linux-kernel - [PATCH 3/3] drm/nouveau/ttm: constify static vm_operations

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Date:   Wed, 10 Feb 2021 00:48:17 +0100
From:   Rikard Falkeborn <rikard.falkeborn@...il.com>
To:     David Airlie <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>
Cc:     Christian König <christian.koenig@....com>,
        Alex Deucher <alexander.deucher@....com>,
        Ben Skeggs <bskeggs@...hat.com>,
        Felix Kuehling <Felix.Kuehling@....com>,
        Likun Gao <Likun.Gao@....com>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        nouveau@...ts.freedesktop.org,
        Rikard Falkeborn <rikard.falkeborn@...il.com>
Subject: [PATCH 3/3] drm/nouveau/ttm: constify static vm_operations_struct

The only usage of nouveau_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@...il.com>
---
 drivers/gpu/drm/nouveau/nouveau_ttm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_ttm.c b/drivers/gpu/drm/nouveau/nouveau_ttm.c
index 495288182c2d..b81ae90b8449 100644
--- a/drivers/gpu/drm/nouveau/nouveau_ttm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_ttm.c
@@ -154,7 +154,7 @@ static vm_fault_t nouveau_ttm_fault(struct vm_fault *vmf)
 	return ret;
 }
 
-static struct vm_operations_struct nouveau_ttm_vm_ops = {
+static const struct vm_operations_struct nouveau_ttm_vm_ops = {
 	.fault = nouveau_ttm_fault,
 	.open = ttm_bo_vm_open,
 	.close = ttm_bo_vm_close,
-- 
2.30.0