[PATCH 2/3] ARM: bcm2835: Add the Raspberry Pi firmware driver

[Jassi Brar]

On Wed, Apr 29, 2015 at 7:44 AM, Jassi Brar <jassisinghbrar at gmail.com> wrote:
> On Wed, Apr 29, 2015 at 7:28 AM, Stephen Warren <swarren at wwwdotorg.org> wrote:
>> On 04/27/2015 05:14 PM, Eric Anholt wrote:
>>
>>> +     firmware->chan = mbox_request_channel(&firmware->cl, 0);
>>> +     if (IS_ERR(firmware->chan)) {
>>> +             ret = PTR_ERR(firmware->chan);
>>> +             /* An -EBUSY from the core means it couldn't find our
>>> +              * channel, because the mailbox driver hadn't
>>> +              * registered yet.
>>> +              */
>>> +             if (ret == -EBUSY)
>>> +                     ret = -EPROBE_DEFER;
>>> +             else
>>> +                     dev_err(dev, "Failed to get mbox channel: %d\n", ret);
>>
>> I would have hoped that mbox_request_channel() returned -EPROBE_DEFER
>> itself. It really should...
>>
> Yes, it should. Let me look into it.
>
Turns out a patch doing that has already been submitted yesterday by
Andrew Bresticker.