Commit 48c4aaeef621 ("drm/amdgpu/ttm: Make buffer copy source readonly")
introduces a new parameter @readonly in function amdgpu_ttm_map_buffer()
but doesn't update the documentation, leading to the following warning:

  Warning: drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c:209 function
  parameter 'readonly' not described in 'amdgpu_ttm_map_buffer'

Add the missing description to the kernel doc comments for the readonly
parameter.

Signed-off-by: Arnaud Bonnet <[email protected]>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index 0f86777250fc..d3a875a32af1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -195,6 +195,7 @@ amdgpu_ttm_job_submit(struct amdgpu_device *adev, struct 
amdgpu_ttm_buffer_entit
  * @addr: resulting address inside the MC address space
  * @vm_needs_flush: out, set true if a GART window was programmed (VMID 0 flush
  *                 needed) or false for a direct address
+ * @readonly: true if the mapping should be created with non-writeable pages
  *
  * Setup one of the GART windows to access a specific piece of memory or return
  * the physical address for local memory.
-- 
2.53.0

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