linux-kernel - Re: [PATCH] drm/radeon: fix UVD suspend error

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Message-ID: <CADnq5_OoB90EGoujeLaK+iSQig=K0uzysM-OSLFhJAy0e4T9_w@mail.gmail.com>
Date:   Tue, 18 Jan 2022 15:16:48 -0500
From:   Alex Deucher <alexdeucher@...il.com>
To:     Leo Liu <leo.liu@....com>
Cc:     Qiang Ma <maqianga@...ontech.com>,
        "Deucher, Alexander" <alexander.deucher@....com>,
        Christian Koenig <christian.koenig@....com>,
        xinhui pan <Xinhui.Pan@....com>,
        Dave Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        amd-gfx list <amd-gfx@...ts.freedesktop.org>,
        Maling list - DRI developers 
        <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] drm/radeon: fix UVD suspend error

Applied.  Thanks!

On Mon, Jan 17, 2022 at 3:05 PM Leo Liu <leo.liu@....com> wrote:
>
>
> On 2022-01-17 2:47 a.m., Qiang Ma wrote:
> > I met a bug recently and the kernel log:
> >
> > [  330.171875] radeon 0000:03:00.0: couldn't schedule ib
> > [  330.175781] [drm:radeon_uvd_suspend [radeon]] *ERROR* Error destroying UVD (-22)!
> >
> > In radeon drivers, using UVD suspend is as follows:
> >
> > if (rdev->has_uvd) {
> >          uvd_v1_0_fini(rdev);
> >          radeon_uvd_suspend(rdev);
> > }
> >
> > In radeon_ib_schedule function, we check the 'ring->ready' state,
> > but in uvd_v1_0_fini funciton, we've cleared the ready state.
> > So, just modify the suspend code flow to fix error.
>
> It seems reasonable to me. The suspend sends the destroy message if
> there is still incomplete job, so it should be before the fini which
> stops the hardware.
>
> The series are:
>
> Reviewed-by: Leo Liu <leo.liu@....com>
>
>
> >
> > Signed-off-by: Qiang Ma <maqianga@...ontech.com>
> > ---
> >   drivers/gpu/drm/radeon/cik.c       | 2 +-
> >   drivers/gpu/drm/radeon/evergreen.c | 2 +-
> >   drivers/gpu/drm/radeon/ni.c        | 2 +-
> >   drivers/gpu/drm/radeon/r600.c      | 2 +-
> >   drivers/gpu/drm/radeon/rv770.c     | 2 +-
> >   drivers/gpu/drm/radeon/si.c        | 2 +-
> >   6 files changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/gpu/drm/radeon/cik.c b/drivers/gpu/drm/radeon/cik.c
> > index 81b4de7be9f2..5819737c21c6 100644
> > --- a/drivers/gpu/drm/radeon/cik.c
> > +++ b/drivers/gpu/drm/radeon/cik.c
> > @@ -8517,8 +8517,8 @@ int cik_suspend(struct radeon_device *rdev)
> >       cik_cp_enable(rdev, false);
> >       cik_sdma_enable(rdev, false);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       if (rdev->has_vce)
> >               radeon_vce_suspend(rdev);
> > diff --git a/drivers/gpu/drm/radeon/evergreen.c b/drivers/gpu/drm/radeon/evergreen.c
> > index eeb590d2dec2..455f8036aa54 100644
> > --- a/drivers/gpu/drm/radeon/evergreen.c
> > +++ b/drivers/gpu/drm/radeon/evergreen.c
> > @@ -5156,8 +5156,8 @@ int evergreen_suspend(struct radeon_device *rdev)
> >       radeon_pm_suspend(rdev);
> >       radeon_audio_fini(rdev);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       r700_cp_stop(rdev);
> >       r600_dma_stop(rdev);
> > diff --git a/drivers/gpu/drm/radeon/ni.c b/drivers/gpu/drm/radeon/ni.c
> > index 4a364ca7a1be..927e5f42e97d 100644
> > --- a/drivers/gpu/drm/radeon/ni.c
> > +++ b/drivers/gpu/drm/radeon/ni.c
> > @@ -2323,8 +2323,8 @@ int cayman_suspend(struct radeon_device *rdev)
> >       cayman_cp_enable(rdev, false);
> >       cayman_dma_stop(rdev);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       evergreen_irq_suspend(rdev);
> >       radeon_wb_disable(rdev);
> > diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
> > index ca3fcae2adb5..dd78fc499402 100644
> > --- a/drivers/gpu/drm/radeon/r600.c
> > +++ b/drivers/gpu/drm/radeon/r600.c
> > @@ -3232,8 +3232,8 @@ int r600_suspend(struct radeon_device *rdev)
> >       radeon_audio_fini(rdev);
> >       r600_cp_stop(rdev);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       r600_irq_suspend(rdev);
> >       radeon_wb_disable(rdev);
> > diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
> > index e592e57be1bb..38796af4fadd 100644
> > --- a/drivers/gpu/drm/radeon/rv770.c
> > +++ b/drivers/gpu/drm/radeon/rv770.c
> > @@ -1894,8 +1894,8 @@ int rv770_suspend(struct radeon_device *rdev)
> >       radeon_pm_suspend(rdev);
> >       radeon_audio_fini(rdev);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       r700_cp_stop(rdev);
> >       r600_dma_stop(rdev);
> > diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c
> > index 013e44ed0f39..8d5e4b25609d 100644
> > --- a/drivers/gpu/drm/radeon/si.c
> > +++ b/drivers/gpu/drm/radeon/si.c
> > @@ -6800,8 +6800,8 @@ int si_suspend(struct radeon_device *rdev)
> >       si_cp_enable(rdev, false);
> >       cayman_dma_stop(rdev);
> >       if (rdev->has_uvd) {
> > -             uvd_v1_0_fini(rdev);
> >               radeon_uvd_suspend(rdev);
> > +             uvd_v1_0_fini(rdev);
> >       }
> >       if (rdev->has_vce)
> >               radeon_vce_suspend(rdev);