linux-kernel - Re: [PATCH] driver core: Disable driver deferred probe timeout by default

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Date:   Mon, 14 Nov 2022 10:20:23 -0600
From:   Steev Klimaszewski <steev@...i.org>
To:     Javier Martinez Canillas <javierm@...hat.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org,
        Saravana Kannan <saravanak@...gle.com>,
        Peter Robinson <pbrobinson@...hat.com>,
        Rob Herring <robh@...nel.org>,
        Sergio Lopez Pascual <slp@...hat.com>,
        Enric Balletbo i Serra <eballetbo@...hat.com>,
        John Stultz <jstultz@...gle.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>
Subject: Re: [PATCH] driver core: Disable driver deferred probe timeout by
 default

Hi All,

On 11/14/22 5:56 AM, Javier Martinez Canillas wrote:
> On 11/14/22 12:38, Greg Kroah-Hartman wrote:
>> On Mon, Nov 14, 2022 at 12:13:15PM +0100, Javier Martinez Canillas wrote:
>>> Hello Greg,
> [...]
>
>>> I even gave an example about general purpose distributions that build as
>>> much as possible as a module. What more info do you think that is missing?
>> Exact systems that this is failing on would be great to have.
>>
> The exact system is a Snapdragon SC7180 based HP X2 Chromebook with latest
> Fedora Rawhide image (kernel version 6.1-rc4). The reason why is timing out
> is that the arm_smmu driver is built-in (CONFIG_ARM_SMMU=y) but it depends
> on gpucc-sc7180 clk driver that's built as module (CONFIG_SC_GPUCC_7180=m).

Additionally, this fails on the Snapdragon SC8280XP based Thinkpad X13s 
with 6.1-rc4 (and rc5), however, unlike Javier's setup, I *do* have 
CONFIG_SC_GPUCC_SC8280XP=y, so it's already built in to the kernel.  
Additionally, all DRM options =y, except for CONFIG_DRM_GEM_HELP=m and 
CONFIG_DRM_DISPLAY_CONNECTOR=m.

I am hoping to find some time tonight after work to also test on my 
SDM850 based Lenovo Yoga C630, as I believe my previous testing of 6.1 
may have been hitting this but I did not have time to dig into what was 
going on there.

-- steev