aboutsummaryrefslogtreecommitdiffstats
path: root/meta-r1000/recipes-kernel/linux/linux-yocto-4.14.71/5454-drm-amdgpu-make-function-pointers-mandatory.patch
blob: 734f17ef52a66531124e9c84b929f79990d32f1c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
From a9413fb0d2ce71dd013c2634a03789f30c74b31c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 17 Sep 2018 15:41:45 +0200
Subject: [PATCH 5454/5725] drm/amdgpu: make function pointers mandatory
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

We always want those to be setup correctly.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Raveendra Talabattula <raveendra.talabattula@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/cik_ih.c      |  3 +--
 drivers/gpu/drm/amd/amdgpu/cik_sdma.c    | 18 +++++++-----------
 drivers/gpu/drm/amd/amdgpu/cz_ih.c       |  3 +--
 drivers/gpu/drm/amd/amdgpu/dce_v10_0.c   |  3 +--
 drivers/gpu/drm/amd/amdgpu/dce_v11_0.c   |  3 +--
 drivers/gpu/drm/amd/amdgpu/dce_v6_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/dce_v8_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/dce_virtual.c |  3 +--
 drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/iceland_ih.c  |  3 +--
 drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c   | 18 +++++++-----------
 drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c   | 18 +++++++-----------
 drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c   | 18 +++++++-----------
 drivers/gpu/drm/amd/amdgpu/si_dma.c      | 18 +++++++-----------
 drivers/gpu/drm/amd/amdgpu/si_ih.c       |  3 +--
 drivers/gpu/drm/amd/amdgpu/tonga_ih.c    |  3 +--
 drivers/gpu/drm/amd/amdgpu/vega10_ih.c   |  3 +--
 20 files changed, 50 insertions(+), 85 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/cik_ih.c b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
index 44d10c2..e75183e 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_ih.c
@@ -468,8 +468,7 @@ static const struct amdgpu_ih_funcs cik_ih_funcs = {
 
 static void cik_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &cik_ih_funcs;
+	adev->irq.ih_funcs = &cik_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version cik_ih_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
index e1b56e7..2a0dbac 100644
--- a/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
+++ b/drivers/gpu/drm/amd/amdgpu/cik_sdma.c
@@ -1378,10 +1378,8 @@ static const struct amdgpu_buffer_funcs cik_sdma_buffer_funcs = {
 
 static void cik_sdma_set_buffer_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mman.buffer_funcs == NULL) {
-		adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
-	}
+	adev->mman.buffer_funcs = &cik_sdma_buffer_funcs;
+	adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 }
 
 static const struct amdgpu_vm_pte_funcs cik_sdma_vm_pte_funcs = {
@@ -1396,14 +1394,12 @@ static void cik_sdma_set_vm_pte_funcs(struct amdgpu_device *adev)
 {
 	unsigned i;
 
-	if (adev->vm_manager.vm_pte_funcs == NULL) {
-		adev->vm_manager.vm_pte_funcs = &cik_sdma_vm_pte_funcs;
-		for (i = 0; i < adev->sdma.num_instances; i++)
-			adev->vm_manager.vm_pte_rings[i] =
-				&adev->sdma.instance[i].ring;
+	adev->vm_manager.vm_pte_funcs = &cik_sdma_vm_pte_funcs;
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		adev->vm_manager.vm_pte_rings[i] =
+			&adev->sdma.instance[i].ring;
 
-		adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
-	}
+	adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version cik_sdma_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/cz_ih.c b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
index 960c29e..9385da1 100644
--- a/drivers/gpu/drm/amd/amdgpu/cz_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/cz_ih.c
@@ -449,8 +449,7 @@ static const struct amdgpu_ih_funcs cz_ih_funcs = {
 
 static void cz_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &cz_ih_funcs;
+	adev->irq.ih_funcs = &cz_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version cz_ih_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
index de88444..f4cbe2e 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
@@ -3577,8 +3577,7 @@ static const struct amdgpu_display_funcs dce_v10_0_display_funcs = {
 
 static void dce_v10_0_set_display_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mode_info.funcs == NULL)
-		adev->mode_info.funcs = &dce_v10_0_display_funcs;
+	adev->mode_info.funcs = &dce_v10_0_display_funcs;
 }
 
 static const struct amdgpu_irq_src_funcs dce_v10_0_crtc_irq_funcs = {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
index d45c2d8..0a5a3de 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
@@ -3710,8 +3710,7 @@ static const struct amdgpu_display_funcs dce_v11_0_display_funcs = {
 
 static void dce_v11_0_set_display_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mode_info.funcs == NULL)
-		adev->mode_info.funcs = &dce_v11_0_display_funcs;
+	adev->mode_info.funcs = &dce_v11_0_display_funcs;
 }
 
 static const struct amdgpu_irq_src_funcs dce_v11_0_crtc_irq_funcs = {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
index 3d214bd..2204aad 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
@@ -3383,8 +3383,7 @@ static const struct amdgpu_display_funcs dce_v6_0_display_funcs = {
 
 static void dce_v6_0_set_display_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mode_info.funcs == NULL)
-		adev->mode_info.funcs = &dce_v6_0_display_funcs;
+	adev->mode_info.funcs = &dce_v6_0_display_funcs;
 }
 
 static const struct amdgpu_irq_src_funcs dce_v6_0_crtc_irq_funcs = {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
index 4798f45..0f8a372 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
@@ -3465,8 +3465,7 @@ static const struct amdgpu_display_funcs dce_v8_0_display_funcs = {
 
 static void dce_v8_0_set_display_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mode_info.funcs == NULL)
-		adev->mode_info.funcs = &dce_v8_0_display_funcs;
+	adev->mode_info.funcs = &dce_v8_0_display_funcs;
 }
 
 static const struct amdgpu_irq_src_funcs dce_v8_0_crtc_irq_funcs = {
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
index 7145e7a..d089b25 100644
--- a/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
+++ b/drivers/gpu/drm/amd/amdgpu/dce_virtual.c
@@ -659,8 +659,7 @@ static const struct amdgpu_display_funcs dce_virtual_display_funcs = {
 
 static void dce_virtual_set_display_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mode_info.funcs == NULL)
-		adev->mode_info.funcs = &dce_virtual_display_funcs;
+	adev->mode_info.funcs = &dce_virtual_display_funcs;
 }
 
 static int dce_virtual_pageflip(struct amdgpu_device *adev,
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
index b8335d8..890308e 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v6_0.c
@@ -1178,8 +1178,7 @@ static const struct amdgpu_irq_src_funcs gmc_v6_0_irq_funcs = {
 
 static void gmc_v6_0_set_gmc_funcs(struct amdgpu_device *adev)
 {
-	if (adev->gmc.gmc_funcs == NULL)
-		adev->gmc.gmc_funcs = &gmc_v6_0_gmc_funcs;
+	adev->gmc.gmc_funcs = &gmc_v6_0_gmc_funcs;
 }
 
 static void gmc_v6_0_set_irq_funcs(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
index 61ffd5c..d7d5075 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v7_0.c
@@ -1388,8 +1388,7 @@ static const struct amdgpu_irq_src_funcs gmc_v7_0_irq_funcs = {
 
 static void gmc_v7_0_set_gmc_funcs(struct amdgpu_device *adev)
 {
-	if (adev->gmc.gmc_funcs == NULL)
-		adev->gmc.gmc_funcs = &gmc_v7_0_gmc_funcs;
+	adev->gmc.gmc_funcs = &gmc_v7_0_gmc_funcs;
 }
 
 static void gmc_v7_0_set_irq_funcs(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
index 199f1a5..1b3da69 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v8_0.c
@@ -1737,8 +1737,7 @@ static const struct amdgpu_irq_src_funcs gmc_v8_0_irq_funcs = {
 
 static void gmc_v8_0_set_gmc_funcs(struct amdgpu_device *adev)
 {
-	if (adev->gmc.gmc_funcs == NULL)
-		adev->gmc.gmc_funcs = &gmc_v8_0_gmc_funcs;
+	adev->gmc.gmc_funcs = &gmc_v8_0_gmc_funcs;
 }
 
 static void gmc_v8_0_set_irq_funcs(struct amdgpu_device *adev)
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index a0fd3a7..c804846 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -592,8 +592,7 @@ static const struct amdgpu_gmc_funcs gmc_v9_0_gmc_funcs = {
 
 static void gmc_v9_0_set_gmc_funcs(struct amdgpu_device *adev)
 {
-	if (adev->gmc.gmc_funcs == NULL)
-		adev->gmc.gmc_funcs = &gmc_v9_0_gmc_funcs;
+	adev->gmc.gmc_funcs = &gmc_v9_0_gmc_funcs;
 }
 
 static int gmc_v9_0_early_init(void *handle)
diff --git a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
index 842c4b6..45ef0a8 100644
--- a/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/iceland_ih.c
@@ -447,8 +447,7 @@ static const struct amdgpu_ih_funcs iceland_ih_funcs = {
 
 static void iceland_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &iceland_ih_funcs;
+	adev->irq.ih_funcs = &iceland_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version iceland_ih_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
index cc22269..6db0d7a 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v2_4.c
@@ -1304,10 +1304,8 @@ static const struct amdgpu_buffer_funcs sdma_v2_4_buffer_funcs = {
 
 static void sdma_v2_4_set_buffer_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mman.buffer_funcs == NULL) {
-		adev->mman.buffer_funcs = &sdma_v2_4_buffer_funcs;
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
-	}
+	adev->mman.buffer_funcs = &sdma_v2_4_buffer_funcs;
+	adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 }
 
 static const struct amdgpu_vm_pte_funcs sdma_v2_4_vm_pte_funcs = {
@@ -1322,14 +1320,12 @@ static void sdma_v2_4_set_vm_pte_funcs(struct amdgpu_device *adev)
 {
 	unsigned i;
 
-	if (adev->vm_manager.vm_pte_funcs == NULL) {
-		adev->vm_manager.vm_pte_funcs = &sdma_v2_4_vm_pte_funcs;
-		for (i = 0; i < adev->sdma.num_instances; i++)
-			adev->vm_manager.vm_pte_rings[i] =
-				&adev->sdma.instance[i].ring;
+	adev->vm_manager.vm_pte_funcs = &sdma_v2_4_vm_pte_funcs;
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		adev->vm_manager.vm_pte_rings[i] =
+			&adev->sdma.instance[i].ring;
 
-		adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
-	}
+	adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version sdma_v2_4_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
index 4b7df45..deb16c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v3_0.c
@@ -1745,10 +1745,8 @@ static const struct amdgpu_buffer_funcs sdma_v3_0_buffer_funcs = {
 
 static void sdma_v3_0_set_buffer_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mman.buffer_funcs == NULL) {
-		adev->mman.buffer_funcs = &sdma_v3_0_buffer_funcs;
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
-	}
+	adev->mman.buffer_funcs = &sdma_v3_0_buffer_funcs;
+	adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 }
 
 static const struct amdgpu_vm_pte_funcs sdma_v3_0_vm_pte_funcs = {
@@ -1763,14 +1761,12 @@ static void sdma_v3_0_set_vm_pte_funcs(struct amdgpu_device *adev)
 {
 	unsigned i;
 
-	if (adev->vm_manager.vm_pte_funcs == NULL) {
-		adev->vm_manager.vm_pte_funcs = &sdma_v3_0_vm_pte_funcs;
-		for (i = 0; i < adev->sdma.num_instances; i++)
-			adev->vm_manager.vm_pte_rings[i] =
-				&adev->sdma.instance[i].ring;
+	adev->vm_manager.vm_pte_funcs = &sdma_v3_0_vm_pte_funcs;
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		adev->vm_manager.vm_pte_rings[i] =
+			&adev->sdma.instance[i].ring;
 
-		adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
-	}
+	adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version sdma_v3_0_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
index 0304797..f797eaf 100644
--- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c
@@ -1818,10 +1818,8 @@ static const struct amdgpu_buffer_funcs sdma_v4_0_buffer_funcs = {
 
 static void sdma_v4_0_set_buffer_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mman.buffer_funcs == NULL) {
-		adev->mman.buffer_funcs = &sdma_v4_0_buffer_funcs;
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
-	}
+	adev->mman.buffer_funcs = &sdma_v4_0_buffer_funcs;
+	adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 }
 
 static const struct amdgpu_vm_pte_funcs sdma_v4_0_vm_pte_funcs = {
@@ -1836,14 +1834,12 @@ static void sdma_v4_0_set_vm_pte_funcs(struct amdgpu_device *adev)
 {
 	unsigned i;
 
-	if (adev->vm_manager.vm_pte_funcs == NULL) {
-		adev->vm_manager.vm_pte_funcs = &sdma_v4_0_vm_pte_funcs;
-		for (i = 0; i < adev->sdma.num_instances; i++)
-			adev->vm_manager.vm_pte_rings[i] =
-				&adev->sdma.instance[i].ring;
+	adev->vm_manager.vm_pte_funcs = &sdma_v4_0_vm_pte_funcs;
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		adev->vm_manager.vm_pte_rings[i] =
+			&adev->sdma.instance[i].ring;
 
-		adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
-	}
+	adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version sdma_v4_0_ip_block = {
diff --git a/drivers/gpu/drm/amd/amdgpu/si_dma.c b/drivers/gpu/drm/amd/amdgpu/si_dma.c
index 93a7773..f3693dc 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_dma.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_dma.c
@@ -880,10 +880,8 @@ static const struct amdgpu_buffer_funcs si_dma_buffer_funcs = {
 
 static void si_dma_set_buffer_funcs(struct amdgpu_device *adev)
 {
-	if (adev->mman.buffer_funcs == NULL) {
-		adev->mman.buffer_funcs = &si_dma_buffer_funcs;
-		adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
-	}
+	adev->mman.buffer_funcs = &si_dma_buffer_funcs;
+	adev->mman.buffer_funcs_ring = &adev->sdma.instance[0].ring;
 }
 
 static const struct amdgpu_vm_pte_funcs si_dma_vm_pte_funcs = {
@@ -898,14 +896,12 @@ static void si_dma_set_vm_pte_funcs(struct amdgpu_device *adev)
 {
 	unsigned i;
 
-	if (adev->vm_manager.vm_pte_funcs == NULL) {
-		adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs;
-		for (i = 0; i < adev->sdma.num_instances; i++)
-			adev->vm_manager.vm_pte_rings[i] =
-				&adev->sdma.instance[i].ring;
+	adev->vm_manager.vm_pte_funcs = &si_dma_vm_pte_funcs;
+	for (i = 0; i < adev->sdma.num_instances; i++)
+		adev->vm_manager.vm_pte_rings[i] =
+			&adev->sdma.instance[i].ring;
 
-		adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
-	}
+	adev->vm_manager.vm_pte_num_rings = adev->sdma.num_instances;
 }
 
 const struct amdgpu_ip_block_version si_dma_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/si_ih.c b/drivers/gpu/drm/amd/amdgpu/si_ih.c
index 60dad63..97711d3 100644
--- a/drivers/gpu/drm/amd/amdgpu/si_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/si_ih.c
@@ -308,8 +308,7 @@ static const struct amdgpu_ih_funcs si_ih_funcs = {
 
 static void si_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &si_ih_funcs;
+	adev->irq.ih_funcs = &si_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version si_ih_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
index 52853d8..a79a377 100644
--- a/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/tonga_ih.c
@@ -513,8 +513,7 @@ static const struct amdgpu_ih_funcs tonga_ih_funcs = {
 
 static void tonga_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &tonga_ih_funcs;
+	adev->irq.ih_funcs = &tonga_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version tonga_ih_ip_block =
diff --git a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
index 2559498..d0d23a6 100644
--- a/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
+++ b/drivers/gpu/drm/amd/amdgpu/vega10_ih.c
@@ -494,8 +494,7 @@ static const struct amdgpu_ih_funcs vega10_ih_funcs = {
 
 static void vega10_ih_set_interrupt_funcs(struct amdgpu_device *adev)
 {
-	if (adev->irq.ih_funcs == NULL)
-		adev->irq.ih_funcs = &vega10_ih_funcs;
+	adev->irq.ih_funcs = &vega10_ih_funcs;
 }
 
 const struct amdgpu_ip_block_version vega10_ih_ip_block =
-- 
2.7.4