From: Christian König <christian.koenig@amd.com>
Date: Tue, 7 Oct 2025 08:10:52 +0000 (+0200)
Subject: drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM
X-Git-Tag: v6.18-rc2~22^2~2^2~6
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=33cc891b56b93cad1a83263eaf2e417436f70c82;p=thirdparty%2Flinux.git

drm/amdgpu: hide VRAM sysfs attributes on GPUs without VRAM

Otherwise accessing them can cause a crash.

Signed-off-by: Christian König <christian.koenig@amd.com>
Tested-by: Mangesh Gadre <Mangesh.Gadre@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Arunpravin Paneer Selvam <Arunpravin.PaneerSelvam@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
index a5adb2ed9b3c6..9d934c07fa6b8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_vram_mgr.c
@@ -234,6 +234,9 @@ static umode_t amdgpu_vram_attrs_is_visible(struct kobject *kobj,
 	    !adev->gmc.vram_vendor)
 		return 0;
 
+	if (!ttm_resource_manager_used(&adev->mman.vram_mgr.manager))
+		return 0;
+
 	return attr->mode;
 }