drm/amdgpu/ttm: constify static vm_operations_struct

rikardfalkeborn · ChristianKoenigAMD · commit fff72bb569ee · 2021-02-25T14:40:24.000+01:00
The only usage of amdgpu_ttm_vm_ops is to assign its address to the vm_ops field in the vm_area_struct struct. Make it const to allow the compiler to put it in read-only memory. Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210209234817.55112-2-rikard.falkeborn@gmail.com Signed-off-by: Christian König <christian.koenig@amd.com>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -2002,7 +2002,7 @@ static vm_fault_t amdgpu_ttm_fault(struct vm_fault *vmf)
 	return ret;
 }
 
-static struct vm_operations_struct amdgpu_ttm_vm_ops = {
+static const struct vm_operations_struct amdgpu_ttm_vm_ops = {
 	.fault = amdgpu_ttm_fault,
 	.open = ttm_bo_vm_open,
 	.close = ttm_bo_vm_close,

Original file line number	Diff line number	Diff line change
`@@ -2002,7 +2002,7 @@ static vm_fault_t amdgpu_ttm_fault(struct vm_fault *vmf)`
`2002`	`2002`	`return ret;`
`2003`	`2003`	`}`
`2004`	`2004`
`2005`		`-static struct vm_operations_struct amdgpu_ttm_vm_ops = {`
	`2005`	`+static const struct vm_operations_struct amdgpu_ttm_vm_ops = {`
`2006`	`2006`	`.fault = amdgpu_ttm_fault,`
`2007`	`2007`	`.open = ttm_bo_vm_open,`
`2008`	`2008`	`.close = ttm_bo_vm_close,`