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From:   Daniel Vetter <daniel@ffwll.ch>
Date:   Wed, 9 Dec 2020 13:08:15 +0100
Message-ID: <CAKMK7uH25qMZy0fLVTAu+Um5r0A-iCQtGc5yFFwNHXd3KZ3VBQ@mail.gmail.com>
Subject: Re: [PATCH] drm/tidss: Use the new api devm_drm_irq_install
To:     Tomi Valkeinen <tomi.valkeinen@ti.com>
Cc:     Tian Tao <tiantao6@hisilicon.com>, Jyri Sarha <jsarha@ti.com>,
        Dave Airlie <airlied@linux.ie>,
        dri-devel <dri-devel@lists.freedesktop.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
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On Wed, Dec 9, 2020 at 1:06 PM Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
>
> On 09/12/2020 13:56, Daniel Vetter wrote:
> > On Wed, Dec 9, 2020 at 12:29 PM Tomi Valkeinen <tomi.valkeinen@ti.com> wrote:
> >>
> >> On 09/12/2020 02:48, Daniel Vetter wrote:
> >>> On Tue, Dec 08, 2020 at 03:50:59PM +0800, Tian Tao wrote:
> >>>> Use devm_drm_irq_install to register interrupts so that
> >>>> drm_irq_uninstall is not needed to be called.
> >>>>
> >>>> Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
> >>>
> >>> There's another drm_irq_install in the error path. But I'm not sure this
> >>> is safe since you're chaning the order in which things get cleaned up now.
> >>> So leaving this up to Tomi.
> >>
> >> Right, I don't think this works. tidss irq_uninstall uses runtime_get/put, which needs to happen
> >> before pm_runtime_disable. With devm_drm_irq_install that's not the case.
> >
> > Hm I don't spot devm_ versions of these, surely we're not the only
> > ones with this problem?
>
> drm-misc-next has these. hisilicon uses it, but doesn't have an irq_uninstall hook, so possibly late
> uninstall is fine there.

I meant a devm_ version of pm_runtime_enable. Or some other way to
make this just work.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch