From: jsg <jsg@openbsd.org>
Date: Mon, 29 Apr 2024 06:40:11 +0000 (+0000)
Subject: drm/amdgpu: remove invalid resource->start check v2
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=a4189769c268b6b8e7e61c73c8d5a1558cd2eadb;p=openbsd

drm/amdgpu: remove invalid resource->start check v2

From Christian Koenig
db74904a93a370807001e5fd64b5850a61f2bf65 in linux-6.6.y/6.6.29
ca7c4507ba87e9fc22e0ecfa819c3664b3e8287b in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/amdgpu/amdgpu_ttm.c b/sys/dev/pci/drm/amd/amdgpu/amdgpu_ttm.c
index 9927850573e..7e2d2a888be 100644
--- a/sys/dev/pci/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/sys/dev/pci/drm/amd/amdgpu/amdgpu_ttm.c
@@ -562,7 +562,6 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_device *bdev,
 				     struct ttm_resource *mem)
 {
 	struct amdgpu_device *adev = amdgpu_ttm_adev(bdev);
-	size_t bus_size = (size_t)mem->size;
 
 	switch (mem->mem_type) {
 	case TTM_PL_SYSTEM:
@@ -573,9 +572,6 @@ static int amdgpu_ttm_io_mem_reserve(struct ttm_device *bdev,
 		break;
 	case TTM_PL_VRAM:
 		mem->bus.offset = mem->start << PAGE_SHIFT;
-		/* check if it's visible */
-		if ((mem->bus.offset + bus_size) > adev->gmc.visible_vram_size)
-			return -EINVAL;
 
 		if (adev->mman.aper_base_kaddr &&
 		    mem->placement & TTM_PL_FLAG_CONTIGUOUS)