.stach@...gutronix.de>
To:     Daniel Baluta <daniel.baluta@...il.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Cc:     Mark Rutland <mark.rutland@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        Peng Fan <peng.fan@....com>,
        Fabio Estevam <festevam@...il.com>,
        Anson Huang <anson.huang@....com>,
        Devicetree List <devicetree@...r.kernel.org>,
        Daniel Baluta <daniel.baluta@....com>,
        "S.j. Wang" <shengjiu.wang@....com>,
        Marco Felsch <m.felsch@...gutronix.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Paul Olaru <paul.olaru@....com>,
        Rob Herring <robh+dt@...nel.org>,
        dl-linux-imx <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Leonard Crestez <leonard.crestez@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        sound-open-firmware@...a-project.org
Subject: Re: [Sound-open-firmware] [PATCH v2 1/5] ASoC: SOF: imx: Add i.MX8
 HW support

Hi Daniel,

Am Mittwoch, den 24.07.2019, 09:54 +0300 schrieb Daniel Baluta:
> On Tue, Jul 23, 2019 at 6:18 PM Pierre-Louis Bossart
[...]
> 
> > Also are all the resources device-managed, I don't see a remove()?
> 
> Good catch for pm stuff. We mostly didn't care about remove because
> drivers are always Y in our distribution.

Linux drivers need to be hotplug aware, even if they are not built as a
module. You can test things by manually unbinding the driver from the
device via sysfs.

Regards,
Lucas