From: Alex Deucher <alexander.deucher@amd.com>
Date: Wed, 23 Oct 2024 20:37:52 +0000 (-0400)
Subject: drm/amdgpu: Adjust debugfs register access permissions
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=b46dadf7e3cfe26d0b109c9c3d81b278d6c75361;p=users%2Fdwmw2%2Flinux.git

drm/amdgpu: Adjust debugfs register access permissions

Regular users shouldn't have read access.

Reviewed-by: Yang Wang <kevinyang.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit c0cfd2e652553d607b910be47d0cc5a7f3a78641)
Cc: stable@vger.kernel.org
---

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index cbef720de7797..29b45e3708857 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1648,7 +1648,7 @@ int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
 
 	for (i = 0; i < ARRAY_SIZE(debugfs_regs); i++) {
 		ent = debugfs_create_file(debugfs_regs_names[i],
-					  S_IFREG | 0444, root,
+					  S_IFREG | 0400, root,
 					  adev, debugfs_regs[i]);
 		if (!i && !IS_ERR_OR_NULL(ent))
 			i_size_write(ent->d_inode, adev->rmmio_size);