This is a note to let you know that I've just added the patch titled
drm/amdgpu/debugfs: fix error code when smc register accessors are NULL
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-debugfs-fix-error-code-when-smc-register-.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 4a5a398771ad7bc8c50ec06c9ec53bbb449f1a6d
Author: Alex Deucher <alexander.deucher@xxxxxxx>
Date: Mon Nov 27 17:26:29 2023 -0500
drm/amdgpu/debugfs: fix error code when smc register accessors are NULL
[ Upstream commit afe58346d5d3887b3e49ff623d2f2e471f232a8d ]
Should be -EOPNOTSUPP.
Fixes: 5104fdf50d32 ("drm/amdgpu: Fix a null pointer access when the smc_rreg pointer is NULL")
Reviewed-by: Christian König <christian.koenig@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index d81034023144..48b8b5600402 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -393,7 +393,7 @@ static ssize_t amdgpu_debugfs_regs_smc_read(struct file *f, char __user *buf,
int r;
if (!adev->smc_rreg)
- return -EPERM;
+ return -EOPNOTSUPP;
if (size & 0x3 || *pos & 0x3)
return -EINVAL;
@@ -435,7 +435,7 @@ static ssize_t amdgpu_debugfs_regs_smc_write(struct file *f, const char __user *
int r;
if (!adev->smc_wreg)
- return -EPERM;
+ return -EOPNOTSUPP;
if (size & 0x3 || *pos & 0x3)
return -EINVAL;
