[PATCH 2/2] drm/amdgpu: fix amdgpu_irq_put call trace in vcn_v4_0_hw_fini

[Horatio Zhang]

During the suspend, the vcn_v4_0_hw_init function will
use the amdgpu_irq_put to disable the irq of vcn.inst, but it
was not enabled during the resume process, which resulted in a
call trace during the GPU reset process.

[   44.563572] RIP: 0010:amdgpu_irq_put+0xa4/0xc0 [amdgpu]
[   44.563629] RSP: 0018:ffffb36740edfc90 EFLAGS: 00010246
[   44.563630] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
[   44.563630] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[   44.563631] RBP: ffffb36740edfcb0 R08: 0000000000000000 R09: 0000000000000000
[   44.563631] R10: 0000000000000000 R11: 0000000000000000 R12: ffff954c568e2ea8
[   44.563631] R13: 0000000000000000 R14: ffff954c568c0000 R15: ffff954c568e2ea8
[   44.563632] FS:  0000000000000000(0000) GS:ffff954f584c0000(0000) knlGS:0000000000000000
[   44.563632] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   44.563633] CR2: 00007f028741ba70 CR3: 000000026ca10000 CR4: 0000000000750ee0
[   44.563633] PKRU: 55555554
[   44.563633] Call Trace:
[   44.563634]  <TASK>
[   44.563634]  vcn_v4_0_hw_fini+0x62/0x160 [amdgpu]
[   44.563700]  vcn_v4_0_suspend+0x13/0x30 [amdgpu]
[   44.563755]  amdgpu_device_ip_suspend_phase2+0x240/0x470 [amdgpu]
[   44.563806]  amdgpu_device_ip_suspend+0x41/0x80 [amdgpu]
[   44.563858]  amdgpu_device_pre_asic_reset+0xd9/0x4a0 [amdgpu]
[   44.563909]  amdgpu_device_gpu_recover.cold+0x548/0xcf1 [amdgpu]
[   44.564006]  amdgpu_debugfs_reset_work+0x4c/0x80 [amdgpu]
[   44.564061]  process_one_work+0x21f/0x400
[   44.564062]  worker_thread+0x200/0x3f0
[   44.564063]  ? process_one_work+0x400/0x400
[   44.564064]  kthread+0xee/0x120
[   44.564065]  ? kthread_complete_and_exit+0x20/0x20
[   44.564066]  ret_from_fork+0x22/0x30

Fixes: ea5309de7388 ("drm/amdgpu: add VCN 4.0 RAS poison consumption handling")
Signed-off-by: Horatio Zhang <Hongkun.Zhang at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
index bf0674039598..b55eb1bf3e30 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v4_0.c
@@ -281,6 +281,21 @@ static int vcn_v4_0_hw_init(void *handle)
 	return r;
 }
 
+static int vcn_v4_0_late_init(void *handle)
+{
+	struct amdgpu_device *adev = (struct amdgpu_device *)handle;
+	int i;
+
+	for (i = 0; i < adev->vcn.num_vcn_inst; ++i) {
+		if (adev->vcn.harvest_config & (1 << i))
+			continue;
+
+		amdgpu_irq_get(adev, &adev->vcn.inst[i].irq, 0);
+	}
+
+	return 0;
+}
+
 /**
  * vcn_v4_0_hw_fini - stop the hardware block
  *
@@ -2047,7 +2062,7 @@ static void vcn_v4_0_set_irq_funcs(struct amdgpu_device *adev)
 static const struct amd_ip_funcs vcn_v4_0_ip_funcs = {
 	.name = "vcn_v4_0",
 	.early_init = vcn_v4_0_early_init,
-	.late_init = NULL,
+	.late_init = vcn_v4_0_late_init,
 	.sw_init = vcn_v4_0_sw_init,
 	.sw_fini = vcn_v4_0_sw_fini,
 	.hw_init = vcn_v4_0_hw_init,
-- 
2.34.1