From:   Sasha Levin <sashal@kernel.org>
To:     linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc:     Horatio Zhang <Hongkun.Zhang@amd.com>,
        longlyao <Longlong.Yao@amd.com>,
        Guchun Chen <guchun.chen@amd.com>,
        Alex Deucher <alexander.deucher@amd.com>,
        Sasha Levin <sashal@kernel.org>, christian.koenig@amd.com,
        airlied@linux.ie, amd-gfx@lists.freedesktop.org,
        dri-devel@lists.freedesktop.org
Subject: [PATCH AUTOSEL 6.1 12/13] drm/amdgpu: fix ttm_bo calltrace warning in psp_hw_fini
Date:   Tue, 14 Mar 2023 08:43:24 -0400
Message-Id: <20230314124325.470931-12-sashal@kernel.org>
In-Reply-To: <20230314124325.470931-1-sashal@kernel.org>
References: <20230314124325.470931-1-sashal@kernel.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

From: Horatio Zhang <Hongkun.Zhang@amd.com>

[ Upstream commit 23f4a2d29ba57bf88095f817de5809d427fcbe7e ]

The call trace occurs when the amdgpu is removed after
the mode1 reset. During mode1 reset, from suspend to resume,
there is no need to reinitialize the ta firmware buffer
which caused the bo pin_count increase redundantly.

[  489.885525] Call Trace:
[  489.885525]  <TASK>
[  489.885526]  amdttm_bo_put+0x34/0x50 [amdttm]
[  489.885529]  amdgpu_bo_free_kernel+0xe8/0x130 [amdgpu]
[  489.885620]  psp_free_shared_bufs+0xb7/0x150 [amdgpu]
[  489.885720]  psp_hw_fini+0xce/0x170 [amdgpu]
[  489.885815]  amdgpu_device_fini_hw+0x2ff/0x413 [amdgpu]
[  489.885960]  ? blocking_notifier_chain_unregister+0x56/0xb0
[  489.885962]  amdgpu_driver_unload_kms+0x51/0x60 [amdgpu]
[  489.886049]  amdgpu_pci_remove+0x5a/0x140 [amdgpu]
[  489.886132]  ? __pm_runtime_resume+0x60/0x90
[  489.886134]  pci_device_remove+0x3e/0xb0
[  489.886135]  __device_release_driver+0x1ab/0x2a0
[  489.886137]  driver_detach+0xf3/0x140
[  489.886138]  bus_remove_driver+0x6c/0xf0
[  489.886140]  driver_unregister+0x31/0x60
[  489.886141]  pci_unregister_driver+0x40/0x90
[  489.886142]  amdgpu_exit+0x15/0x451 [amdgpu]

Signed-off-by: Horatio Zhang <Hongkun.Zhang@amd.com>
Signed-off-by: longlyao <Longlong.Yao@amd.com>
Reviewed-by: Guchun Chen <guchun.chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
index 087147f09933a..3b8825a3e2336 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp.c
@@ -1695,7 +1695,7 @@ static int psp_hdcp_initialize(struct psp_context *psp)
 	psp->hdcp_context.context.mem_context.shared_mem_size = PSP_HDCP_SHARED_MEM_SIZE;
 	psp->hdcp_context.context.ta_load_type = GFX_CMD_ID_LOAD_TA;
 
-	if (!psp->hdcp_context.context.initialized) {
+	if (!psp->hdcp_context.context.mem_context.shared_buf) {
 		ret = psp_ta_init_shared_buf(psp, &psp->hdcp_context.context.mem_context);
 		if (ret)
 			return ret;
@@ -1762,7 +1762,7 @@ static int psp_dtm_initialize(struct psp_context *psp)
 	psp->dtm_context.context.mem_context.shared_mem_size = PSP_DTM_SHARED_MEM_SIZE;
 	psp->dtm_context.context.ta_load_type = GFX_CMD_ID_LOAD_TA;
 
-	if (!psp->dtm_context.context.initialized) {
+	if (!psp->dtm_context.context.mem_context.shared_buf) {
 		ret = psp_ta_init_shared_buf(psp, &psp->dtm_context.context.mem_context);
 		if (ret)
 			return ret;
@@ -1830,7 +1830,7 @@ static int psp_rap_initialize(struct psp_context *psp)
 	psp->rap_context.context.mem_context.shared_mem_size = PSP_RAP_SHARED_MEM_SIZE;
 	psp->rap_context.context.ta_load_type = GFX_CMD_ID_LOAD_TA;
 
-	if (!psp->rap_context.context.initialized) {
+	if (!psp->rap_context.context.mem_context.shared_buf) {
 		ret = psp_ta_init_shared_buf(psp, &psp->rap_context.context.mem_context);
 		if (ret)
 			return ret;
-- 
2.39.2