drm/i915/gvt: Constify intel_gvt_gtt_gma_ops

These are never modified, so make them const to allow the compiler to
put them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Zhi Wang <zhi.a.wang@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20211204105527.15741-2-rikard.falkeborn@gmail.com
Reviewed-by: Zhi Wang <zhi.a.wang@intel.com>

diff --git a/drivers/gpu/drm/i915/gvt/gtt.c b/drivers/gpu/drm/i915/gvt/gtt.c
index 53d0cb3..6efa487 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gtt.c
+++ b/drivers/gpu/drm/i915/gvt/gtt.c
@@ -516,7 +516,7 @@ static struct intel_gvt_gtt_pte_ops gen8_gtt_pte_ops = {
        .set_pfn = gen8_gtt_set_pfn,
 };
 
-static struct intel_gvt_gtt_gma_ops gen8_gtt_gma_ops = {
+static const struct intel_gvt_gtt_gma_ops gen8_gtt_gma_ops = {
        .gma_to_ggtt_pte_index = gma_to_ggtt_pte_index,
        .gma_to_pte_index = gen8_gma_to_pte_index,
        .gma_to_pde_index = gen8_gma_to_pde_index,
@@ -2097,7 +2097,7 @@ unsigned long intel_vgpu_gma_to_gpa(struct intel_vgpu_mm *mm, unsigned long gma)
        struct intel_vgpu *vgpu = mm->vgpu;
        struct intel_gvt *gvt = vgpu->gvt;
        struct intel_gvt_gtt_pte_ops *pte_ops = gvt->gtt.pte_ops;
-       struct intel_gvt_gtt_gma_ops *gma_ops = gvt->gtt.gma_ops;
+       const struct intel_gvt_gtt_gma_ops *gma_ops = gvt->gtt.gma_ops;
        unsigned long gpa = INTEL_GVT_INVALID_ADDR;
        unsigned long gma_index[4];
        struct intel_gvt_gtt_entry e;

diff --git a/drivers/gpu/drm/i915/gvt/gtt.h b/drivers/gpu/drm/i915/gvt/gtt.h
index 3bf4567..d0d5983 100644 (file)
--- a/drivers/gpu/drm/i915/gvt/gtt.h
+++ b/drivers/gpu/drm/i915/gvt/gtt.h
@@ -92,7 +92,7 @@ struct intel_gvt_gtt_gma_ops {
 
 struct intel_gvt_gtt {
        struct intel_gvt_gtt_pte_ops *pte_ops;
-       struct intel_gvt_gtt_gma_ops *gma_ops;
+       const struct intel_gvt_gtt_gma_ops *gma_ops;
        int (*mm_alloc_page_table)(struct intel_vgpu_mm *mm);
        void (*mm_free_page_table)(struct intel_vgpu_mm *mm);
        struct list_head oos_page_use_list_head;