[PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Lee Jones]

This set is part of a larger effort attempting to clean-up W=1
kernel builds, which are currently overwhelmingly riddled with
niggly little warnings.

There are 5000 warnings to work through.

It will take a couple more sets.

Lee Jones (19):
  gpu: host1x: bus: Add missing description for 'driver'
  gpu: ipu-v3: ipu-di: Strip out 2 unused 'di_sync_config' entries
  gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused
  gpu: drm: omapdrm: omap_irq: Fix a couple of doc-rot issues
  gpu: drm: selftests: test-drm_mm: Mark 'hole_end' as always_unused
  gpu: drm: scheduler: sched_main: Provide missing description for
    'sched' paramter
  gpu: drm: scheduler: sched_entity: Demote non-conformant kernel-doc
    headers
  gpu: drm: omapdrm: dss: dsi: Rework and remove a few unused variables
  gpu: drm: selftests: test-drm_framebuffer: Remove set but unused
    variable 'fb'
  gpu: drm: ttm: ttm_bo: Fix one function header - demote lots of
    kernel-doc abuses
  gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
  gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
    'analogix_dp_write_byte_to_dpcd'
  gpu: drm: ttm: ttm_tt: Demote kernel-doc header format abuses
  gpu: drm: selftests: test-drm_dp_mst_helper: Place 'struct
    drm_dp_sideband_msg_req_body' onto the heap
  gpu: drm: radeon: radeon_drv: Remove unused variable 'ret'
  gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
    kernel-doc header
  gpu: drm: radeon: radeon_device: Fix a bunch of kernel-doc
    misdemeanours
  gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused
  gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
    'analogix_dp_start_aux_transaction'

 drivers/gpu/drm/amd/amdgpu/amdgpu.h           |  6 +-
 .../gpu/drm/bridge/analogix/analogix_dp_reg.c | 88 -------------------
 drivers/gpu/drm/imx/ipuv3-plane.c             |  2 +-
 drivers/gpu/drm/omapdrm/dss/dsi.c             |  9 +-
 drivers/gpu/drm/omapdrm/omap_irq.c            |  6 +-
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c  |  2 +-
 drivers/gpu/drm/panel/panel-simple.c          |  2 +
 drivers/gpu/drm/radeon/radeon_device.c        | 23 ++---
 drivers/gpu/drm/radeon/radeon_drv.c           |  3 +-
 drivers/gpu/drm/scheduler/sched_entity.c      |  4 +-
 drivers/gpu/drm/scheduler/sched_main.c        |  1 +
 .../drm/selftests/test-drm_dp_mst_helper.c    | 29 +++---
 .../gpu/drm/selftests/test-drm_framebuffer.c  |  3 +-
 drivers/gpu/drm/selftests/test-drm_mm.c       |  2 +-
 drivers/gpu/drm/ttm/ttm_bo.c                  | 23 ++---
 drivers/gpu/drm/ttm/ttm_tt.c                  |  4 +-
 drivers/gpu/host1x/bus.c                      |  1 +
 drivers/gpu/ipu-v3/ipu-di.c                   |  4 -
 18 files changed, 59 insertions(+), 153 deletions(-)

Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: amd-gfx@lists.freedesktop.org
Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Christian Koenig <christian.koenig@amd.com>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: David Airlie <airlied@linux.ie>
Cc: David Francis <David.Francis@amd.com>
Cc: dri-devel@lists.freedesktop.org
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Gareth Hughes <gareth@valinux.com>
Cc: Huang Rui <ray.huang@amd.com>
Cc: Jason Yan <yanaijie@huawei.com>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Lee Jones <lee.jones@linaro.org>
Cc: linaro-mm-sig@lists.linaro.org
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: linux-media@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: Lyude Paul <lyude@redhat.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Nirmoy Das <nirmoy.aiemd@gmail.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Rob Clark <rob.clark@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
-- 
2.25.1

[PATCH 01/19] gpu: host1x: bus: Add missing description for 'driver'

[Lee Jones]

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/host1x/bus.c:40: warning: Function parameter or member 'driver' not described in 'host1x_subdev_add'

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
 drivers/gpu/host1x/bus.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
index e201f62d62c0c..347fb962b6c93 100644
--- a/drivers/gpu/host1x/bus.c
+++ b/drivers/gpu/host1x/bus.c
@@ -32,6 +32,7 @@ struct host1x_subdev {
 /**
  * host1x_subdev_add() - add a new subdevice with an associated device node
  * @device: host1x device to add the subdevice to
+ * @driver: host1x driver containing the subdevices
  * @np: device node
  */
 static int host1x_subdev_add(struct host1x_device *device,
-- 
2.25.1

Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Sam Ravnborg]

Hi Lee.

On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> This set is part of a larger effort attempting to clean-up W=1
> kernel builds, which are currently overwhelmingly riddled with
> niggly little warnings.

Thanks for looking into this.

> There are 5000 warnings to work through.
> 
> It will take a couple more sets.
:-)

>   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
I have a patch here that inline the comments - and fix the warning as a
side effect. I will get it posted tonight as this is better.

>   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
>     'analogix_dp_write_byte_to_dpcd'
When I looked at his I had another unused function after removing the
first.

>   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
>     kernel-doc header
Agree on this simple approch, will apply.

>   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
>     'analogix_dp_start_aux_transaction'
OK, this was the one I referred to above. They should be squashed into
one patch.

	Sam

Re: [PATCH 01/19] gpu: host1x: bus: Add missing description for 'driver'

[Thierry Reding]

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On Thu, Nov 05, 2020 at 02:44:59PM +0000, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/gpu/host1x/bus.c:40: warning: Function parameter or member 'driver' not described in 'host1x_subdev_add'
> 
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-tegra@vger.kernel.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
> ---
>  drivers/gpu/host1x/bus.c | 1 +
>  1 file changed, 1 insertion(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Thierry Reding]

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On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> This set is part of a larger effort attempting to clean-up W=1
> kernel builds, which are currently overwhelmingly riddled with
> niggly little warnings.
> 
> There are 5000 warnings to work through.
> 
> It will take a couple more sets.
> 
> Lee Jones (19):
>   gpu: host1x: bus: Add missing description for 'driver'
>   gpu: ipu-v3: ipu-di: Strip out 2 unused 'di_sync_config' entries
>   gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused
>   gpu: drm: omapdrm: omap_irq: Fix a couple of doc-rot issues
>   gpu: drm: selftests: test-drm_mm: Mark 'hole_end' as always_unused
>   gpu: drm: scheduler: sched_main: Provide missing description for
>     'sched' paramter
>   gpu: drm: scheduler: sched_entity: Demote non-conformant kernel-doc
>     headers
>   gpu: drm: omapdrm: dss: dsi: Rework and remove a few unused variables
>   gpu: drm: selftests: test-drm_framebuffer: Remove set but unused
>     variable 'fb'
>   gpu: drm: ttm: ttm_bo: Fix one function header - demote lots of
>     kernel-doc abuses
>   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
>   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
>     'analogix_dp_write_byte_to_dpcd'
>   gpu: drm: ttm: ttm_tt: Demote kernel-doc header format abuses
>   gpu: drm: selftests: test-drm_dp_mst_helper: Place 'struct
>     drm_dp_sideband_msg_req_body' onto the heap
>   gpu: drm: radeon: radeon_drv: Remove unused variable 'ret'
>   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
>     kernel-doc header
>   gpu: drm: radeon: radeon_device: Fix a bunch of kernel-doc
>     misdemeanours
>   gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused
>   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
>     'analogix_dp_start_aux_transaction'

As commented on the other patches, the subject prefixes on most of these
look wrong, but it's generally a nice cleanup.

Thanks!
Thierry

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Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 05 Nov 2020, Thierry Reding wrote:

> On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> > 
> > There are 5000 warnings to work through.
> > 
> > It will take a couple more sets.
> > 
> > Lee Jones (19):
> >   gpu: host1x: bus: Add missing description for 'driver'
> >   gpu: ipu-v3: ipu-di: Strip out 2 unused 'di_sync_config' entries
> >   gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused
> >   gpu: drm: omapdrm: omap_irq: Fix a couple of doc-rot issues
> >   gpu: drm: selftests: test-drm_mm: Mark 'hole_end' as always_unused
> >   gpu: drm: scheduler: sched_main: Provide missing description for
> >     'sched' paramter
> >   gpu: drm: scheduler: sched_entity: Demote non-conformant kernel-doc
> >     headers
> >   gpu: drm: omapdrm: dss: dsi: Rework and remove a few unused variables
> >   gpu: drm: selftests: test-drm_framebuffer: Remove set but unused
> >     variable 'fb'
> >   gpu: drm: ttm: ttm_bo: Fix one function header - demote lots of
> >     kernel-doc abuses
> >   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
> >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> >     'analogix_dp_write_byte_to_dpcd'
> >   gpu: drm: ttm: ttm_tt: Demote kernel-doc header format abuses
> >   gpu: drm: selftests: test-drm_dp_mst_helper: Place 'struct
> >     drm_dp_sideband_msg_req_body' onto the heap
> >   gpu: drm: radeon: radeon_drv: Remove unused variable 'ret'
> >   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
> >     kernel-doc header
> >   gpu: drm: radeon: radeon_device: Fix a bunch of kernel-doc
> >     misdemeanours
> >   gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused
> >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> >     'analogix_dp_start_aux_transaction'
> 
> As commented on the other patches, the subject prefixes on most of these
> look wrong, but it's generally a nice cleanup.

The prefixes are automated.  I'll add this to my list of awkward
subsystems and go through them all manually again tomorrow. :D

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 05 Nov 2020, Sam Ravnborg wrote:

> Hi Lee.
> 
> On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> 
> Thanks for looking into this.
> 
> > There are 5000 warnings to work through.
> > 
> > It will take a couple more sets.
> :-)
> 
> >   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
> I have a patch here that inline the comments - and fix the warning as a
> side effect. I will get it posted tonight as this is better.
> 
> >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> >     'analogix_dp_write_byte_to_dpcd'
> When I looked at his I had another unused function after removing the
> first.
> 
> >   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
> >     kernel-doc header
> Agree on this simple approch, will apply.
> 
> >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> >     'analogix_dp_start_aux_transaction'
> OK, this was the one I referred to above. They should be squashed into
> one patch.

I can squash them if you prefer.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Daniel Vetter]

On Thu, Nov 5, 2020 at 7:10 PM Lee Jones <lee.jones@linaro.org> wrote:
>
> On Thu, 05 Nov 2020, Thierry Reding wrote:
>
> > On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> > > This set is part of a larger effort attempting to clean-up W=1
> > > kernel builds, which are currently overwhelmingly riddled with
> > > niggly little warnings.
> > >
> > > There are 5000 warnings to work through.
> > >
> > > It will take a couple more sets.
> > >
> > > Lee Jones (19):
> > >   gpu: host1x: bus: Add missing description for 'driver'
> > >   gpu: ipu-v3: ipu-di: Strip out 2 unused 'di_sync_config' entries
> > >   gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused
> > >   gpu: drm: omapdrm: omap_irq: Fix a couple of doc-rot issues
> > >   gpu: drm: selftests: test-drm_mm: Mark 'hole_end' as always_unused
> > >   gpu: drm: scheduler: sched_main: Provide missing description for
> > >     'sched' paramter
> > >   gpu: drm: scheduler: sched_entity: Demote non-conformant kernel-doc
> > >     headers
> > >   gpu: drm: omapdrm: dss: dsi: Rework and remove a few unused variables
> > >   gpu: drm: selftests: test-drm_framebuffer: Remove set but unused
> > >     variable 'fb'
> > >   gpu: drm: ttm: ttm_bo: Fix one function header - demote lots of
> > >     kernel-doc abuses
> > >   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
> > >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> > >     'analogix_dp_write_byte_to_dpcd'
> > >   gpu: drm: ttm: ttm_tt: Demote kernel-doc header format abuses
> > >   gpu: drm: selftests: test-drm_dp_mst_helper: Place 'struct
> > >     drm_dp_sideband_msg_req_body' onto the heap
> > >   gpu: drm: radeon: radeon_drv: Remove unused variable 'ret'
> > >   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
> > >     kernel-doc header
> > >   gpu: drm: radeon: radeon_device: Fix a bunch of kernel-doc
> > >     misdemeanours
> > >   gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused
> > >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> > >     'analogix_dp_start_aux_transaction'
> >
> > As commented on the other patches, the subject prefixes on most of these
> > look wrong, but it's generally a nice cleanup.
>
> The prefixes are automated.  I'll add this to my list of awkward
> subsystems and go through them all manually again tomorrow. :D

tbh for autmoation they look really good :-)

I'd say if you replace the intermediate ": " with just a / you'll be
perfectly in style for drivers/gpu. But really I think it's ok as-is,
imo no need to change since this is a giantic tree wide effort.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch

Re: [PATCH 00/19] [Set 1] Rid W=1 warnings from GPU

[Lee Jones]

On Thu, 05 Nov 2020, Daniel Vetter wrote:

> On Thu, Nov 5, 2020 at 7:10 PM Lee Jones <lee.jones@linaro.org> wrote:
> >
> > On Thu, 05 Nov 2020, Thierry Reding wrote:
> >
> > > On Thu, Nov 05, 2020 at 02:44:58PM +0000, Lee Jones wrote:
> > > > This set is part of a larger effort attempting to clean-up W=1
> > > > kernel builds, which are currently overwhelmingly riddled with
> > > > niggly little warnings.
> > > >
> > > > There are 5000 warnings to work through.
> > > >
> > > > It will take a couple more sets.
> > > >
> > > > Lee Jones (19):
> > > >   gpu: host1x: bus: Add missing description for 'driver'
> > > >   gpu: ipu-v3: ipu-di: Strip out 2 unused 'di_sync_config' entries
> > > >   gpu: drm: imx: ipuv3-plane: Mark 'crtc_state' as __always_unused
> > > >   gpu: drm: omapdrm: omap_irq: Fix a couple of doc-rot issues
> > > >   gpu: drm: selftests: test-drm_mm: Mark 'hole_end' as always_unused
> > > >   gpu: drm: scheduler: sched_main: Provide missing description for
> > > >     'sched' paramter
> > > >   gpu: drm: scheduler: sched_entity: Demote non-conformant kernel-doc
> > > >     headers
> > > >   gpu: drm: omapdrm: dss: dsi: Rework and remove a few unused variables
> > > >   gpu: drm: selftests: test-drm_framebuffer: Remove set but unused
> > > >     variable 'fb'
> > > >   gpu: drm: ttm: ttm_bo: Fix one function header - demote lots of
> > > >     kernel-doc abuses
> > > >   gpu: drm: panel: panel-simple: Fix 'struct panel_desc's header
> > > >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> > > >     'analogix_dp_write_byte_to_dpcd'
> > > >   gpu: drm: ttm: ttm_tt: Demote kernel-doc header format abuses
> > > >   gpu: drm: selftests: test-drm_dp_mst_helper: Place 'struct
> > > >     drm_dp_sideband_msg_req_body' onto the heap
> > > >   gpu: drm: radeon: radeon_drv: Remove unused variable 'ret'
> > > >   gpu: drm: panel: panel-ilitek-ili9322: Demote non-conformant
> > > >     kernel-doc header
> > > >   gpu: drm: radeon: radeon_device: Fix a bunch of kernel-doc
> > > >     misdemeanours
> > > >   gpu: drm: amd: amdgpu: amdgpu: Mark global variables as __maybe_unused
> > > >   gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function
> > > >     'analogix_dp_start_aux_transaction'
> > >
> > > As commented on the other patches, the subject prefixes on most of these
> > > look wrong, but it's generally a nice cleanup.
> >
> > The prefixes are automated.  I'll add this to my list of awkward
> > subsystems and go through them all manually again tomorrow. :D
> 
> tbh for autmoation they look really good :-)

Only the prefixes are automated unfortunately. :)

> I'd say if you replace the intermediate ": " with just a / you'll be
> perfectly in style for drivers/gpu. But really I think it's ok as-is,

It's up to you.  Make the call and I'll abide.

> imo no need to change since this is a giantic tree wide effort.

Yes, you're not kidding, and thanks for noticing.

Only 10,000 (from 18,000) more to go though. :D

GPU is a biggy (5,000), although one patch in [Set 2] fixes 2,000 in
one hit, which is great!  I'll probably submit that tomorrow.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH 01/19] gpu: host1x: bus: Add missing description for 'driver'

[Sam Ravnborg]

Hi Lee.
On Thu, Nov 05, 2020 at 02:44:59PM +0000, Lee Jones wrote:
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/gpu/host1x/bus.c:40: warning: Function parameter or member 'driver' not described in 'host1x_subdev_add'
> 
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: dri-devel@lists.freedesktop.org
> Cc: linux-tegra@vger.kernel.org
> Signed-off-by: Lee Jones <lee.jones@linaro.org>

Applied to drm-misc-next - should appear in -next within a week.

	Sam
> ---
>  drivers/gpu/host1x/bus.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/host1x/bus.c b/drivers/gpu/host1x/bus.c
> index e201f62d62c0c..347fb962b6c93 100644
> --- a/drivers/gpu/host1x/bus.c
> +++ b/drivers/gpu/host1x/bus.c
> @@ -32,6 +32,7 @@ struct host1x_subdev {
>  /**
>   * host1x_subdev_add() - add a new subdevice with an associated device node
>   * @device: host1x device to add the subdevice to
> + * @driver: host1x driver containing the subdevices
>   * @np: device node
>   */
>  static int host1x_subdev_add(struct host1x_device *device,
> -- 
> 2.25.1
> 
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel