linux-kernel - Re: [PATCH] BUG-REPORT: snd-hda: hacked-together EPROBE

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Date:   Tue, 4 Jul 2017 17:14:39 +0200
From:   Daniel Vetter <daniel@...ll.ch>
To:     Takashi Iwai <tiwai@...e.de>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Intel Graphics Development <intel-gfx@...ts.freedesktop.org>,
        Guneshwor Singh <guneshwor.o.singh@...el.com>,
        Hardik T Shah <hardik.t.shah@...el.com>,
        Libin Yang <libin.yang@...el.com>,
        "Subhransu S. Prusty" <subhransu.s.prusty@...el.com>,
        Vinod Koul <vinod.koul@...el.com>,
        Julia Lawall <Julia.Lawall@...6.fr>,
        Jaroslav Kysela <perex@...ex.cz>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] BUG-REPORT: snd-hda: hacked-together EPROBE_DEFER support

On Thu, Jun 29, 2017 at 12:25 PM, Daniel Vetter <daniel@...ll.ch> wrote:
>> Now I took a closer look, and this appears rather like a brown paper
>> bag bug, not about the deferred probe or module dependency.
>> The fix patch is below.  Could you check whether it works?
>
> Yay, this works!
>
> Tested-by: Daniel Vetter <daniel.vetter@...ll.ch>

Next one: i915 module reloading is broken because something is holding
onto a module reference and doesn't drop it. Didn't check which sets
of patches introduced this, but iirc this worked last week. Disabling
hda-intel gets in Kconfig gets rid of the problem, so I assume
something in the sound driver is leaking that reference ...

It's also causing lots and lots of red in our CI :( If we can't fix
this we need to disable snd-hda-intel there too.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch