[PATCH 00/15] amdgpu: remove load and unload callbacks (v2)

[PATCH 00/15] amdgpu: remove load and unload callbacks (v2)

[Alex Deucher]

These are deprecated and the drm will soon start warning when drivers still
use them.  It was a long and twisty road, but seems to work.

v2: Add additional patch (13/15) which should fix the crash reported by
Thomas Zimmermann.

Alex Deucher (15):
  drm/amdgpu: rename amdgpu_debugfs_preempt_cleanup
  drm/amdgpu/ttm: move debugfs init into core amdgpu debugfs
  drm/amdgpu/pm: move debugfs init into core amdgpu debugfs
  drm/amdgpu/sa: move debugfs init into core amdgpu debugfs
  drm/amdgpu/fence: move debugfs init into core amdgpu debugfs
  drm/amdgpu/gem: move debugfs init into core amdgpu debugfs
  drm/amdgpu/regs: move debugfs init into core amdgpu debugfs
  drm/amdgpu/firmware: move debugfs init into core amdgpu debugfs
  drm/amdgpu: don't call drm_connector_register for non-MST ports
  drm/amdgpu/display: move debugfs init into core amdgpu debugfs
  drm/amd/display: move dpcd debugfs members setup
  drm/amdgpu/display: add a late register connector callback
  drm/amdgpu/display: split dp connector registration
  drm/amdgpu/ring: move debugfs init into core amdgpu debugfs
  drm/amdgpu: drop legacy drm load and unload callbacks

 .../gpu/drm/amd/amdgpu/amdgpu_connectors.c    | 11 ++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c   | 67 ++++++++++++++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h   |  2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    | 17 -----
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       | 13 +++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c     |  3 -
 drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c        |  7 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h    |  1 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c        |  9 +--
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h        |  2 +
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c      | 15 +----
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h      |  4 ++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c       | 14 +---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h       |  3 +
 drivers/gpu/drm/amd/amdgpu/atombios_dp.c      |  8 +--
 drivers/gpu/drm/amd/amdgpu/dce_virtual.c      |  1 -
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 26 +++----
 .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |  3 +
 .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 13 ++--
 19 files changed, 131 insertions(+), 88 deletions(-)

-- 
2.24.1

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[PATCH 01/15] drm/amdgpu: rename amdgpu_debugfs_preempt_cleanup

[Alex Deucher]

to amdgpu_debugfs_fini.  It will be used for other things in
the future.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++--
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h | 2 +-
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index f24ed9a1a3e5..58b5e1b4f814 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1229,7 +1229,7 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
 
-void amdgpu_debugfs_preempt_cleanup(struct amdgpu_device *adev)
+void amdgpu_debugfs_fini(struct amdgpu_device *adev)
 {
 	debugfs_remove(adev->debugfs_preempt);
 }
@@ -1239,7 +1239,7 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 {
 	return 0;
 }
-void amdgpu_debugfs_preempt_cleanup(struct amdgpu_device *adev) { }
+void amdgpu_debugfs_fini(struct amdgpu_device *adev) { }
 int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
 {
 	return 0;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h
index f289d28ad6b2..b382527e359a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h
@@ -34,7 +34,7 @@ struct amdgpu_debugfs {
 int amdgpu_debugfs_regs_init(struct amdgpu_device *adev);
 void amdgpu_debugfs_regs_cleanup(struct amdgpu_device *adev);
 int amdgpu_debugfs_init(struct amdgpu_device *adev);
-void amdgpu_debugfs_preempt_cleanup(struct amdgpu_device *adev);
+void amdgpu_debugfs_fini(struct amdgpu_device *adev);
 int amdgpu_debugfs_add_files(struct amdgpu_device *adev,
 			     const struct drm_info_list *files,
 			     unsigned nfiles);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 8df7727815cb..3b09897eb1e9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3228,7 +3228,7 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 		amdgpu_ucode_sysfs_fini(adev);
 	if (IS_ENABLED(CONFIG_PERF_EVENTS))
 		amdgpu_pmu_fini(adev);
-	amdgpu_debugfs_preempt_cleanup(adev);
+	amdgpu_debugfs_fini(adev);
 	if (amdgpu_discovery && adev->asic_type >= CHIP_NAVI10)
 		amdgpu_discovery_fini(adev);
 }
-- 
2.24.1

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[PATCH 02/15] drm/amdgpu/ttm: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for ttm.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 10 ++++++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c     | 14 ++------------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h     |  3 +++
 3 files changed, 15 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 58b5e1b4f814..f49604c0d0b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1216,6 +1216,8 @@ DEFINE_SIMPLE_ATTRIBUTE(fops_ib_preempt, NULL,
 
 int amdgpu_debugfs_init(struct amdgpu_device *adev)
 {
+	int r;
+
 	adev->debugfs_preempt =
 		debugfs_create_file("amdgpu_preempt_ib", 0600,
 				    adev->ddev->primary->debugfs_root, adev,
@@ -1225,12 +1227,20 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		return -EIO;
 	}
 
+	/* Register debugfs entries for amdgpu_ttm */
+	r = amdgpu_ttm_debugfs_init(adev);
+	if (r) {
+		DRM_ERROR("Failed to init debugfs\n");
+		return r;
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
 
 void amdgpu_debugfs_fini(struct amdgpu_device *adev)
 {
+	amdgpu_ttm_debugfs_fini(adev);
 	debugfs_remove(adev->debugfs_preempt);
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 56f743698868..0c35978626d2 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -66,9 +66,6 @@ static int amdgpu_map_buffer(struct ttm_buffer_object *bo,
 			     struct amdgpu_ring *ring,
 			     uint64_t *addr);
 
-static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
-static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev);
-
 static int amdgpu_invalidate_caches(struct ttm_bo_device *bdev, uint32_t flags)
 {
 	return 0;
@@ -1911,12 +1908,6 @@ int amdgpu_ttm_init(struct amdgpu_device *adev)
 		return r;
 	}
 
-	/* Register debugfs entries for amdgpu_ttm */
-	r = amdgpu_ttm_debugfs_init(adev);
-	if (r) {
-		DRM_ERROR("Failed to init debugfs\n");
-		return r;
-	}
 	return 0;
 }
 
@@ -1938,7 +1929,6 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
 	if (!adev->mman.initialized)
 		return;
 
-	amdgpu_ttm_debugfs_fini(adev);
 	amdgpu_ttm_training_reserve_vram_fini(adev);
 	/* return the IP Discovery TMR memory back to VRAM */
 	amdgpu_bo_free_kernel(&adev->discovery_memory, NULL, NULL);
@@ -2545,7 +2535,7 @@ static const struct {
 
 #endif
 
-static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
+int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	unsigned count;
@@ -2581,7 +2571,7 @@ static int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
 #endif
 }
 
-static void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev)
+void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	unsigned i;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index f1ebd424510c..2c4ad5b589d0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -133,4 +133,7 @@ uint64_t amdgpu_ttm_tt_pde_flags(struct ttm_tt *ttm, struct ttm_mem_reg *mem);
 uint64_t amdgpu_ttm_tt_pte_flags(struct amdgpu_device *adev, struct ttm_tt *ttm,
 				 struct ttm_mem_reg *mem);
 
+int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev);
+void amdgpu_ttm_debugfs_fini(struct amdgpu_device *adev);
+
 #endif
-- 
2.24.1

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[PATCH 03/15] drm/amdgpu/pm: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for pm.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 7 +++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c      | 9 +--------
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h      | 2 ++
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index f49604c0d0b8..c1d66cc6e6d8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -31,6 +31,7 @@
 #include <drm/drm_debugfs.h>
 
 #include "amdgpu.h"
+#include "amdgpu_pm.h"
 
 /**
  * amdgpu_debugfs_add_files - Add simple debugfs entries
@@ -1234,6 +1235,12 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		return r;
 	}
 
+	r = amdgpu_debugfs_pm_init(adev);
+	if (r) {
+		DRM_ERROR("Failed to register debugfs file for dpm!\n");
+		return r;
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index b03b1eb7ba04..bc3cf04a1a94 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -41,8 +41,6 @@
 #include "hwmgr.h"
 #define WIDTH_4K 3840
 
-static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev);
-
 static const struct cg_flag_name clocks[] = {
 	{AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
 	{AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
@@ -3398,11 +3396,6 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
 		DRM_ERROR("failed to create device file unique_id\n");
 		return ret;
 	}
-	ret = amdgpu_debugfs_pm_init(adev);
-	if (ret) {
-		DRM_ERROR("Failed to register debugfs file for dpm!\n");
-		return ret;
-	}
 
 	if ((adev->asic_type >= CHIP_VEGA10) &&
 	    !(adev->flags & AMD_IS_APU)) {
@@ -3669,7 +3662,7 @@ static const struct drm_info_list amdgpu_pm_info_list[] = {
 };
 #endif
 
-static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev)
+int amdgpu_debugfs_pm_init(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	return amdgpu_debugfs_add_files(adev, amdgpu_pm_info_list, ARRAY_SIZE(amdgpu_pm_info_list));
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
index 3da1da277805..5db0ef86e84c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
@@ -43,4 +43,6 @@ void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable);
 void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable);
 void amdgpu_dpm_enable_jpeg(struct amdgpu_device *adev, bool enable);
 
+int amdgpu_debugfs_pm_init(struct amdgpu_device *adev);
+
 #endif
-- 
2.24.1

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[PATCH 04/15] drm/amdgpu/sa: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for SA (sub allocator).

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c      | 7 ++-----
 drivers/gpu/drm/amd/amdgpu/amdgpu_object.h  | 1 +
 3 files changed, 7 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index c1d66cc6e6d8..84c5e9f23c76 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1241,6 +1241,10 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		return r;
 	}
 
+	if (amdgpu_debugfs_sa_init(adev)) {
+		dev_err(adev->dev, "failed to register debugfs file for SA\n");
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
index 6e0f97afb030..abf286f2bc5e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c
@@ -48,7 +48,6 @@
  * produce command buffers which are send to the kernel and
  * put in IBs for execution by the requested ring.
  */
-static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
 
 /**
  * amdgpu_ib_get - request an IB (Indirect Buffer)
@@ -295,9 +294,7 @@ int amdgpu_ib_pool_init(struct amdgpu_device *adev)
 	}
 
 	adev->ib_pool_ready = true;
-	if (amdgpu_debugfs_sa_init(adev)) {
-		dev_err(adev->dev, "failed to register debugfs file for SA\n");
-	}
+
 	return 0;
 }
 
@@ -421,7 +418,7 @@ static const struct drm_info_list amdgpu_debugfs_sa_list[] = {
 
 #endif
 
-static int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
+int amdgpu_debugfs_sa_init(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_sa_list, 1);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
index 26a654cbd530..7d41f7b9a340 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.h
@@ -330,6 +330,7 @@ void amdgpu_sa_bo_free(struct amdgpu_device *adev,
 void amdgpu_sa_bo_dump_debug_info(struct amdgpu_sa_manager *sa_manager,
 					 struct seq_file *m);
 #endif
+int amdgpu_debugfs_sa_init(struct amdgpu_device *adev);
 
 bool amdgpu_bo_support_uswc(u64 bo_flags);
 
-- 
2.24.1

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[PATCH 05/15] drm/amdgpu/fence: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for fence handling.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 3 +++
 drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c   | 3 ---
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 84c5e9f23c76..bcd10daa6e39 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1245,6 +1245,9 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		dev_err(adev->dev, "failed to register debugfs file for SA\n");
 	}
 
+	if (amdgpu_debugfs_fence_init(adev))
+		dev_err(adev->dev, "fence debugfs file creation failed\n");
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 3c01252b1e0e..7531527067df 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -503,9 +503,6 @@ int amdgpu_fence_driver_init_ring(struct amdgpu_ring *ring,
  */
 int amdgpu_fence_driver_init(struct amdgpu_device *adev)
 {
-	if (amdgpu_debugfs_fence_init(adev))
-		dev_err(adev->dev, "fence debugfs file creation failed\n");
-
 	return 0;
 }
 
-- 
2.24.1

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[PATCH 06/15] drm/amdgpu/gem: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for gem.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 4 ----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index bcd10daa6e39..cb7db7edfc3f 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1248,6 +1248,10 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 	if (amdgpu_debugfs_fence_init(adev))
 		dev_err(adev->dev, "fence debugfs file creation failed\n");
 
+	r = amdgpu_debugfs_gem_init(adev);
+	if (r)
+		DRM_ERROR("registering gem debugfs failed (%d).\n", r);
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 3b09897eb1e9..64a275664c72 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3091,10 +3091,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	} else
 		adev->ucode_sysfs_en = true;
 
-	r = amdgpu_debugfs_gem_init(adev);
-	if (r)
-		DRM_ERROR("registering gem debugfs failed (%d).\n", r);
-
 	r = amdgpu_debugfs_regs_init(adev);
 	if (r)
 		DRM_ERROR("registering register debugfs failed (%d).\n", r);
-- 
2.24.1

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[PATCH 07/15] drm/amdgpu/regs: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for register access files.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 4 ----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index cb7db7edfc3f..7721f1416cdb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1252,6 +1252,10 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 	if (r)
 		DRM_ERROR("registering gem debugfs failed (%d).\n", r);
 
+	r = amdgpu_debugfs_regs_init(adev);
+	if (r)
+		DRM_ERROR("registering register debugfs failed (%d).\n", r);
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 64a275664c72..d84a61e18bf8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3091,10 +3091,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	} else
 		adev->ucode_sysfs_en = true;
 
-	r = amdgpu_debugfs_regs_init(adev);
-	if (r)
-		DRM_ERROR("registering register debugfs failed (%d).\n", r);
-
 	r = amdgpu_debugfs_firmware_init(adev);
 	if (r)
 		DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
-- 
2.24.1

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[PATCH 08/15] drm/amdgpu/firmware: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for firmware.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 4 ++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c  | 4 ----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 7721f1416cdb..5bf43f20ec30 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1256,6 +1256,10 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 	if (r)
 		DRM_ERROR("registering register debugfs failed (%d).\n", r);
 
+	r = amdgpu_debugfs_firmware_init(adev);
+	if (r)
+		DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index d84a61e18bf8..4dc7145368fc 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3091,10 +3091,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	} else
 		adev->ucode_sysfs_en = true;
 
-	r = amdgpu_debugfs_firmware_init(adev);
-	if (r)
-		DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
-
 	r = amdgpu_debugfs_init(adev);
 	if (r)
 		DRM_ERROR("Creating debugfs files failed (%d).\n", r);
-- 
2.24.1

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[PATCH 09/15] drm/amdgpu: don't call drm_connector_register for non-MST ports

[Alex Deucher]

The core does this for us now.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c    | 1 -
 drivers/gpu/drm/amd/amdgpu/dce_virtual.c          | 1 -
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 -
 3 files changed, 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index a62cbc8199de..ec1501e3a63a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -1931,7 +1931,6 @@ amdgpu_connector_add(struct amdgpu_device *adev,
 		connector->polled = DRM_CONNECTOR_POLL_HPD;
 
 	connector->display_info.subpixel_order = subpixel_order;
-	drm_connector_register(connector);
 
 	if (has_aux)
 		amdgpu_atombios_dp_aux_init(amdgpu_connector);
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index e4f94863332c..3c9f2d2490a5 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -609,7 +609,6 @@ static int dce_virtual_connector_encoder_init(struct amdgpu_device *adev,
 	connector->display_info.subpixel_order = SubPixelHorizontalRGB;
 	connector->interlace_allowed = false;
 	connector->doublescan_allowed = false;
-	drm_connector_register(connector);
 
 	/* link them */
 	drm_connector_attach_encoder(connector, encoder);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index bd798b6bdf0f..50137df9cdad 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5839,7 +5839,6 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
 	drm_connector_attach_encoder(
 		&aconnector->base, &aencoder->base);
 
-	drm_connector_register(&aconnector->base);
 #if defined(CONFIG_DEBUG_FS)
 	connector_debugfs_init(aconnector);
 	aconnector->debugfs_dpcd_address = 0;
-- 
2.24.1

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[PATCH 10/15] drm/amdgpu/display: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for display.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c       | 6 ++++++
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 -----
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 5bf43f20ec30..82d30bae2ba0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -32,6 +32,7 @@
 
 #include "amdgpu.h"
 #include "amdgpu_pm.h"
+#include "amdgpu_dm_debugfs.h"
 
 /**
  * amdgpu_debugfs_add_files - Add simple debugfs entries
@@ -1260,6 +1261,11 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 	if (r)
 		DRM_ERROR("registering firmware debugfs failed (%d).\n", r);
 
+	if (amdgpu_device_has_dc_support(adev)) {
+		if (dtn_debugfs_init(adev))
+			DRM_ERROR("amdgpu: failed initialize dtn debugfs support.\n");
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 50137df9cdad..81c8d8c61d62 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -991,11 +991,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 		goto error;
 	}
 
-#if defined(CONFIG_DEBUG_FS)
-	if (dtn_debugfs_init(adev))
-		DRM_ERROR("amdgpu: failed initialize dtn debugfs support.\n");
-#endif
-
 	DRM_DEBUG_DRIVER("KMS initialized.\n");
 
 	return 0;
-- 
2.24.1

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[PATCH 11/15] drm/amd/display: move dpcd debugfs members setup

[Alex Deucher]

Into the function that creates the debugfs files rather
than setting them explicitly in the callers.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c           | 2 --
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c   | 3 +++
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 --
 3 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 81c8d8c61d62..af8155708569 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -5836,8 +5836,6 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
 
 #if defined(CONFIG_DEBUG_FS)
 	connector_debugfs_init(aconnector);
-	aconnector->debugfs_dpcd_address = 0;
-	aconnector->debugfs_dpcd_size = 0;
 #endif
 
 	if (connector_type == DRM_MODE_CONNECTOR_DisplayPort
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index ead5c05eec92..6bc0bdc8835c 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -1066,6 +1066,9 @@ void connector_debugfs_init(struct amdgpu_dm_connector *connector)
 	debugfs_create_file_unsafe("force_yuv420_output", 0644, dir, connector,
 				   &force_yuv420_output_fops);
 
+	connector->debugfs_dpcd_address = 0;
+	connector->debugfs_dpcd_size = 0;
+
 }
 
 /*
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 5672f7765919..3959c942c88b 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -158,8 +158,6 @@ amdgpu_dm_mst_connector_late_register(struct drm_connector *connector)
 
 #if defined(CONFIG_DEBUG_FS)
 	connector_debugfs_init(amdgpu_dm_connector);
-	amdgpu_dm_connector->debugfs_dpcd_address = 0;
-	amdgpu_dm_connector->debugfs_dpcd_size = 0;
 #endif
 
 	return drm_dp_mst_connector_late_register(connector, port);
-- 
2.24.1

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[PATCH 12/15] drm/amdgpu/display: add a late register connector callback

[Alex Deucher]

To handle debugfs setup on non DP MST connectors.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c  | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index af8155708569..b6190079ed3f 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -4486,6 +4486,19 @@ amdgpu_dm_connector_atomic_duplicate_state(struct drm_connector *connector)
 	return &new_state->base;
 }
 
+static int
+amdgpu_dm_connector_late_register(struct drm_connector *connector)
+{
+	struct amdgpu_dm_connector *amdgpu_dm_connector =
+		to_amdgpu_dm_connector(connector);
+
+#if defined(CONFIG_DEBUG_FS)
+	connector_debugfs_init(amdgpu_dm_connector);
+#endif
+
+	return 0;
+}
+
 static const struct drm_connector_funcs amdgpu_dm_connector_funcs = {
 	.reset = amdgpu_dm_connector_funcs_reset,
 	.detect = amdgpu_dm_connector_detect,
@@ -4495,6 +4508,7 @@ static const struct drm_connector_funcs amdgpu_dm_connector_funcs = {
 	.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
 	.atomic_set_property = amdgpu_dm_connector_atomic_set_property,
 	.atomic_get_property = amdgpu_dm_connector_atomic_get_property,
+	.late_register = amdgpu_dm_connector_late_register,
 	.early_unregister = amdgpu_dm_connector_unregister
 };
 
@@ -5834,10 +5848,6 @@ static int amdgpu_dm_connector_init(struct amdgpu_display_manager *dm,
 	drm_connector_attach_encoder(
 		&aconnector->base, &aencoder->base);
 
-#if defined(CONFIG_DEBUG_FS)
-	connector_debugfs_init(aconnector);
-#endif
-
 	if (connector_type == DRM_MODE_CONNECTOR_DisplayPort
 		|| connector_type == DRM_MODE_CONNECTOR_eDP)
 		amdgpu_dm_initialize_dp_connector(dm, aconnector);
-- 
2.24.1

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[PATCH 13/15] drm/amdgpu/display: split dp connector registration

[Alex Deucher]

Split into init and register functions to avoid a segfault
in some configs when the load/unload callbacks are removed.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c        | 10 ++++++++++
 drivers/gpu/drm/amd/amdgpu/atombios_dp.c              |  8 +-------
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c   | 11 ++++++++---
 3 files changed, 19 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index ec1501e3a63a..635f6c9f625c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -1461,6 +1461,14 @@ static enum drm_mode_status amdgpu_connector_dp_mode_valid(struct drm_connector
 	return MODE_OK;
 }
 
+static int
+amdgpu_connector_late_register(struct drm_connector *connector)
+{
+	struct amdgpu_connector *amdgpu_connector = to_amdgpu_connector(connector);
+
+	return drm_dp_aux_register(&amdgpu_connector->ddc_bus->aux);
+}
+
 static const struct drm_connector_helper_funcs amdgpu_connector_dp_helper_funcs = {
 	.get_modes = amdgpu_connector_dp_get_modes,
 	.mode_valid = amdgpu_connector_dp_mode_valid,
@@ -1475,6 +1483,7 @@ static const struct drm_connector_funcs amdgpu_connector_dp_funcs = {
 	.early_unregister = amdgpu_connector_unregister,
 	.destroy = amdgpu_connector_destroy,
 	.force = amdgpu_connector_dvi_force,
+	.late_register = amdgpu_connector_late_register,
 };
 
 static const struct drm_connector_funcs amdgpu_connector_edp_funcs = {
@@ -1485,6 +1494,7 @@ static const struct drm_connector_funcs amdgpu_connector_edp_funcs = {
 	.early_unregister = amdgpu_connector_unregister,
 	.destroy = amdgpu_connector_destroy,
 	.force = amdgpu_connector_dvi_force,
+	.late_register = amdgpu_connector_late_register,
 };
 
 void
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index ea702a64f807..dd1e3530399d 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -186,16 +186,10 @@ amdgpu_atombios_dp_aux_transfer(struct drm_dp_aux *aux, struct drm_dp_aux_msg *m
 
 void amdgpu_atombios_dp_aux_init(struct amdgpu_connector *amdgpu_connector)
 {
-	int ret;
-
 	amdgpu_connector->ddc_bus->rec.hpd = amdgpu_connector->hpd.hpd;
 	amdgpu_connector->ddc_bus->aux.dev = amdgpu_connector->base.kdev;
 	amdgpu_connector->ddc_bus->aux.transfer = amdgpu_atombios_dp_aux_transfer;
-	ret = drm_dp_aux_register(&amdgpu_connector->ddc_bus->aux);
-	if (!ret)
-		amdgpu_connector->ddc_bus->has_aux = true;
-
-	WARN(ret, "drm_dp_aux_register_i2c_bus() failed with error %d\n", ret);
+	drm_dp_aux_init(&amdgpu_connector->ddc_bus->aux);
 }
 
 /***** general DP utility functions *****/
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
index 3959c942c88b..a4e6f9d39e12 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c
@@ -155,6 +155,13 @@ amdgpu_dm_mst_connector_late_register(struct drm_connector *connector)
 	struct amdgpu_dm_connector *amdgpu_dm_connector =
 		to_amdgpu_dm_connector(connector);
 	struct drm_dp_mst_port *port = amdgpu_dm_connector->port;
+	int r;
+
+	r = drm_dp_aux_register(&amdgpu_dm_connector->dm_dp_aux.aux);
+	if (r)
+		return r;
+	drm_dp_cec_register_connector(&amdgpu_dm_connector->dm_dp_aux.aux,
+				      connector);
 
 #if defined(CONFIG_DEBUG_FS)
 	connector_debugfs_init(amdgpu_dm_connector);
@@ -484,9 +491,7 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,
 	aconnector->dm_dp_aux.aux.transfer = dm_dp_aux_transfer;
 	aconnector->dm_dp_aux.ddc_service = aconnector->dc_link->ddc;
 
-	drm_dp_aux_register(&aconnector->dm_dp_aux.aux);
-	drm_dp_cec_register_connector(&aconnector->dm_dp_aux.aux,
-				      &aconnector->base);
+	drm_dp_aux_init(&aconnector->dm_dp_aux.aux);
 
 	if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_eDP)
 		return;
-- 
2.24.1

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[PATCH 14/15] drm/amdgpu/ring: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for rings.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 23 ++++++++++++++++++++-
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c    | 15 +++-----------
 drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h    |  4 ++++
 3 files changed, 29 insertions(+), 13 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 82d30bae2ba0..a7e6b5de2c62 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1218,7 +1218,7 @@ DEFINE_SIMPLE_ATTRIBUTE(fops_ib_preempt, NULL,
 
 int amdgpu_debugfs_init(struct amdgpu_device *adev)
 {
-	int r;
+	int r, i;
 
 	adev->debugfs_preempt =
 		debugfs_create_file("amdgpu_preempt_ib", 0600,
@@ -1266,12 +1266,33 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 			DRM_ERROR("amdgpu: failed initialize dtn debugfs support.\n");
 	}
 
+	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
+		struct amdgpu_ring *ring = adev->rings[i];
+
+		if (!ring)
+			continue;
+
+		if (amdgpu_debugfs_ring_init(adev, ring)) {
+			DRM_ERROR("Failed to register debugfs file for rings !\n");
+		}
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
 
 void amdgpu_debugfs_fini(struct amdgpu_device *adev)
 {
+	int i;
+
+	for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
+		struct amdgpu_ring *ring = adev->rings[i];
+
+		if (!ring)
+			continue;
+
+		amdgpu_debugfs_ring_fini(ring);
+	}
 	amdgpu_ttm_debugfs_fini(adev);
 	debugfs_remove(adev->debugfs_preempt);
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index e5c83e164d82..539be138260e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -48,9 +48,6 @@
  * wptr.  The GPU then starts fetching commands and executes
  * them until the pointers are equal again.
  */
-static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-				    struct amdgpu_ring *ring);
-static void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
 
 /**
  * amdgpu_ring_alloc - allocate space on the ring buffer
@@ -334,10 +331,6 @@ int amdgpu_ring_init(struct amdgpu_device *adev, struct amdgpu_ring *ring,
 	for (i = 0; i < DRM_SCHED_PRIORITY_MAX; ++i)
 		atomic_set(&ring->num_jobs[i], 0);
 
-	if (amdgpu_debugfs_ring_init(adev, ring)) {
-		DRM_ERROR("Failed to register debugfs file for rings !\n");
-	}
-
 	return 0;
 }
 
@@ -367,8 +360,6 @@ void amdgpu_ring_fini(struct amdgpu_ring *ring)
 			      &ring->gpu_addr,
 			      (void **)&ring->ring);
 
-	amdgpu_debugfs_ring_fini(ring);
-
 	dma_fence_put(ring->vmid_wait);
 	ring->vmid_wait = NULL;
 	ring->me = 0;
@@ -485,8 +476,8 @@ static const struct file_operations amdgpu_debugfs_ring_fops = {
 
 #endif
 
-static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
-				    struct amdgpu_ring *ring)
+int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+			     struct amdgpu_ring *ring)
 {
 #if defined(CONFIG_DEBUG_FS)
 	struct drm_minor *minor = adev->ddev->primary;
@@ -507,7 +498,7 @@ static int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
 	return 0;
 }
 
-static void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring)
+void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring)
 {
 #if defined(CONFIG_DEBUG_FS)
 	debugfs_remove(ring->ent);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 5134d0dd6dc2..0d098dafd23c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -329,4 +329,8 @@ static inline void amdgpu_ring_write_multiple(struct amdgpu_ring *ring,
 
 int amdgpu_ring_test_helper(struct amdgpu_ring *ring);
 
+int amdgpu_debugfs_ring_init(struct amdgpu_device *adev,
+			     struct amdgpu_ring *ring);
+void amdgpu_debugfs_ring_fini(struct amdgpu_ring *ring);
+
 #endif
-- 
2.24.1

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[PATCH 15/15] drm/amdgpu: drop legacy drm load and unload callbacks

[Alex Deucher]

We've moved the debugfs handling into a centralized place
so we can remove the legacy load an unload callbacks.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_device.c |  5 -----
 drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c    | 13 +++++++++++--
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 4dc7145368fc..12aab522f459 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -3091,10 +3091,6 @@ int amdgpu_device_init(struct amdgpu_device *adev,
 	} else
 		adev->ucode_sysfs_en = true;
 
-	r = amdgpu_debugfs_init(adev);
-	if (r)
-		DRM_ERROR("Creating debugfs files failed (%d).\n", r);
-
 	if ((amdgpu_testing & 1)) {
 		if (adev->accel_working)
 			amdgpu_test_moves(adev);
@@ -3216,7 +3212,6 @@ void amdgpu_device_fini(struct amdgpu_device *adev)
 		amdgpu_ucode_sysfs_fini(adev);
 	if (IS_ENABLED(CONFIG_PERF_EVENTS))
 		amdgpu_pmu_fini(adev);
-	amdgpu_debugfs_fini(adev);
 	if (amdgpu_discovery && adev->asic_type >= CHIP_NAVI10)
 		amdgpu_discovery_fini(adev);
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
index f26532998781..9753c55b317d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
@@ -1031,6 +1031,7 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 			    const struct pci_device_id *ent)
 {
 	struct drm_device *dev;
+	struct amdgpu_device *adev;
 	unsigned long flags = ent->driver_data;
 	int ret, retry = 0;
 	bool supports_atomic = false;
@@ -1100,6 +1101,8 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 
 	pci_set_drvdata(pdev, dev);
 
+	amdgpu_driver_load_kms(dev, ent->driver_data);
+
 retry_init:
 	ret = drm_dev_register(dev, ent->driver_data);
 	if (ret == -EAGAIN && ++retry <= 3) {
@@ -1110,6 +1113,11 @@ static int amdgpu_pci_probe(struct pci_dev *pdev,
 	} else if (ret)
 		goto err_pci;
 
+	adev = dev->dev_private;
+	ret = amdgpu_debugfs_init(adev);
+	if (ret)
+		DRM_ERROR("Creating debugfs files failed (%d).\n", ret);
+
 	return 0;
 
 err_pci:
@@ -1123,6 +1131,7 @@ static void
 amdgpu_pci_remove(struct pci_dev *pdev)
 {
 	struct drm_device *dev = pci_get_drvdata(pdev);
+	struct amdgpu_device *adev = dev->dev_private;
 
 #ifdef MODULE
 	if (THIS_MODULE->state != MODULE_STATE_GOING)
@@ -1130,6 +1139,8 @@ amdgpu_pci_remove(struct pci_dev *pdev)
 		DRM_ERROR("Hotplug removal is not supported\n");
 	drm_dev_unplug(dev);
 	drm_dev_put(dev);
+	amdgpu_debugfs_fini(adev);
+	amdgpu_driver_unload_kms(dev);
 	pci_disable_device(pdev);
 	pci_set_drvdata(pdev, NULL);
 }
@@ -1434,11 +1445,9 @@ static struct drm_driver kms_driver = {
 	    DRIVER_GEM |
 	    DRIVER_RENDER | DRIVER_MODESET | DRIVER_SYNCOBJ |
 	    DRIVER_SYNCOBJ_TIMELINE,
-	.load = amdgpu_driver_load_kms,
 	.open = amdgpu_driver_open_kms,
 	.postclose = amdgpu_driver_postclose_kms,
 	.lastclose = amdgpu_driver_lastclose_kms,
-	.unload = amdgpu_driver_unload_kms,
 	.get_vblank_counter = amdgpu_get_vblank_counter_kms,
 	.enable_vblank = amdgpu_enable_vblank_kms,
 	.disable_vblank = amdgpu_disable_vblank_kms,
-- 
2.24.1

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Re: [PATCH 00/15] amdgpu: remove load and unload callbacks (v2)

[Thomas Zimmermann]

[-- Attachment #1.1.1: Type: text/plain, Size: 8785 bytes --]

Hi

Am 05.02.20 um 16:39 schrieb Alex Deucher:
> These are deprecated and the drm will soon start warning when drivers still
> use them.  It was a long and twisty road, but seems to work.
> 
> v2: Add additional patch (13/15) which should fix the crash reported by
> Thomas Zimmermann.

I tried again, but there's still a bug.

[   10.976846]
==================================================================
[   10.984099] BUG: KASAN: null-ptr-deref in drm_dp_aux_register+0xcc/0xf0
[   10.990705] Read of size 8 at addr 0000000000000050 by task
systemd-udevd/385
[   10.997828]
[   11.000633]
==================================================================
[   11.007889] BUG: kernel NULL pointer dereference, address:
0000000000000050
[   11.014836] #PF: supervisor read access in kernel mode
[   11.019962] #PF: error_code(0x0000) - not-present page
[   11.025087] PGD 0 P4D 0
[   11.027614] Oops: 0000 [#1] SMP KASAN PTI
[   11.031614] CPU: 5 PID: 385 Comm: systemd-udevd Tainted: G    B
 E     5.5.0-1-default+ #235
[   11.040464] Hardware name: Dell Inc. OptiPlex 9020/0N4YC8, BIOS A24
10/24/2018
[   11.047671] RIP: 0010:drm_dp_aux_register+0xcc/0xf0
[   11.052536] Code: 41 5c c3 4c 89 e7 e8 53 b4 28 00 85 c0 74 eb 48 89
ef 89 44 24 04 e8 23 1d 02 00 8b 44 24 04 eb d9 48 8d 7b 50 e8 d4 98 8f
ff <48> 8b 73 50 48 85 f6 75 aa 48 89 df e8 c3 98 8f ff 48 8b 33 eb 9d
[   11.071266] RSP: 0018:ffffc90000a6f600 EFLAGS: 00010282
[   11.076480] RAX: ffff8886da438700 RBX: 0000000000000000 RCX:
dffffc0000000000
[   11.083599] RDX: 0000000000000007 RSI: 0000000000000004 RDI:
0000000000000297
[   11.090716] RBP: ffff8886c0ca8900 R08: ffffffffaf19ec71 R09:
fffffbfff6246b5d
[   11.097834] R10: fffffbfff6246b5c R11: ffffffffb1235ae3 R12:
ffff8886c0ca8908
[   11.104953] R13: ffff8886baa0d050 R14: ffff8886baa0d100 R15:
ffffffffc0bdb180
[   11.112073] FS:  00007fcdc3effdc0(0000) GS:ffff8886fc200000(0000)
knlGS:0000000000000000
[   11.120147] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.125878] CR2: 0000000000000050 CR3: 00000006da450006 CR4:
00000000001606e0
[   11.132997] Call Trace:
[   11.135441]  drm_connector_register.part.0+0x92/0xe0
[   11.140396]  drm_connector_register_all+0xb9/0x110
[   11.145178]  ? drm_connector_unregister_all+0xc0/0xc0
[   11.150221]  drm_modeset_register_all+0x5b/0x70
[   11.154742]  drm_dev_register+0x1cd/0x210
[   11.158886]  amdgpu_pci_probe+0x142/0x1d0 [amdgpu]
[   11.163809]  ? amdgpu_pmops_runtime_idle+0xf0/0xf0 [amdgpu]
[   11.169371]  local_pci_probe+0x74/0xc0
[   11.173115]  pci_device_probe+0x1c9/0x2d0
[   11.177115]  ? pci_device_remove+0x180/0x180
[   11.181378]  ? sysfs_do_create_link_sd.isra.0+0x74/0xd0
[   11.186595]  really_probe+0x184/0x530
[   11.190263]  driver_probe_device+0x119/0x180
[   11.194526]  device_driver_attach+0x87/0x90
[   11.198701]  ? device_driver_attach+0x90/0x90
[   11.203049]  __driver_attach+0xb0/0x1a0
[   11.206877]  ? device_driver_attach+0x90/0x90
[   11.211226]  bus_for_each_dev+0xdd/0x120
[   11.215141]  ? subsys_dev_iter_exit+0x10/0x10
[   11.219493]  bus_add_driver+0x22c/0x2e0
[   11.223321]  driver_register+0xd8/0x160
[   11.227148]  ? 0xffffffffc0d8f000
[   11.230456]  do_one_initcall+0xbd/0x3c0
[   11.234283]  ? trace_event_raw_event_initcall_finish+0x120/0x120
[   11.240275]  ? rcu_read_lock_sched_held+0x85/0x90
[   11.244970]  ? rcu_read_lock_bh_held+0xa0/0xa0
[   11.249404]  ? debug_lockdep_rcu_enabled.part.0+0x16/0x30
[   11.254792]  ? kmem_cache_alloc_trace+0x51e/0x6b0
[   11.259487]  ? kasan_unpoison_shadow+0x33/0x40
[   11.263924]  do_init_module+0xfd/0x390
[   11.267664]  load_module+0x255b/0x2910
[   11.271415]  ? layout_and_allocate+0x850/0x850
[   11.275849]  ? ima_post_read_file+0x141/0x150
[   11.280197]  ? ima_read_file+0x10/0x10
[   11.283938]  ? kernel_read+0x9b/0xc0
[   11.287513]  ? __do_sys_finit_module+0x110/0x180
[   11.292122]  __do_sys_finit_module+0x110/0x180
[   11.296558]  ? __ia32_sys_init_module+0x40/0x40
[   11.301088]  ? lockdep_hardirqs_off+0xbe/0x100
[   11.305523]  ? mark_held_locks+0x23/0xa0
[   11.309438]  ? do_syscall_64+0x14/0x2f0
[   11.313267]  do_syscall_64+0x72/0x2f0
[   11.316921]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   11.321960] RIP: 0033:0x7fcdc4b60059
[   11.325528] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00
48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f
05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d f7 5d 0c 00 f7 d8 64 89 01 48
[   11.344260] RSP: 002b:00007ffc3abc6008 EFLAGS: 00000246 ORIG_RAX:
0000000000000139
[   11.351815] RAX: ffffffffffffffda RBX: 0000564c25e0fb30 RCX:
00007fcdc4b60059
[   11.358934] RDX: 0000000000000000 RSI: 00007fcdc47a989d RDI:
0000000000000010
[   11.366050] RBP: 0000000000020000 R08: 0000000000000000 R09:
0000564c25e0f380
[   11.373169] R10: 0000000000000010 R11: 0000000000000246 R12:
00007fcdc47a989d
[   11.380289] R13: 0000000000000000 R14: 0000564c25e42910 R15:
0000564c25e0fb30
[   11.387412] Modules linked in: sr_mod(E) crc32c_intel(E) cdrom(E)
serio_raw(E) amdgpu(E+) uas(E) usb_storage(E) amd_iommu_v2(E)
gpu_sched(E) ttm(E) wmi(E) video(E) sg(E) dm_multipath(E) dm_mod(E)
scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh)
[   11.408846] CR2: 0000000000000050
[   11.412167] ---[ end trace fc1f8e4f7508319c ]---
[   11.416798] RIP: 0010:drm_dp_aux_register+0xcc/0xf0
[   11.421673] Code: 41 5c c3 4c 89 e7 e8 53 b4 28 00 85 c0 74 eb 48 89
ef 89 44 24 04 e8 23 1d 02 00 8b 44 24 04 eb d9 48 8d 7b 50 e8 d4 98 8f
ff <48> 8b 73 50 48 85 f6 75 aa 48 89 df e8 c3 98 8f ff 48 8b 33 eb 9d
[   11.440432] RSP: 0018:ffffc90000a6f600 EFLAGS: 00010282
[   11.445668] RAX: ffff8886da438700 RBX: 0000000000000000 RCX:
dffffc0000000000
[   11.452812] RDX: 0000000000000007 RSI: 0000000000000004 RDI:
0000000000000297
[   11.459956] RBP: ffff8886c0ca8900 R08: ffffffffaf19ec71 R09:
fffffbfff6246b5d
[   11.467100] R10: fffffbfff6246b5c R11: ffffffffb1235ae3 R12:
ffff8886c0ca8908
[   11.474243] R13: ffff8886baa0d050 R14: ffff8886baa0d100 R15:
ffffffffc0bdb180
[   11.481391] FS:  00007fcdc3effdc0(0000) GS:ffff8886fc200000(0000)
knlGS:0000000000000000
[   11.489488] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   11.495244] CR2: 0000000000000050 CR3: 00000006da450006 CR4:
00000000001606e0


Best regards
Thomas


> 
> Alex Deucher (15):
>   drm/amdgpu: rename amdgpu_debugfs_preempt_cleanup
>   drm/amdgpu/ttm: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/pm: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/sa: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/fence: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/gem: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/regs: move debugfs init into core amdgpu debugfs
>   drm/amdgpu/firmware: move debugfs init into core amdgpu debugfs
>   drm/amdgpu: don't call drm_connector_register for non-MST ports
>   drm/amdgpu/display: move debugfs init into core amdgpu debugfs
>   drm/amd/display: move dpcd debugfs members setup
>   drm/amdgpu/display: add a late register connector callback
>   drm/amdgpu/display: split dp connector registration
>   drm/amdgpu/ring: move debugfs init into core amdgpu debugfs
>   drm/amdgpu: drop legacy drm load and unload callbacks
> 
>  .../gpu/drm/amd/amdgpu/amdgpu_connectors.c    | 11 ++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c   | 67 ++++++++++++++++++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.h   |  2 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c    | 17 -----
>  drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c       | 13 +++-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c     |  3 -
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ib.c        |  7 +-
>  drivers/gpu/drm/amd/amdgpu/amdgpu_object.h    |  1 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c        |  9 +--
>  drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h        |  2 +
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c      | 15 +----
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h      |  4 ++
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c       | 14 +---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h       |  3 +
>  drivers/gpu/drm/amd/amdgpu/atombios_dp.c      |  8 +--
>  drivers/gpu/drm/amd/amdgpu/dce_virtual.c      |  1 -
>  .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 26 +++----
>  .../amd/display/amdgpu_dm/amdgpu_dm_debugfs.c |  3 +
>  .../display/amdgpu_dm/amdgpu_dm_mst_types.c   | 13 ++--
>  19 files changed, 131 insertions(+), 88 deletions(-)
> 

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer


[-- Attachment #1.2: OpenPGP digital signature --]
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[-- Attachment #2: Type: text/plain, Size: 154 bytes --]

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[PATCH 03/15] drm/amdgpu/pm: move debugfs init into core amdgpu debugfs

[Alex Deucher]

In order to remove the load and unload drm callbacks,
we need to reorder the init sequence to move all the drm
debugfs file handling.  Do this for pm.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 7 +++++++
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c      | 9 +--------
 drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h      | 2 ++
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index f49604c0d0b8..c1d66cc6e6d8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -31,6 +31,7 @@
 #include <drm/drm_debugfs.h>
 
 #include "amdgpu.h"
+#include "amdgpu_pm.h"
 
 /**
  * amdgpu_debugfs_add_files - Add simple debugfs entries
@@ -1234,6 +1235,12 @@ int amdgpu_debugfs_init(struct amdgpu_device *adev)
 		return r;
 	}
 
+	r = amdgpu_debugfs_pm_init(adev);
+	if (r) {
+		DRM_ERROR("Failed to register debugfs file for dpm!\n");
+		return r;
+	}
+
 	return amdgpu_debugfs_add_files(adev, amdgpu_debugfs_list,
 					ARRAY_SIZE(amdgpu_debugfs_list));
 }
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
index b03b1eb7ba04..bc3cf04a1a94 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c
@@ -41,8 +41,6 @@
 #include "hwmgr.h"
 #define WIDTH_4K 3840
 
-static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev);
-
 static const struct cg_flag_name clocks[] = {
 	{AMD_CG_SUPPORT_GFX_MGCG, "Graphics Medium Grain Clock Gating"},
 	{AMD_CG_SUPPORT_GFX_MGLS, "Graphics Medium Grain memory Light Sleep"},
@@ -3398,11 +3396,6 @@ int amdgpu_pm_sysfs_init(struct amdgpu_device *adev)
 		DRM_ERROR("failed to create device file unique_id\n");
 		return ret;
 	}
-	ret = amdgpu_debugfs_pm_init(adev);
-	if (ret) {
-		DRM_ERROR("Failed to register debugfs file for dpm!\n");
-		return ret;
-	}
 
 	if ((adev->asic_type >= CHIP_VEGA10) &&
 	    !(adev->flags & AMD_IS_APU)) {
@@ -3669,7 +3662,7 @@ static const struct drm_info_list amdgpu_pm_info_list[] = {
 };
 #endif
 
-static int amdgpu_debugfs_pm_init(struct amdgpu_device *adev)
+int amdgpu_debugfs_pm_init(struct amdgpu_device *adev)
 {
 #if defined(CONFIG_DEBUG_FS)
 	return amdgpu_debugfs_add_files(adev, amdgpu_pm_info_list, ARRAY_SIZE(amdgpu_pm_info_list));
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
index 3da1da277805..5db0ef86e84c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.h
@@ -43,4 +43,6 @@ void amdgpu_dpm_enable_uvd(struct amdgpu_device *adev, bool enable);
 void amdgpu_dpm_enable_vce(struct amdgpu_device *adev, bool enable);
 void amdgpu_dpm_enable_jpeg(struct amdgpu_device *adev, bool enable);
 
+int amdgpu_debugfs_pm_init(struct amdgpu_device *adev);
+
 #endif
-- 
2.24.1

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