linux-kernel - Re: permission to move definition of struct rpmsg_channel

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Date:	Tue, 10 Sep 2013 19:00:51 +0200
From:	Thierry Reding <thierry.reding@...il.com>
To:	Ohad Ben-Cohen <ohad@...ery.com>
Cc:	Arjun Gopalan <agopalan@...dia.com>,
	Brian Swetland <swetland@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	Paul Walmsley <pwalmsley@...dia.com>
Subject: Re: permission to move definition of struct rpmsg_channel_info

On Mon, Sep 09, 2013 at 10:06:24PM +0200, Ohad Ben-Cohen wrote:
> On Mon, Sep 9, 2013 at 2:57 PM, Thierry Reding <thierry.reding@...il.com> wrote:
[...]
> > Looking at the remoteproc core, it seems that there's no direct way to
> > change the firmware running on a remoteproc at runtime.
> 
> One way is to unload and load the driver, but you can also use the
> bind/unbind sysfs files of your driver (echo -n device-name >
> /sys/..../{un}bind).

I'm not quite sure how that solves the issue with replacing the firmware
image. The driver will still request the same firmware on rebind, so the
only way to have a different firmware loaded would be to replace the
file. That sounds sub-optimal. But it's not very important at this stage
so it can be deferred until (and if) it becomes a real issue.

> Does that help?

Yes, thanks very much for confirming.

Thierry

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