[PATCH RESEND 00/83] drm: Switch drivers to drm_mode_config_create_initial_state

[PATCH RESEND 00/83] drm: Switch drivers to drm_mode_config_create_initial_state

[Maxime Ripard]

drm_mode_config_reset() has a dual role: it creates the initial KMS
state at probe time, and resets hardware and software state during
suspend/resume cycles. However, the two roles need different
behaviors, notably for objects like drm_private_obj that must persist
across suspend/resume and are excluded from drm_mode_config_reset()
by design.

Previous series introduced drm_mode_config_create_initial_state() to
handle only the initial state creation at probe time, including
drm_private_obj. Unlike drm_mode_config_reset(), it returns an error
code, allowing drivers to properly handle allocation failures.

This series switches all drivers calling drm_mode_config_reset() at
probe time to drm_mode_config_create_initial_state(). The conversion
was done using a Coccinelle semantic patch.

This is part, and the final piece, of a larger transition to remove the
overloaded reset semantics from the KMS subsystem, following similar
series for planes, CRTCs, connectors, and bridges.

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Maxime Ripard (83):
      drm/adp: Switch to drm_mode_config_create_initial_state
      drm/amdgpu: Switch to drm_mode_config_create_initial_state
      drm/appletbdrm: Switch to drm_mode_config_create_initial_state
      drm/komeda: Switch to drm_mode_config_create_initial_state
      drm/hdlcd: Switch to drm_mode_config_create_initial_state
      drm/malidp: Switch to drm_mode_config_create_initial_state
      drm/armada: Switch to drm_mode_config_create_initial_state
      drm/aspeed: Switch to drm_mode_config_create_initial_state
      drm/ast: Switch to drm_mode_config_create_initial_state
      drm/atmel-hlcdc: Switch to drm_mode_config_create_initial_state
      drm/exynos: Switch to drm_mode_config_create_initial_state
      drm/fsl-dcu: Switch to drm_mode_config_create_initial_state
      drm/gud: Switch to drm_mode_config_create_initial_state
      drm/hisilicon/hibmc: Switch to drm_mode_config_create_initial_state
      drm/hisilicon/kirin: Switch to drm_mode_config_create_initial_state
      drm/hyperv: Switch to drm_mode_config_create_initial_state
      drm/imx/dc: Switch to drm_mode_config_create_initial_state
      drm/imx/dcss: Switch to drm_mode_config_create_initial_state
      drm/imx/ipuv3: Switch to drm_mode_config_create_initial_state
      drm/ingenic: Switch to drm_mode_config_create_initial_state
      drm/kmb: Switch to drm_mode_config_create_initial_state
      drm/logicvc: Switch to drm_mode_config_create_initial_state
      drm/loongson: Switch to drm_mode_config_create_initial_state
      drm/mcde: Switch to drm_mode_config_create_initial_state
      drm/mediatek: Switch to drm_mode_config_create_initial_state
      drm/meson: Switch to drm_mode_config_create_initial_state
      drm/mgag200: Switch to drm_mode_config_create_initial_state
      drm/msm: Switch to drm_mode_config_create_initial_state
      drm/lcdif: Switch to drm_mode_config_create_initial_state
      drm/mxsfb: Switch to drm_mode_config_create_initial_state
      drm/nouveau: Switch to drm_mode_config_create_initial_state
      drm/omap: Switch to drm_mode_config_create_initial_state
      drm/pl111: Switch to drm_mode_config_create_initial_state
      drm/qxl: Switch to drm_mode_config_create_initial_state
      drm/rcar-du: Switch to drm_mode_config_create_initial_state
      drm/rz-du: Switch to drm_mode_config_create_initial_state
      drm/shmobile: Switch to drm_mode_config_create_initial_state
      drm/rockchip: Switch to drm_mode_config_create_initial_state
      drm/st7571: Switch to drm_mode_config_create_initial_state
      drm/st7586: Switch to drm_mode_config_create_initial_state
      drm/st7735r: Switch to drm_mode_config_create_initial_state
      drm/st7920: Switch to drm_mode_config_create_initial_state
      drm/ssd130x: Switch to drm_mode_config_create_initial_state
      drm/sprd: Switch to drm_mode_config_create_initial_state
      drm/sti: Switch to drm_mode_config_create_initial_state
      drm/stm: Switch to drm_mode_config_create_initial_state
      drm/sun4i: Switch to drm_mode_config_create_initial_state
      drm/corebootdrm: Switch to drm_mode_config_create_initial_state
      drm/efidrm: Switch to drm_mode_config_create_initial_state
      drm/ofdrm: Switch to drm_mode_config_create_initial_state
      drm/simpledrm: Switch to drm_mode_config_create_initial_state
      drm/vesadrm: Switch to drm_mode_config_create_initial_state
      drm/tegra: Switch to drm_mode_config_create_initial_state
      drm/tests: drm_atomic_state_test: Switch to drm_mode_config_create_initial_state
      drm/tests: drm_atomic_test: Switch to drm_mode_config_create_initial_state
      drm/tests: drm_bridge_test: Switch to drm_mode_config_create_initial_state
      drm/tests: drm_hdmi_state_helper_test: Switch to drm_mode_config_create_initial_state
      drm/tidss: Switch to drm_mode_config_create_initial_state
      drm/tilcdc: Switch to drm_mode_config_create_initial_state
      drm/arcpgu: Switch to drm_mode_config_create_initial_state
      drm/bochs: Switch to drm_mode_config_create_initial_state
      drm/cirrus-qemu: Switch to drm_mode_config_create_initial_state
      drm/gm12u320: Switch to drm_mode_config_create_initial_state
      drm/hx8357d: Switch to drm_mode_config_create_initial_state
      drm/ili9163: Switch to drm_mode_config_create_initial_state
      drm/ili9225: Switch to drm_mode_config_create_initial_state
      drm/ili9341: Switch to drm_mode_config_create_initial_state
      drm/ili9486: Switch to drm_mode_config_create_initial_state
      drm/mi0283qt: Switch to drm_mode_config_create_initial_state
      drm/panel-mipi-dbi: Switch to drm_mode_config_create_initial_state
      drm/pixpaper: Switch to drm_mode_config_create_initial_state
      drm/repaper: Switch to drm_mode_config_create_initial_state
      drm/sharp-memory: Switch to drm_mode_config_create_initial_state
      drm/tve200: Switch to drm_mode_config_create_initial_state
      drm/udl: Switch to drm_mode_config_create_initial_state
      drm/vboxvideo: Switch to drm_mode_config_create_initial_state
      drm/vc4: Switch to drm_mode_config_create_initial_state
      drm/verisilicon: Switch to drm_mode_config_create_initial_state
      drm/virtio: Switch to drm_mode_config_create_initial_state
      drm/vkms: Switch to drm_mode_config_create_initial_state
      drm/vmwgfx: Switch to drm_mode_config_create_initial_state
      drm/xen: Switch to drm_mode_config_create_initial_state
      drm/xlnx: Switch to drm_mode_config_create_initial_state

 drivers/gpu/drm/adp/adp_drv.c                                |  4 +---
 drivers/gpu/drm/amd/amdgpu/amdgpu_vkms.c                     |  4 +++-
 .../amd/display/amdgpu_dm/tests/amdgpu_dm_connector_test.c   |  3 ++-
 .../amd/display/amdgpu_dm/tests/amdgpu_dm_mst_types_test.c   |  4 +++-
 drivers/gpu/drm/arm/display/komeda/komeda_kms.c              |  4 +++-
 drivers/gpu/drm/arm/hdlcd_drv.c                              |  4 +++-
 drivers/gpu/drm/arm/malidp_drv.c                             |  4 +++-
 drivers/gpu/drm/armada/armada_drv.c                          |  4 +++-
 drivers/gpu/drm/aspeed/aspeed_gfx_drv.c                      |  4 +---
 drivers/gpu/drm/ast/ast_mode.c                               |  4 +++-
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_dc.c                 |  4 +++-
 drivers/gpu/drm/exynos/exynos_drm_drv.c                      |  4 +++-
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_kms.c                    |  4 +++-
 drivers/gpu/drm/gud/gud_drv.c                                |  4 +++-
 drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_drv.c              |  6 ++++--
 drivers/gpu/drm/hisilicon/kirin/kirin_drm_drv.c              |  6 ++++--
 drivers/gpu/drm/hyperv/hyperv_drm_modeset.c                  |  4 +---
 drivers/gpu/drm/imx/dc/dc-kms.c                              |  4 +++-
 drivers/gpu/drm/imx/dcss/dcss-kms.c                          |  4 +++-
 drivers/gpu/drm/imx/ipuv3/imx-drm-core.c                     |  4 +++-
 drivers/gpu/drm/ingenic/ingenic-drm-drv.c                    |  4 +++-
 drivers/gpu/drm/kmb/kmb_drv.c                                |  3 +--
 drivers/gpu/drm/logicvc/logicvc_mode.c                       |  4 +++-
 drivers/gpu/drm/loongson/lsdc_drv.c                          |  4 +++-
 drivers/gpu/drm/mcde/mcde_drv.c                              |  4 +++-
 drivers/gpu/drm/mediatek/mtk_drm_drv.c                       |  8 +++++++-
 drivers/gpu/drm/meson/meson_drv.c                            |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200.c                       |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200eh.c                     |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200eh3.c                    |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200eh5.c                    |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200er.c                     |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200ev.c                     |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200ew3.c                    |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200se.c                     |  4 +++-
 drivers/gpu/drm/mgag200/mgag200_g200wb.c                     |  4 +++-
 drivers/gpu/drm/msm/msm_kms.c                                |  4 +++-
 drivers/gpu/drm/mxsfb/lcdif_drv.c                            |  4 +++-
 drivers/gpu/drm/mxsfb/mxsfb_drv.c                            |  4 +++-
 drivers/gpu/drm/nouveau/nouveau_display.c                    |  4 +++-
 drivers/gpu/drm/omapdrm/omap_drv.c                           |  4 +++-
 drivers/gpu/drm/pl111/pl111_drv.c                            |  4 +++-
 drivers/gpu/drm/qxl/qxl_display.c                            |  3 +--
 drivers/gpu/drm/renesas/rcar-du/rcar_du_kms.c                |  4 +++-
 drivers/gpu/drm/renesas/rz-du/rzg2l_du_kms.c                 |  4 +++-
 drivers/gpu/drm/renesas/shmobile/shmob_drm_kms.c             |  4 +++-
 drivers/gpu/drm/rockchip/rockchip_drm_drv.c                  |  4 +++-
 drivers/gpu/drm/sitronix/st7571.c                            |  4 +++-
 drivers/gpu/drm/sitronix/st7586.c                            |  4 +++-
 drivers/gpu/drm/sitronix/st7735r.c                           |  4 +++-
 drivers/gpu/drm/sitronix/st7920.c                            |  4 +---
 drivers/gpu/drm/solomon/ssd130x.c                            |  4 +---
 drivers/gpu/drm/sprd/sprd_drm.c                              |  6 ++++--
 drivers/gpu/drm/sti/sti_drv.c                                |  6 +++++-
 drivers/gpu/drm/stm/drv.c                                    |  4 +++-
 drivers/gpu/drm/sun4i/sun4i_framebuffer.c                    |  4 +++-
 drivers/gpu/drm/sysfb/corebootdrm.c                          |  4 +++-
 drivers/gpu/drm/sysfb/efidrm.c                               |  4 +++-
 drivers/gpu/drm/sysfb/ofdrm.c                                |  4 +++-
 drivers/gpu/drm/sysfb/simpledrm.c                            |  4 +++-
 drivers/gpu/drm/sysfb/vesadrm.c                              |  4 +++-
 drivers/gpu/drm/tegra/drm.c                                  |  4 +++-
 drivers/gpu/drm/tests/drm_atomic_commit_test.c               |  4 +++-
 drivers/gpu/drm/tests/drm_atomic_test.c                      |  4 +++-
 drivers/gpu/drm/tests/drm_bridge_test.c                      | 12 +++++++++---
 drivers/gpu/drm/tests/drm_hdmi_state_helper_test.c           |  4 +++-
 drivers/gpu/drm/tidss/tidss_drv.c                            |  6 +++++-
 drivers/gpu/drm/tilcdc/tilcdc_drv.c                          |  4 +++-
 drivers/gpu/drm/tiny/appletbdrm.c                            |  4 +---
 drivers/gpu/drm/tiny/arcpgu.c                                |  4 +++-
 drivers/gpu/drm/tiny/bochs.c                                 |  4 +---
 drivers/gpu/drm/tiny/cirrus-qemu.c                           |  4 +++-
 drivers/gpu/drm/tiny/gm12u320.c                              |  4 +++-
 drivers/gpu/drm/tiny/hx8357d.c                               |  4 +++-
 drivers/gpu/drm/tiny/ili9163.c                               |  4 +++-
 drivers/gpu/drm/tiny/ili9225.c                               |  4 +++-
 drivers/gpu/drm/tiny/ili9341.c                               |  4 +++-
 drivers/gpu/drm/tiny/ili9486.c                               |  4 +++-
 drivers/gpu/drm/tiny/mi0283qt.c                              |  4 +++-
 drivers/gpu/drm/tiny/panel-mipi-dbi.c                        |  4 +++-
 drivers/gpu/drm/tiny/pixpaper.c                              |  4 +++-
 drivers/gpu/drm/tiny/repaper.c                               |  4 +++-
 drivers/gpu/drm/tiny/sharp-memory.c                          |  4 +++-
 drivers/gpu/drm/tve200/tve200_drv.c                          |  4 +++-
 drivers/gpu/drm/udl/udl_modeset.c                            |  4 +++-
 drivers/gpu/drm/vboxvideo/vbox_mode.c                        |  5 ++++-
 drivers/gpu/drm/vc4/vc4_kms.c                                |  4 +++-
 drivers/gpu/drm/verisilicon/vs_drm.c                         |  4 +++-
 drivers/gpu/drm/virtio/virtgpu_display.c                     |  3 +--
 drivers/gpu/drm/vkms/vkms_output.c                           |  4 +---
 drivers/gpu/drm/vmwgfx/vmwgfx_ldu.c                          |  4 +++-
 drivers/gpu/drm/vmwgfx/vmwgfx_scrn.c                         |  4 +---
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c                         |  4 +---
 drivers/gpu/drm/xen/xen_drm_front_kms.c                      |  4 +++-
 drivers/gpu/drm/xlnx/zynqmp_kms.c                            |  6 ++++--
 95 files changed, 277 insertions(+), 124 deletions(-)
---
base-commit: d2a8cee91bfa8616f713c7c8f539a81e8e3554ea
change-id: 20260712-drm-no-more-config-reset-1ea89f56693d

Best regards,
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-- 
Maxime Ripard <mripard@kernel.org>

[PATCH RESEND 34/83] drm/qxl: Switch to drm_mode_config_create_initial_state

[Maxime Ripard]

drm_mode_config_reset() has a dual role: it creates the initial KMS
state at probe time, and resets hardware and software state during
suspend/resume cycles.

Since the two roles need different behaviors (notably for objects like
drm_private_obj that must persist across suspend/resume),
drm_mode_config_create_initial_state() was introduced to handle only
the initial state creation at probe time.

Switch to drm_mode_config_create_initial_state().

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: spice-devel@lists.freedesktop.org
Cc: virtualization@lists.linux.dev
---
 drivers/gpu/drm/qxl/qxl_display.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 204c47d61373..7f719e200d31 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -1313,6 +1313,5 @@ int qxl_modeset_init(struct qxl_device *qdev)
 		return ret;
 
-	drm_mode_config_reset(&qdev->ddev);
-	return 0;
+	return drm_mode_config_create_initial_state(&qdev->ddev);
 }
 

-- 
2.55.0

Re: [PATCH RESEND 34/83] drm/qxl: Switch to drm_mode_config_create_initial_state

[sashiko-bot]

Thank you for your contribution! Sashiko AI review found 1 potential issue(s) to consider:
- [High] drm/qxl: missing monitors object cleanup and UAF in qxl_modeset_init()
--

commit c9a17dafeda120436479a0975b3829acefce4188
Author: Maxime Ripard <mripard@kernel.org>

drm/qxl: Switch to drm_mode_config_create_initial_state

This commit replaces drm_mode_config_reset() with
drm_mode_config_create_initial_state() in qxl_modeset_init() to handle initial
KMS state creation at probe time.

> diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
> index 204c47d613732..7f719e200d317 100644
> --- a/drivers/gpu/drm/qxl/qxl_display.c
> +++ b/drivers/gpu/drm/qxl/qxl_display.c
> @@ -1312,8 +1312,7 @@ int qxl_modeset_init(struct qxl_device *qdev)
>  	if (ret)
>  		return ret;
>  
> -	drm_mode_config_reset(&qdev->ddev);
> -	return 0;
> +	return drm_mode_config_create_initial_state(&qdev->ddev);
>  }

[Severity: High]
If drm_mode_config_create_initial_state() fails and returns an error here, can
this cause a use-after-free of qdev->monitors_config_bo and an unmapped MMIO
write to qdev->ram_header->monitors_config during probe teardown?

Earlier in qxl_modeset_init(), qxl_create_monitors_object() allocates, pins,
and vmaps qdev->monitors_config_bo, sets qdev->ram_header->monitors_config,
and allocates qdev->dumb_heads.

When qxl_modeset_init() returns an error to qxl_pci_probe(), the error path
jumps past qxl_modeset_fini() directly to the unload label:

drivers/gpu/drm/qxl/qxl_drv.c:qxl_pci_probe() {
	...
	ret = qxl_modeset_init(qdev);
	if (ret)
		goto unload;
	...
poll_fini:
	drm_kms_helper_poll_fini(&qdev->ddev);
	qxl_modeset_fini(qdev);
unload:
	qxl_device_fini(qdev);
}

In qxl_device_fini(), qxl_gem_fini() -> qxl_bo_force_delete() force-frees
qdev->monitors_config_bo while it is still pinned and vmapped (triggering
WARN_ON_ONCE(bo->map_count > 0) in qxl_ttm_bo_destroy() and leaving the
qdev->monitors_config_bo pointer non-NULL), and iounmap() unmaps
qdev->ram_header.

When qxl_pci_probe() then returns the error code, devres cleanup for
devm_drm_dev_alloc() runs qxl_drm_release() -> qxl_modeset_fini() ->
qxl_destroy_monitors_object():

drivers/gpu/drm/qxl/qxl_display.c:qxl_destroy_monitors_object() {
	if (!qdev->monitors_config_bo)
		return 0;
	...
	qdev->ram_header->monitors_config = 0;

	ret = qxl_bo_vunmap_and_unpin(qdev->monitors_config_bo);
	if (ret)
		return ret;

	qxl_bo_unref(&qdev->monitors_config_bo);
	return 0;
}

Because qdev->monitors_config_bo is still non-NULL, should qxl_modeset_init()
call qxl_destroy_monitors_object(qdev) on failure before returning?

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261105-drm-no-more-config-reset-v1-0-1f58d1e33380@kernel.org?part=34

[PATCH RESEND 61/83] drm/bochs: Switch to drm_mode_config_create_initial_state

[Maxime Ripard]

drm_mode_config_reset() has a dual role: it creates the initial KMS
state at probe time, and resets hardware and software state during
suspend/resume cycles.

Since the two roles need different behaviors (notably for objects like
drm_private_obj that must persist across suspend/resume),
drm_mode_config_create_initial_state() was introduced to handle only
the initial state creation at probe time.

Switch to drm_mode_config_create_initial_state().

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux.dev
---
 drivers/gpu/drm/tiny/bochs.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index 771d59b92f67..c24adbcb77a3 100644
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -684,7 +684,5 @@ static int bochs_kms_init(struct bochs_device *bochs)
 		return ret;
 
-	drm_mode_config_reset(dev);
-
-	return 0;
+	return drm_mode_config_create_initial_state(dev);
 }
 

-- 
2.55.0

Re: [PATCH RESEND 61/83] drm/bochs: Switch to drm_mode_config_create_initial_state

[sashiko-bot]

> drm_mode_config_reset() has a dual role: it creates the initial KMS
> state at probe time, and resets hardware and software state during
> suspend/resume cycles.
> 
> Since the two roles need different behaviors (notably for objects like
> drm_private_obj that must persist across suspend/resume),
> drm_mode_config_create_initial_state() was introduced to handle only
> the initial state creation at probe time.
> 
> Switch to drm_mode_config_create_initial_state().
> 
> Signed-off-by: Maxime Ripard <mripard@kernel.org>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261105-drm-no-more-config-reset-v1-0-1f58d1e33380@kernel.org?part=61

[PATCH RESEND 62/83] drm/cirrus-qemu: Switch to drm_mode_config_create_initial_state

[Maxime Ripard]

drm_mode_config_reset() has a dual role: it creates the initial KMS
state at probe time, and resets hardware and software state during
suspend/resume cycles.

Since the two roles need different behaviors (notably for objects like
drm_private_obj that must persist across suspend/resume),
drm_mode_config_create_initial_state() was introduced to handle only
the initial state creation at probe time.

Switch to drm_mode_config_create_initial_state().

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Cc: Dave Airlie <airlied@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: virtualization@lists.linux.dev
---
 drivers/gpu/drm/tiny/cirrus-qemu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tiny/cirrus-qemu.c b/drivers/gpu/drm/tiny/cirrus-qemu.c
index 9e3051b9c3f7..98664f573ff8 100644
--- a/drivers/gpu/drm/tiny/cirrus-qemu.c
+++ b/drivers/gpu/drm/tiny/cirrus-qemu.c
@@ -624,5 +624,7 @@ static int cirrus_pci_probe(struct pci_dev *pdev,
 		return ret;
 
-	drm_mode_config_reset(dev);
+	ret = drm_mode_config_create_initial_state(dev);
+	if (ret)
+		return ret;
 
 	pci_set_drvdata(pdev, dev);

-- 
2.55.0

Re: [PATCH RESEND 62/83] drm/cirrus-qemu: Switch to drm_mode_config_create_initial_state

[sashiko-bot]

> drm_mode_config_reset() has a dual role: it creates the initial KMS
> state at probe time, and resets hardware and software state during
> suspend/resume cycles.
> 
> Since the two roles need different behaviors (notably for objects like
> drm_private_obj that must persist across suspend/resume),
> drm_mode_config_create_initial_state() was introduced to handle only
> the initial state creation at probe time.
> 
> Switch to drm_mode_config_create_initial_state().
> 
> Signed-off-by: Maxime Ripard <mripard@kernel.org>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261105-drm-no-more-config-reset-v1-0-1f58d1e33380@kernel.org?part=62

[PATCH RESEND 79/83] drm/virtio: Switch to drm_mode_config_create_initial_state

[Maxime Ripard]

drm_mode_config_reset() has a dual role: it creates the initial KMS
state at probe time, and resets hardware and software state during
suspend/resume cycles.

Since the two roles need different behaviors (notably for objects like
drm_private_obj that must persist across suspend/resume),
drm_mode_config_create_initial_state() was introduced to handle only
the initial state creation at probe time.

Switch to drm_mode_config_create_initial_state().

Signed-off-by: Maxime Ripard <mripard@kernel.org>
---
Cc: Chia-I Wu <olvaffe@gmail.com>
Cc: David Airlie <airlied@redhat.com>
Cc: Dmitry Osipenko <dmitry.osipenko@collabora.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gurchetan Singh <gurchetansingh@chromium.org>
Cc: virtualization@lists.linux.dev
---
 drivers/gpu/drm/virtio/virtgpu_display.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c b/drivers/gpu/drm/virtio/virtgpu_display.c
index f0ed9bd27a91..dfc3aed03b8e 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -397,6 +397,5 @@ int virtio_gpu_modeset_init(struct virtio_gpu_device *vgdev)
 		return ret;
 
-	drm_mode_config_reset(vgdev->ddev);
-	return 0;
+	return drm_mode_config_create_initial_state(vgdev->ddev);
 }
 

-- 
2.55.0

Re: [PATCH RESEND 79/83] drm/virtio: Switch to drm_mode_config_create_initial_state

[sashiko-bot]

> drm_mode_config_reset() has a dual role: it creates the initial KMS
> state at probe time, and resets hardware and software state during
> suspend/resume cycles.
> 
> Since the two roles need different behaviors (notably for objects like
> drm_private_obj that must persist across suspend/resume),
> drm_mode_config_create_initial_state() was introduced to handle only
> the initial state creation at probe time.
> 
> Switch to drm_mode_config_create_initial_state().
> 
> Signed-off-by: Maxime Ripard <mripard@kernel.org>

Sashiko has reviewed this patch and found no issues.

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20261105-drm-no-more-config-reset-v1-0-1f58d1e33380@kernel.org?part=79