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Subject[PATCH 5/9] drm/i915/gvt: Constify gvt_mmio_block
Date
These are never modified, so make them const to allow the compiler to
put it in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
---
drivers/gpu/drm/i915/gvt/gvt.h | 2 +-
drivers/gpu/drm/i915/gvt/handlers.c | 12 ++++++------
2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/gvt/gvt.h b/drivers/gpu/drm/i915/gvt/gvt.h
index 0c0615602343..0ebffc327528 100644
--- a/drivers/gpu/drm/i915/gvt/gvt.h
+++ b/drivers/gpu/drm/i915/gvt/gvt.h
@@ -272,7 +272,7 @@ struct intel_gvt_mmio {
/* Value of command write of this reg needs to be patched */
#define F_CMD_WRITE_PATCH (1 << 8)

- struct gvt_mmio_block *mmio_block;
+ const struct gvt_mmio_block *mmio_block;
unsigned int num_mmio_block;

DECLARE_HASHTABLE(mmio_info_table, INTEL_GVT_MMIO_HASH_BITS);
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index cde0a477fb49..5e85a77da257 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -3627,11 +3627,11 @@ static int init_bxt_mmio_info(struct intel_gvt *gvt)
return 0;
}

-static struct gvt_mmio_block *find_mmio_block(struct intel_gvt *gvt,
- unsigned int offset)
+static const struct gvt_mmio_block *find_mmio_block(struct intel_gvt *gvt,
+ unsigned int offset)
{
unsigned long device = intel_gvt_get_device_type(gvt);
- struct gvt_mmio_block *block = gvt->mmio.mmio_block;
+ const struct gvt_mmio_block *block = gvt->mmio.mmio_block;
int num = gvt->mmio.num_mmio_block;
int i;

@@ -3670,7 +3670,7 @@ void intel_gvt_clean_mmio_info(struct intel_gvt *gvt)
* accessible (should have no F_CMD_ACCESS flag).
* otherwise, need to update cmd_reg_handler in cmd_parser.c
*/
-static struct gvt_mmio_block mmio_blocks[] = {
+static const struct gvt_mmio_block mmio_blocks[] = {
{D_SKL_PLUS, _MMIO(DMC_MMIO_START_RANGE), 0x3000, NULL, NULL},
{D_ALL, _MMIO(MCHBAR_MIRROR_BASE_SNB), 0x40000, NULL, NULL},
{D_ALL, _MMIO(VGT_PVINFO_PAGE), VGT_PVINFO_SIZE,
@@ -3753,7 +3753,7 @@ int intel_gvt_for_each_tracked_mmio(struct intel_gvt *gvt,
int (*handler)(struct intel_gvt *gvt, u32 offset, void *data),
void *data)
{
- struct gvt_mmio_block *block = gvt->mmio.mmio_block;
+ const struct gvt_mmio_block *block = gvt->mmio.mmio_block;
struct intel_gvt_mmio_info *e;
int i, j, ret;

@@ -3871,7 +3871,7 @@ int intel_vgpu_mmio_reg_rw(struct intel_vgpu *vgpu, unsigned int offset,
struct drm_i915_private *i915 = vgpu->gvt->gt->i915;
struct intel_gvt *gvt = vgpu->gvt;
struct intel_gvt_mmio_info *mmio_info;
- struct gvt_mmio_block *mmio_block;
+ const struct gvt_mmio_block *mmio_block;
gvt_mmio_func func;
int ret;

--
2.34.1
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