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| author | Andrew Morton <akpm@linux-foundation.org> | 2023-12-06 17:03:50 -0800 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-06 17:03:50 -0800 |
| commit | 0c92218f4e7d4b4a7245d32bea042fa6f9cc39d7 (patch) | |
| tree | 44d6ba1879278a5a1b58178e9b0f799427e52e0e /drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | |
| parent | b2f557a21bc8fffdcd65794eda8a854e024999f3 (diff) | |
| parent | 33cc938e65a98f1d29d0a18403dbbee050dcad9a (diff) | |
| download | lwn-0c92218f4e7d4b4a7245d32bea042fa6f9cc39d7.tar.gz lwn-0c92218f4e7d4b4a7245d32bea042fa6f9cc39d7.zip | |
Merge branch 'master' into mm-hotfixes-stable
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c index a53f436fa9f1..0e61ebdb3f3e 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c @@ -638,6 +638,9 @@ static ssize_t amdgpu_debugfs_regs_didt_read(struct file *f, char __user *buf, if (size & 0x3 || *pos & 0x3) return -EINVAL; + if (!adev->didt_rreg) + return -EOPNOTSUPP; + r = pm_runtime_get_sync(adev_to_drm(adev)->dev); if (r < 0) { pm_runtime_put_autosuspend(adev_to_drm(adev)->dev); @@ -694,6 +697,9 @@ static ssize_t amdgpu_debugfs_regs_didt_write(struct file *f, const char __user if (size & 0x3 || *pos & 0x3) return -EINVAL; + if (!adev->didt_wreg) + return -EOPNOTSUPP; + r = pm_runtime_get_sync(adev_to_drm(adev)->dev); if (r < 0) { pm_runtime_put_autosuspend(adev_to_drm(adev)->dev); |