From: Guchun Chen <guchun.chen@amd.com>
Date: Fri, 5 May 2023 13:20:11 +0800
Subject: [PATCH] drm/amd/pm: parse pp_handle under appropriate conditions
References: bsc#1012628
Patch-mainline: 6.3.3
Git-commit: 58d9b9a14b47c2a3da6effcbb01607ad7edc0275
commit 58d9b9a14b47c2a3da6effcbb01607ad7edc0275 upstream.
amdgpu_dpm_is_overdrive_supported is a common API across all
asics, so we should cast pp_handle into correct structure
under different power frameworks.
v2: using return directly to simplify code
v3: SI asic does not carry od_enabled member in pp_handle, and update Fixes tag
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2541
Fixes: eb4900aa4c49 ("drm/amdgpu: Fix kernel NULL pointer dereference in dpm functions")
Suggested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/gpu/drm/amd/pm/amdgpu_dpm.c | 20 +++++++++++++-------
1 file changed, 13 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 6e79d335..29720d0b 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -1432,15 +1432,21 @@ int amdgpu_dpm_get_smu_prv_buf_details(struct amdgpu_device *adev,
int amdgpu_dpm_is_overdrive_supported(struct amdgpu_device *adev)
{
- struct pp_hwmgr *hwmgr = adev->powerplay.pp_handle;
- struct smu_context *smu = adev->powerplay.pp_handle;
+ if (is_support_sw_smu(adev)) {
+ struct smu_context *smu = adev->powerplay.pp_handle;
+
+ return (smu->od_enabled || smu->is_apu);
+ } else {
+ struct pp_hwmgr *hwmgr;
- if ((is_support_sw_smu(adev) && smu->od_enabled) ||
- (is_support_sw_smu(adev) && smu->is_apu) ||
- (!is_support_sw_smu(adev) && hwmgr->od_enabled))
- return true;
+ /* SI asic does not carry od_enabled */
+ if (adev->family == AMDGPU_FAMILY_SI)
+ return false;
- return false;
+ hwmgr = (struct pp_hwmgr *)adev->powerplay.pp_handle;
+
+ return hwmgr->od_enabled;
+ }
}
int amdgpu_dpm_set_pp_table(struct amdgpu_device *adev,
--
2.35.3