The mode_valid() callbacks of drm_encoder, drm_crtc and drm_bridge
accept const struct drm_display_mode argument. Change the mode_valid
callback of drm_connector to also accept const argument.

Signed-off-by: Dmitry Baryshkov <dmitry.barysh...@linaro.org>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c           |  8 ++++----
 drivers/gpu/drm/amd/amdgpu/atombios_dp.c                 |  2 +-
 drivers/gpu/drm/amd/amdgpu/atombios_dp.h                 |  2 +-
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c        |  2 +-
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h        |  2 +-
 drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c |  2 +-
 drivers/gpu/drm/arm/malidp_mw.c                          |  2 +-
 drivers/gpu/drm/bridge/adv7511/adv7511_drv.c             |  2 +-
 drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c      |  2 +-
 drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c |  7 -------
 drivers/gpu/drm/drm_crtc_helper_internal.h               |  2 +-
 drivers/gpu/drm/drm_probe_helper.c                       |  2 +-
 drivers/gpu/drm/exynos/exynos_hdmi.c                     |  2 +-
 drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c                |  2 +-
 drivers/gpu/drm/gma500/cdv_intel_crt.c                   |  2 +-
 drivers/gpu/drm/gma500/cdv_intel_dp.c                    |  2 +-
 drivers/gpu/drm/gma500/cdv_intel_hdmi.c                  |  2 +-
 drivers/gpu/drm/gma500/cdv_intel_lvds.c                  |  2 +-
 drivers/gpu/drm/gma500/oaktrail_hdmi.c                   |  2 +-
 drivers/gpu/drm/gma500/psb_intel_drv.h                   |  2 +-
 drivers/gpu/drm/gma500/psb_intel_lvds.c                  |  2 +-
 drivers/gpu/drm/gma500/psb_intel_sdvo.c                  |  2 +-
 drivers/gpu/drm/i915/display/dvo_ch7017.c                |  2 +-
 drivers/gpu/drm/i915/display/dvo_ch7xxx.c                |  2 +-
 drivers/gpu/drm/i915/display/dvo_ivch.c                  |  2 +-
 drivers/gpu/drm/i915/display/dvo_ns2501.c                |  2 +-
 drivers/gpu/drm/i915/display/dvo_sil164.c                |  2 +-
 drivers/gpu/drm/i915/display/dvo_tfp410.c                |  2 +-
 drivers/gpu/drm/i915/display/icl_dsi.c                   |  2 +-
 drivers/gpu/drm/i915/display/intel_crt.c                 |  2 +-
 drivers/gpu/drm/i915/display/intel_dp.c                  |  2 +-
 drivers/gpu/drm/i915/display/intel_dsi.c                 |  2 +-
 drivers/gpu/drm/i915/display/intel_dsi.h                 |  2 +-
 drivers/gpu/drm/i915/display/intel_dvo.c                 |  2 +-
 drivers/gpu/drm/i915/display/intel_dvo_dev.h             |  2 +-
 drivers/gpu/drm/i915/display/intel_hdmi.c                |  2 +-
 drivers/gpu/drm/i915/display/intel_lvds.c                |  2 +-
 drivers/gpu/drm/i915/display/intel_sdvo.c                |  2 +-
 drivers/gpu/drm/i915/display/intel_tv.c                  |  2 +-
 drivers/gpu/drm/i915/display/vlv_dsi.c                   |  2 +-
 drivers/gpu/drm/imx/ipuv3/imx-tve.c                      |  2 +-
 drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c      |  2 +-
 drivers/gpu/drm/nouveau/dispnv50/disp.c                  |  2 +-
 drivers/gpu/drm/nouveau/nouveau_connector.c              |  2 +-
 drivers/gpu/drm/qxl/qxl_display.c                        |  2 +-
 drivers/gpu/drm/radeon/atombios_dp.c                     |  2 +-
 drivers/gpu/drm/radeon/radeon_connectors.c               | 10 +++++-----
 drivers/gpu/drm/radeon/radeon_mode.h                     |  2 +-
 drivers/gpu/drm/rockchip/cdn-dp-core.c                   |  2 +-
 drivers/gpu/drm/rockchip/inno_hdmi.c                     |  4 ++--
 drivers/gpu/drm/rockchip/rk3066_hdmi.c                   |  2 +-
 drivers/gpu/drm/sti/sti_dvo.c                            |  2 +-
 drivers/gpu/drm/sti/sti_hda.c                            |  2 +-
 drivers/gpu/drm/sti/sti_hdmi.c                           |  2 +-
 drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c                   |  2 +-
 drivers/gpu/drm/tegra/dsi.c                              |  2 +-
 drivers/gpu/drm/tegra/hdmi.c                             |  2 +-
 drivers/gpu/drm/tegra/sor.c                              |  2 +-
 drivers/gpu/drm/vc4/vc4_txp.c                            |  2 +-
 drivers/gpu/drm/virtio/virtgpu_display.c                 |  2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.c                      |  2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_kms.h                      |  2 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c                     |  2 +-
 include/drm/drm_modeset_helper_vtables.h                 |  2 +-
 64 files changed, 71 insertions(+), 78 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c 
b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
index 
344e0a9ee08a99a7e874e4ed31c28901b7ea25b0..5e375e9c4f5de3883797f06a0c4bea26bf3d1795
 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_connectors.c
@@ -674,7 +674,7 @@ static int amdgpu_connector_lvds_get_modes(struct 
drm_connector *connector)
 }
 
 static enum drm_mode_status amdgpu_connector_lvds_mode_valid(struct 
drm_connector *connector,
-                                            struct drm_display_mode *mode)
+                                            const struct drm_display_mode 
*mode)
 {
        struct drm_encoder *encoder = 
amdgpu_connector_best_single_encoder(connector);
 
@@ -839,7 +839,7 @@ static int amdgpu_connector_vga_get_modes(struct 
drm_connector *connector)
 }
 
 static enum drm_mode_status amdgpu_connector_vga_mode_valid(struct 
drm_connector *connector,
-                                           struct drm_display_mode *mode)
+                                           const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct amdgpu_device *adev = drm_to_adev(dev);
@@ -1196,7 +1196,7 @@ static void amdgpu_connector_dvi_force(struct 
drm_connector *connector)
 }
 
 static enum drm_mode_status amdgpu_connector_dvi_mode_valid(struct 
drm_connector *connector,
-                                           struct drm_display_mode *mode)
+                                           const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct amdgpu_device *adev = drm_to_adev(dev);
@@ -1464,7 +1464,7 @@ amdgpu_connector_dp_detect(struct drm_connector 
*connector, bool force)
 }
 
 static enum drm_mode_status amdgpu_connector_dp_mode_valid(struct 
drm_connector *connector,
-                                          struct drm_display_mode *mode)
+                                          const struct drm_display_mode *mode)
 {
        struct amdgpu_connector *amdgpu_connector = 
to_amdgpu_connector(connector);
        struct amdgpu_connector_atom_dig *amdgpu_dig_connector = 
amdgpu_connector->con_priv;
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c 
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
index 
622634c08c7b56dce527b37c2d8b479abc58420c..521b9faab18059ed92ebb1dc9a9847e8426e7403
 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.c
@@ -430,7 +430,7 @@ void amdgpu_atombios_dp_set_link_config(struct 
drm_connector *connector,
 }
 
 int amdgpu_atombios_dp_mode_valid_helper(struct drm_connector *connector,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
        struct amdgpu_connector *amdgpu_connector = 
to_amdgpu_connector(connector);
        struct amdgpu_connector_atom_dig *dig_connector;
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_dp.h 
b/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
index 
f59d85eaddf022d5b227e33bc8d3af418781f6d6..3e24acf8133f3a7f2d86f07048b1a8c67a4a8263
 100644
--- a/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
+++ b/drivers/gpu/drm/amd/amdgpu/atombios_dp.h
@@ -32,7 +32,7 @@ int amdgpu_atombios_dp_get_panel_mode(struct drm_encoder 
*encoder,
 void amdgpu_atombios_dp_set_link_config(struct drm_connector *connector,
                                 const struct drm_display_mode *mode);
 int amdgpu_atombios_dp_mode_valid_helper(struct drm_connector *connector,
-                                 struct drm_display_mode *mode);
+                                 const struct drm_display_mode *mode);
 bool amdgpu_atombios_dp_needs_link_train(struct amdgpu_connector 
*amdgpu_connector);
 void amdgpu_atombios_dp_set_rx_power_state(struct drm_connector *connector,
                                    u8 power_state);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 
d0ca905e91eafe6c53f3f2ebdf3f2ae9589d7f89..260426ba680c9e8120edfe36a28e6e6c34cd9a3a
 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -7377,7 +7377,7 @@ create_validate_stream_for_sink(struct 
amdgpu_dm_connector *aconnector,
 }
 
 enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector 
*connector,
-                                  struct drm_display_mode *mode)
+                                  const struct drm_display_mode *mode)
 {
        int result = MODE_ERROR;
        struct dc_sink *dc_sink;
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h 
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 
25e95775c45c10ec1fb72f062204109d3b2e5efa..32856b848052efba0b26e257cc823ceae8c066c8
 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -945,7 +945,7 @@ void amdgpu_dm_connector_init_helper(struct 
amdgpu_display_manager *dm,
                                     int link_index);
 
 enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector 
*connector,
-                                  struct drm_display_mode *mode);
+                                  const struct drm_display_mode *mode);
 
 void dm_restore_drm_connector_state(struct drm_device *dev,
                                    struct drm_connector *connector);
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c 
b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
index 
ebccb74306a765d524401c5fbbad32439366fbcb..e075a6b317cc23122238a79b1eb62f68a5074e81
 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_wb_connector.c
@@ -88,7 +88,7 @@ komeda_wb_connector_get_modes(struct drm_connector *connector)
 
 static enum drm_mode_status
 komeda_wb_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct drm_mode_config *mode_config = &dev->mode_config;
diff --git a/drivers/gpu/drm/arm/malidp_mw.c b/drivers/gpu/drm/arm/malidp_mw.c
index 
2577f0cef8fcda497efa91ed5dbce9c2a40587c7..600af5ad81b15d0c30f9f79588f40cca07437ed8
 100644
--- a/drivers/gpu/drm/arm/malidp_mw.c
+++ b/drivers/gpu/drm/arm/malidp_mw.c
@@ -43,7 +43,7 @@ static int malidp_mw_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 malidp_mw_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct drm_mode_config *mode_config = &dev->mode_config;
diff --git a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c 
b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
index 
eb5919b382635e5e0b8fb70bcc2cc6de1a059187..fda66e7876b86f6dfc1ed0f781cd9c184e380090
 100644
--- a/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
+++ b/drivers/gpu/drm/bridge/adv7511/adv7511_drv.c
@@ -847,7 +847,7 @@ static int adv7511_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 adv7511_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        struct adv7511 *adv = connector_to_adv7511(connector);
 
diff --git a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c 
b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
index 
41f72d458487fb27a34f2fa475c51de55725bc23..3b9e265e874719a3a8d21ea735bd7a877b47c7a7
 100644
--- a/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
+++ b/drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c
@@ -1619,7 +1619,7 @@ bool cdns_mhdp_bandwidth_ok(struct cdns_mhdp_device *mhdp,
 
 static
 enum drm_mode_status cdns_mhdp_mode_valid(struct drm_connector *conn,
-                                         struct drm_display_mode *mode)
+                                         const struct drm_display_mode *mode)
 {
        struct cdns_mhdp_device *mhdp = connector_to_mhdp(conn);
 
diff --git a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c 
b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
index 
37f1acf5c0f83ded2fb3d83150dc05cb6cfd2432..3760ccfe54d0826053eb899c5b14f9c8026702a2
 100644
--- a/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
+++ b/drivers/gpu/drm/bridge/megachips-stdpxxxx-ge-b850v3-fw.c
@@ -115,16 +115,9 @@ static int ge_b850v3_lvds_get_modes(struct drm_connector 
*connector)
        return num_modes;
 }
 
-static enum drm_mode_status ge_b850v3_lvds_mode_valid(
-               struct drm_connector *connector, struct drm_display_mode *mode)
-{
-       return MODE_OK;
-}
-
 static const struct
 drm_connector_helper_funcs ge_b850v3_lvds_connector_helper_funcs = {
        .get_modes = ge_b850v3_lvds_get_modes,
-       .mode_valid = ge_b850v3_lvds_mode_valid,
 };
 
 static enum drm_connector_status ge_b850v3_lvds_bridge_detect(struct 
drm_bridge *bridge)
diff --git a/drivers/gpu/drm/drm_crtc_helper_internal.h 
b/drivers/gpu/drm/drm_crtc_helper_internal.h
index 
8059f65c5d6c46014a3b510069730c6ac079f7bc..bae73936acf9bae97acb0d4f9554f963303907ca
 100644
--- a/drivers/gpu/drm/drm_crtc_helper_internal.h
+++ b/drivers/gpu/drm/drm_crtc_helper_internal.h
@@ -43,7 +43,7 @@ enum drm_mode_status drm_encoder_mode_valid(struct 
drm_encoder *encoder,
                                            const struct drm_display_mode 
*mode);
 int
 drm_connector_mode_valid(struct drm_connector *connector,
-                        struct drm_display_mode *mode,
+                        const struct drm_display_mode *mode,
                         struct drm_modeset_acquire_ctx *ctx,
                         enum drm_mode_status *status);
 
diff --git a/drivers/gpu/drm/drm_probe_helper.c 
b/drivers/gpu/drm/drm_probe_helper.c
index 
96b266b37ba49539dfc9b1af13b5e803526ee40a..080b552006141489d8d3fd985f737714820aa3a6
 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -202,7 +202,7 @@ enum drm_mode_status drm_encoder_mode_valid(struct 
drm_encoder *encoder,
 
 int
 drm_connector_mode_valid(struct drm_connector *connector,
-                        struct drm_display_mode *mode,
+                        const struct drm_display_mode *mode,
                         struct drm_modeset_acquire_ctx *ctx,
                         enum drm_mode_status *status)
 {
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c 
b/drivers/gpu/drm/exynos/exynos_hdmi.c
index 
c9d4b9146df95bb46cb6bea4849c331616c2b463..683409f7abafa9ee95b25d37f74724de2477a4c1
 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -931,7 +931,7 @@ static int hdmi_find_phy_conf(struct hdmi_context *hdata, 
u32 pixel_clock)
 }
 
 static enum drm_mode_status hdmi_mode_valid(struct drm_connector *connector,
-                                           struct drm_display_mode *mode)
+                                           const struct drm_display_mode *mode)
 {
        struct hdmi_context *hdata = connector_to_hdmi(connector);
        int ret;
diff --git a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c 
b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
index 
2c2b92324a2e90fe13dcfa889986f00419c4be60..048b747d6871400ffa748458762b0721a5c1cad6
 100644
--- a/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
+++ b/drivers/gpu/drm/fsl-dcu/fsl_dcu_drm_rgb.c
@@ -62,7 +62,7 @@ static int fsl_dcu_drm_connector_get_modes(struct 
drm_connector *connector)
 
 static enum drm_mode_status
 fsl_dcu_drm_connector_mode_valid(struct drm_connector *connector,
-                                struct drm_display_mode *mode)
+                                const struct drm_display_mode *mode)
 {
        if (mode->hdisplay & 0xf)
                return MODE_ERROR;
diff --git a/drivers/gpu/drm/gma500/cdv_intel_crt.c 
b/drivers/gpu/drm/gma500/cdv_intel_crt.c
index 
5a0acd914f769a970f3be12176dfd0bcbd8cee17..06fe7480e7afd1d67ee2be45b872604830913aff
 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_crt.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_crt.c
@@ -69,7 +69,7 @@ static void cdv_intel_crt_dpms(struct drm_encoder *encoder, 
int mode)
 }
 
 static enum drm_mode_status cdv_intel_crt_mode_valid(struct drm_connector 
*connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
                return MODE_NO_DBLESCAN;
diff --git a/drivers/gpu/drm/gma500/cdv_intel_dp.c 
b/drivers/gpu/drm/gma500/cdv_intel_dp.c
index 
cc2ed9b3fd2d22aa9d02983cf7059823f80ef366..53990d27c39faca906e960f4ad5a9e614c002990
 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_dp.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_dp.c
@@ -505,7 +505,7 @@ static void cdv_intel_edp_backlight_off (struct gma_encoder 
*intel_encoder)
 
 static enum drm_mode_status
 cdv_intel_dp_mode_valid(struct drm_connector *connector,
-                   struct drm_display_mode *mode)
+                   const struct drm_display_mode *mode)
 {
        struct gma_encoder *encoder = gma_attached_encoder(connector);
        struct cdv_intel_dp *intel_dp = encoder->dev_priv;
diff --git a/drivers/gpu/drm/gma500/cdv_intel_hdmi.c 
b/drivers/gpu/drm/gma500/cdv_intel_hdmi.c
index 
2d95e04712911afcb2a1c03ce88428daf71dbb74..f2a3e37ef63289876182821f688348e05b7e224e
 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_hdmi.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_hdmi.c
@@ -222,7 +222,7 @@ static int cdv_hdmi_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status cdv_hdmi_mode_valid(struct drm_connector 
*connector,
-                                struct drm_display_mode *mode)
+                                const struct drm_display_mode *mode)
 {
        if (mode->clock > 165000)
                return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/gma500/cdv_intel_lvds.c 
b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
index 
f3a4517bdf27cef18041d2c533bc3543a0cc371e..9276e3676ba0503e4ed50e67efd51c6fc2311669
 100644
--- a/drivers/gpu/drm/gma500/cdv_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/cdv_intel_lvds.c
@@ -153,7 +153,7 @@ static void cdv_intel_lvds_restore(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status cdv_intel_lvds_mode_valid(struct drm_connector 
*connector,
-                             struct drm_display_mode *mode)
+                             const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct drm_psb_private *dev_priv = to_drm_psb_private(dev);
diff --git a/drivers/gpu/drm/gma500/oaktrail_hdmi.c 
b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
index 
ed8626c73541c13b1c04da26c096cf94f80524a6..1cf3943691277660d1d376a1894a5523362f0808
 100644
--- a/drivers/gpu/drm/gma500/oaktrail_hdmi.c
+++ b/drivers/gpu/drm/gma500/oaktrail_hdmi.c
@@ -514,7 +514,7 @@ static void oaktrail_hdmi_dpms(struct drm_encoder *encoder, 
int mode)
 }
 
 static enum drm_mode_status oaktrail_hdmi_mode_valid(struct drm_connector 
*connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        if (mode->clock > 165000)
                return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/gma500/psb_intel_drv.h 
b/drivers/gpu/drm/gma500/psb_intel_drv.h
index 
2499fd6a80c9d81541a0a137e85fd5e974c7b021..9dc9dcd1b09f79b3e7a7d1c28e48afd82cd60da3
 100644
--- a/drivers/gpu/drm/gma500/psb_intel_drv.h
+++ b/drivers/gpu/drm/gma500/psb_intel_drv.h
@@ -212,7 +212,7 @@ extern bool psb_intel_lvds_mode_fixup(struct drm_encoder 
*encoder,
                                      const struct drm_display_mode *mode,
                                      struct drm_display_mode *adjusted_mode);
 extern enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector 
*connector,
-                                    struct drm_display_mode *mode);
+                                    const struct drm_display_mode *mode);
 extern int psb_intel_lvds_set_property(struct drm_connector *connector,
                                        struct drm_property *property,
                                        uint64_t value);
diff --git a/drivers/gpu/drm/gma500/psb_intel_lvds.c 
b/drivers/gpu/drm/gma500/psb_intel_lvds.c
index 
138f153d38ba354b2632eb39f559e1dad003ebf8..9ad611b5956eb4a289f7ba7f86ee94c0068ef5f1
 100644
--- a/drivers/gpu/drm/gma500/psb_intel_lvds.c
+++ b/drivers/gpu/drm/gma500/psb_intel_lvds.c
@@ -331,7 +331,7 @@ static void psb_intel_lvds_restore(struct drm_connector 
*connector)
 }
 
 enum drm_mode_status psb_intel_lvds_mode_valid(struct drm_connector *connector,
-                                struct drm_display_mode *mode)
+                                const struct drm_display_mode *mode)
 {
        struct drm_psb_private *dev_priv = to_drm_psb_private(connector->dev);
        struct gma_encoder *gma_encoder = gma_attached_encoder(connector);
diff --git a/drivers/gpu/drm/gma500/psb_intel_sdvo.c 
b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
index 
8dafff963ca8bc169706c283fa1504958d69a72e..afda40fc449470b1ba3244b3d236db12ee61d452
 100644
--- a/drivers/gpu/drm/gma500/psb_intel_sdvo.c
+++ b/drivers/gpu/drm/gma500/psb_intel_sdvo.c
@@ -1159,7 +1159,7 @@ static void psb_intel_sdvo_dpms(struct drm_encoder 
*encoder, int mode)
 }
 
 static enum drm_mode_status psb_intel_sdvo_mode_valid(struct drm_connector 
*connector,
-                                struct drm_display_mode *mode)
+                                const struct drm_display_mode *mode)
 {
        struct psb_intel_sdvo *psb_intel_sdvo = intel_attached_sdvo(connector);
 
diff --git a/drivers/gpu/drm/i915/display/dvo_ch7017.c 
b/drivers/gpu/drm/i915/display/dvo_ch7017.c
index 
493e730c685b80055ad81a615a4a36d30d00cd17..206818f9ad49e6a6876d4e179f34ce7d8369fd06
 100644
--- a/drivers/gpu/drm/i915/display/dvo_ch7017.c
+++ b/drivers/gpu/drm/i915/display/dvo_ch7017.c
@@ -247,7 +247,7 @@ static enum drm_connector_status ch7017_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status ch7017_mode_valid(struct intel_dvo_device *dvo,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        if (mode->clock > 160000)
                return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/i915/display/dvo_ch7xxx.c 
b/drivers/gpu/drm/i915/display/dvo_ch7xxx.c
index 
534b8544e0a41ddd5761610f63f890d6d42ac6bd..10ab3cc73e586492aa7bc0d767d7fcd57f72db25
 100644
--- a/drivers/gpu/drm/i915/display/dvo_ch7xxx.c
+++ b/drivers/gpu/drm/i915/display/dvo_ch7xxx.c
@@ -276,7 +276,7 @@ static enum drm_connector_status ch7xxx_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status ch7xxx_mode_valid(struct intel_dvo_device *dvo,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        if (mode->clock > 165000)
                return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/i915/display/dvo_ivch.c 
b/drivers/gpu/drm/i915/display/dvo_ivch.c
index 
0d5cce6051b1b8451a6da38e54da5e1cd6cd7eaf..d9c3152d4338fbf3ba97ac69c3bd11a285c10c4e
 100644
--- a/drivers/gpu/drm/i915/display/dvo_ivch.c
+++ b/drivers/gpu/drm/i915/display/dvo_ivch.c
@@ -314,7 +314,7 @@ static enum drm_connector_status ivch_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status ivch_mode_valid(struct intel_dvo_device *dvo,
-                                           struct drm_display_mode *mode)
+                                           const struct drm_display_mode *mode)
 {
        if (mode->clock > 112000)
                return MODE_CLOCK_HIGH;
diff --git a/drivers/gpu/drm/i915/display/dvo_ns2501.c 
b/drivers/gpu/drm/i915/display/dvo_ns2501.c
index 
9d47f8a93e94b5da3dd7afaa9cd268c8b1260751..cb619ffc974f28c2ed931e8ace2cda1eab6c84c7
 100644
--- a/drivers/gpu/drm/i915/display/dvo_ns2501.c
+++ b/drivers/gpu/drm/i915/display/dvo_ns2501.c
@@ -524,7 +524,7 @@ static enum drm_connector_status ns2501_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status ns2501_mode_valid(struct intel_dvo_device *dvo,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        DRM_DEBUG_KMS
            ("is mode valid (hdisplay=%d,htotal=%d,vdisplay=%d,vtotal=%d)\n",
diff --git a/drivers/gpu/drm/i915/display/dvo_sil164.c 
b/drivers/gpu/drm/i915/display/dvo_sil164.c
index 
a8dd40c0099703484b3ed6154fa9df948c5f9128..b42c717085f316a1e887340a36b5bd6090099789
 100644
--- a/drivers/gpu/drm/i915/display/dvo_sil164.c
+++ b/drivers/gpu/drm/i915/display/dvo_sil164.c
@@ -189,7 +189,7 @@ static enum drm_connector_status sil164_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status sil164_mode_valid(struct intel_dvo_device *dvo,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        return MODE_OK;
 }
diff --git a/drivers/gpu/drm/i915/display/dvo_tfp410.c 
b/drivers/gpu/drm/i915/display/dvo_tfp410.c
index 
d9a0cd753a878db8fda9fb537dd8f7ca4036c7e8..280699438526790b76f0bbf7a5d73aa109546558
 100644
--- a/drivers/gpu/drm/i915/display/dvo_tfp410.c
+++ b/drivers/gpu/drm/i915/display/dvo_tfp410.c
@@ -217,7 +217,7 @@ static enum drm_connector_status tfp410_detect(struct 
intel_dvo_device *dvo)
 }
 
 static enum drm_mode_status tfp410_mode_valid(struct intel_dvo_device *dvo,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        return MODE_OK;
 }
diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c 
b/drivers/gpu/drm/i915/display/icl_dsi.c
index 
87a27d91d15dc9e28fe95548942a17a5ad1bb0b4..644efaa89c855beae30abb7b9a78c5d167dab27b
 100644
--- a/drivers/gpu/drm/i915/display/icl_dsi.c
+++ b/drivers/gpu/drm/i915/display/icl_dsi.c
@@ -1451,7 +1451,7 @@ static void gen11_dsi_post_disable(struct 
intel_atomic_state *state,
 }
 
 static enum drm_mode_status gen11_dsi_mode_valid(struct drm_connector 
*connector,
-                                                struct drm_display_mode *mode)
+                                                const struct drm_display_mode 
*mode)
 {
        struct drm_i915_private *i915 = to_i915(connector->dev);
        enum drm_mode_status status;
diff --git a/drivers/gpu/drm/i915/display/intel_crt.c 
b/drivers/gpu/drm/i915/display/intel_crt.c
index 
fd78adbaadbe82ae7dbaaee1f4a1175ede81932d..2cda689a8f4f5a677aade0ac6b705be9ca62bf64
 100644
--- a/drivers/gpu/drm/i915/display/intel_crt.c
+++ b/drivers/gpu/drm/i915/display/intel_crt.c
@@ -344,7 +344,7 @@ static void intel_enable_crt(struct intel_atomic_state 
*state,
 
 static enum drm_mode_status
 intel_crt_mode_valid(struct drm_connector *connector,
-                    struct drm_display_mode *mode)
+                    const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct drm_i915_private *dev_priv = to_i915(dev);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c 
b/drivers/gpu/drm/i915/display/intel_dp.c
index 
fbb096be02ade5e4bb36e65f197705d90dfa8a55..66ec69ee73b370d67d1da21b71f42fa326dcfa15
 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -1366,7 +1366,7 @@ bool intel_dp_has_dsc(const struct intel_connector 
*connector)
 
 static enum drm_mode_status
 intel_dp_mode_valid(struct drm_connector *_connector,
-                   struct drm_display_mode *mode)
+                   const struct drm_display_mode *mode)
 {
        struct intel_connector *connector = to_intel_connector(_connector);
        struct intel_dp *intel_dp = intel_attached_dp(connector);
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.c 
b/drivers/gpu/drm/i915/display/intel_dsi.c
index 
0be46c6c9611f7c386a052ad8b79f4924727b892..c93a3cf75c52cc2bf2f4ba85b0cdef9e3a8ebd76
 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi.c
+++ b/drivers/gpu/drm/i915/display/intel_dsi.c
@@ -58,7 +58,7 @@ int intel_dsi_get_modes(struct drm_connector *connector)
 }
 
 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
-                                         struct drm_display_mode *mode)
+                                         const struct drm_display_mode *mode)
 {
        struct drm_i915_private *dev_priv = to_i915(connector->dev);
        struct intel_connector *intel_connector = to_intel_connector(connector);
diff --git a/drivers/gpu/drm/i915/display/intel_dsi.h 
b/drivers/gpu/drm/i915/display/intel_dsi.h
index 
e8ba4ccd99d3c76e220415a3bb638c87689f6dca..89c7166a3860bb76b19e0afac1ce047f70cc0630
 100644
--- a/drivers/gpu/drm/i915/display/intel_dsi.h
+++ b/drivers/gpu/drm/i915/display/intel_dsi.h
@@ -165,7 +165,7 @@ enum drm_panel_orientation
 intel_dsi_get_panel_orientation(struct intel_connector *connector);
 int intel_dsi_get_modes(struct drm_connector *connector);
 enum drm_mode_status intel_dsi_mode_valid(struct drm_connector *connector,
-                                         struct drm_display_mode *mode);
+                                         const struct drm_display_mode *mode);
 struct intel_dsi_host *intel_dsi_host_init(struct intel_dsi *intel_dsi,
                                           const struct mipi_dsi_host_ops 
*funcs,
                                           enum port port);
diff --git a/drivers/gpu/drm/i915/display/intel_dvo.c 
b/drivers/gpu/drm/i915/display/intel_dvo.c
index 
9508ceae0d846c3a8255653b38ebbcb5dc4bc233..2ecbad6f41a5ad64f7aa7fab50cbf20eda4efde2
 100644
--- a/drivers/gpu/drm/i915/display/intel_dvo.c
+++ b/drivers/gpu/drm/i915/display/intel_dvo.c
@@ -217,7 +217,7 @@ static void intel_enable_dvo(struct intel_atomic_state 
*state,
 
 static enum drm_mode_status
 intel_dvo_mode_valid(struct drm_connector *_connector,
-                    struct drm_display_mode *mode)
+                    const struct drm_display_mode *mode)
 {
        struct intel_connector *connector = to_intel_connector(_connector);
        struct drm_i915_private *i915 = to_i915(connector->base.dev);
diff --git a/drivers/gpu/drm/i915/display/intel_dvo_dev.h 
b/drivers/gpu/drm/i915/display/intel_dvo_dev.h
index 
4bf476656b8cd2eb6c401fbc2101006c0927df24..d20667870e50f00356b5c1cf6f87c481916d23f0
 100644
--- a/drivers/gpu/drm/i915/display/intel_dvo_dev.h
+++ b/drivers/gpu/drm/i915/display/intel_dvo_dev.h
@@ -71,7 +71,7 @@ struct intel_dvo_dev_ops {
         * \return MODE_OK if the mode is valid, or another MODE_* otherwise.
         */
        enum drm_mode_status (*mode_valid)(struct intel_dvo_device *dvo,
-                                          struct drm_display_mode *mode);
+                                          const struct drm_display_mode *mode);
 
        /*
         * Callback for setting up a video mode after fixups have been made.
diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c 
b/drivers/gpu/drm/i915/display/intel_hdmi.c
index 
72ac910bf6ec4baf440e24d91e43b2217e67451e..848aebaa6b08bbb8b1defaede7aa5ae98a2c35f3
 100644
--- a/drivers/gpu/drm/i915/display/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/display/intel_hdmi.c
@@ -2000,7 +2000,7 @@ intel_hdmi_mode_clock_valid(struct drm_connector 
*connector, int clock,
 
 static enum drm_mode_status
 intel_hdmi_mode_valid(struct drm_connector *connector,
-                     struct drm_display_mode *mode)
+                     const struct drm_display_mode *mode)
 {
        struct intel_display *display = to_intel_display(connector->dev);
        struct intel_hdmi *hdmi = 
intel_attached_hdmi(to_intel_connector(connector));
diff --git a/drivers/gpu/drm/i915/display/intel_lvds.c 
b/drivers/gpu/drm/i915/display/intel_lvds.c
index 
5f753ee743c610cd2408fcc926a3cda178ef4c00..6928ae41a36f359cf920df284b128ade7e653368
 100644
--- a/drivers/gpu/drm/i915/display/intel_lvds.c
+++ b/drivers/gpu/drm/i915/display/intel_lvds.c
@@ -388,7 +388,7 @@ static void intel_lvds_shutdown(struct intel_encoder 
*encoder)
 
 static enum drm_mode_status
 intel_lvds_mode_valid(struct drm_connector *_connector,
-                     struct drm_display_mode *mode)
+                     const struct drm_display_mode *mode)
 {
        struct intel_connector *connector = to_intel_connector(_connector);
        struct drm_i915_private *i915 = to_i915(connector->base.dev);
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c 
b/drivers/gpu/drm/i915/display/intel_sdvo.c
index 
b83bf813677d53194af97dcbccaf10bd00fa0147..03a3b83c5dbac9c4b7a458b65c066072e856b08f
 100644
--- a/drivers/gpu/drm/i915/display/intel_sdvo.c
+++ b/drivers/gpu/drm/i915/display/intel_sdvo.c
@@ -1938,7 +1938,7 @@ static void intel_enable_sdvo(struct intel_atomic_state 
*state,
 
 static enum drm_mode_status
 intel_sdvo_mode_valid(struct drm_connector *connector,
-                     struct drm_display_mode *mode)
+                     const struct drm_display_mode *mode)
 {
        struct drm_i915_private *i915 = to_i915(connector->dev);
        struct intel_sdvo *intel_sdvo = 
intel_attached_sdvo(to_intel_connector(connector));
diff --git a/drivers/gpu/drm/i915/display/intel_tv.c 
b/drivers/gpu/drm/i915/display/intel_tv.c
index 
e40aff490486336c8f7399c9e81795aff40b5e40..104a928b8249064bd77fe65f81c1332254656d21
 100644
--- a/drivers/gpu/drm/i915/display/intel_tv.c
+++ b/drivers/gpu/drm/i915/display/intel_tv.c
@@ -957,7 +957,7 @@ static const struct tv_mode *intel_tv_mode_find(const 
struct drm_connector_state
 
 static enum drm_mode_status
 intel_tv_mode_valid(struct drm_connector *connector,
-                   struct drm_display_mode *mode)
+                   const struct drm_display_mode *mode)
 {
        struct intel_display *display = to_intel_display(connector->dev);
        struct drm_i915_private *i915 = to_i915(connector->dev);
diff --git a/drivers/gpu/drm/i915/display/vlv_dsi.c 
b/drivers/gpu/drm/i915/display/vlv_dsi.c
index 
32d15bd9a358350694503cee5f4c0632c4d6cd6e..3a9332f2c91300183709e14286e509d7a8d22f55
 100644
--- a/drivers/gpu/drm/i915/display/vlv_dsi.c
+++ b/drivers/gpu/drm/i915/display/vlv_dsi.c
@@ -1541,7 +1541,7 @@ static const struct drm_encoder_funcs intel_dsi_funcs = {
 };
 
 static enum drm_mode_status vlv_dsi_mode_valid(struct drm_connector *connector,
-                                              struct drm_display_mode *mode)
+                                              const struct drm_display_mode 
*mode)
 {
        struct drm_i915_private *i915 = to_i915(connector->dev);
 
diff --git a/drivers/gpu/drm/imx/ipuv3/imx-tve.c 
b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
index 
d46d07d25f51795b1a569adafb51b9896e0b77d4..bdebd11cb7b1f534ac9f5a6613ded195c789e132
 100644
--- a/drivers/gpu/drm/imx/ipuv3/imx-tve.c
+++ b/drivers/gpu/drm/imx/ipuv3/imx-tve.c
@@ -217,7 +217,7 @@ static int imx_tve_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 imx_tve_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        struct imx_tve *tve = con_to_tve(connector);
        unsigned long rate;
diff --git a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c 
b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
index 
7444b75c4215794f544553d7dee552718dad947d..52e728181b523cc3380d7718b5956e7e2dbd4cad
 100644
--- a/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
+++ b/drivers/gpu/drm/msm/disp/mdp4/mdp4_lvds_connector.c
@@ -58,7 +58,7 @@ static int mdp4_lvds_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 mdp4_lvds_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        struct mdp4_lvds_connector *mdp4_lvds_connector =
                        to_mdp4_lvds_connector(connector);
diff --git a/drivers/gpu/drm/nouveau/dispnv50/disp.c 
b/drivers/gpu/drm/nouveau/dispnv50/disp.c
index 
eed579a6c858b658e0ce4c90670c057bd05d27e4..ad88041a1c75e1bc4872b64c219d375a47deda74
 100644
--- a/drivers/gpu/drm/nouveau/dispnv50/disp.c
+++ b/drivers/gpu/drm/nouveau/dispnv50/disp.c
@@ -1142,7 +1142,7 @@ nv50_mstc_atomic_best_encoder(struct drm_connector 
*connector,
 
 static enum drm_mode_status
 nv50_mstc_mode_valid(struct drm_connector *connector,
-                    struct drm_display_mode *mode)
+                    const struct drm_display_mode *mode)
 {
        struct nv50_mstc *mstc = nv50_mstc(connector);
        struct nouveau_encoder *outp = mstc->mstm->outp;
diff --git a/drivers/gpu/drm/nouveau/nouveau_connector.c 
b/drivers/gpu/drm/nouveau/nouveau_connector.c
index 
8d5c9c74cbb90927036cee75f173f687617f14ec..2d26784bde74c0909ad69af61166821a7f3c114d
 100644
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c
+++ b/drivers/gpu/drm/nouveau/nouveau_connector.c
@@ -1074,7 +1074,7 @@ get_tmds_link_bandwidth(struct drm_connector *connector)
 
 static enum drm_mode_status
 nouveau_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        struct nouveau_connector *nv_connector = nouveau_connector(connector);
        struct nouveau_encoder *nv_encoder = nv_connector->detected_encoder;
diff --git a/drivers/gpu/drm/qxl/qxl_display.c 
b/drivers/gpu/drm/qxl/qxl_display.c
index 
bc24af08dfcd559e77e0e48aef140b714a992976..70aff64ced87a09fd6f678ad9d794e875d2c8353
 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -1044,7 +1044,7 @@ static int qxl_conn_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status qxl_conn_mode_valid(struct drm_connector 
*connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        struct drm_device *ddev = connector->dev;
        struct qxl_device *qdev = to_qxl(ddev);
diff --git a/drivers/gpu/drm/radeon/atombios_dp.c 
b/drivers/gpu/drm/radeon/atombios_dp.c
index 
6328627b7c342cefb2f0b2c3aafcb688f2db4482..fa78824931cc428b1f9e23fe8f98867136ef9883
 100644
--- a/drivers/gpu/drm/radeon/atombios_dp.c
+++ b/drivers/gpu/drm/radeon/atombios_dp.c
@@ -467,7 +467,7 @@ void radeon_dp_set_link_config(struct drm_connector 
*connector,
 }
 
 int radeon_dp_mode_valid_helper(struct drm_connector *connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        struct radeon_connector *radeon_connector = 
to_radeon_connector(connector);
        struct radeon_connector_atom_dig *dig_connector;
diff --git a/drivers/gpu/drm/radeon/radeon_connectors.c 
b/drivers/gpu/drm/radeon/radeon_connectors.c
index 
f9c73c55f04f76ed5c78e9169004f8a7dea6004e..3ec58df0f534afcad09a161fe643bd47c3ca1c7a
 100644
--- a/drivers/gpu/drm/radeon/radeon_connectors.c
+++ b/drivers/gpu/drm/radeon/radeon_connectors.c
@@ -806,7 +806,7 @@ static int radeon_lvds_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status radeon_lvds_mode_valid(struct drm_connector 
*connector,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
        struct drm_encoder *encoder = radeon_best_single_encoder(connector);
 
@@ -968,7 +968,7 @@ static int radeon_vga_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status radeon_vga_mode_valid(struct drm_connector 
*connector,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct radeon_device *rdev = dev->dev_private;
@@ -1116,7 +1116,7 @@ static int radeon_tv_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status radeon_tv_mode_valid(struct drm_connector 
*connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        if ((mode->hdisplay > 1024) || (mode->vdisplay > 768))
                return MODE_CLOCK_RANGE;
@@ -1457,7 +1457,7 @@ static void radeon_dvi_force(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status radeon_dvi_mode_valid(struct drm_connector 
*connector,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct radeon_device *rdev = dev->dev_private;
@@ -1733,7 +1733,7 @@ radeon_dp_detect(struct drm_connector *connector, bool 
force)
 }
 
 static enum drm_mode_status radeon_dp_mode_valid(struct drm_connector 
*connector,
-                                 struct drm_display_mode *mode)
+                                 const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct radeon_device *rdev = dev->dev_private;
diff --git a/drivers/gpu/drm/radeon/radeon_mode.h 
b/drivers/gpu/drm/radeon/radeon_mode.h
index 
4063d3801e819ba2726b63225e5f3f7d85eb760f..3102f6c2d0556210c10feff93f2a7103b10beea4
 100644
--- a/drivers/gpu/drm/radeon/radeon_mode.h
+++ b/drivers/gpu/drm/radeon/radeon_mode.h
@@ -706,7 +706,7 @@ extern int radeon_get_monitor_bpc(struct drm_connector 
*connector);
 
 extern void radeon_connector_hotplug(struct drm_connector *connector);
 extern int radeon_dp_mode_valid_helper(struct drm_connector *connector,
-                                      struct drm_display_mode *mode);
+                                      const struct drm_display_mode *mode);
 extern void radeon_dp_set_link_config(struct drm_connector *connector,
                                      const struct drm_display_mode *mode);
 extern void radeon_dp_link_train(struct drm_encoder *encoder,
diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c 
b/drivers/gpu/drm/rockchip/cdn-dp-core.c
index 
f576b1aa86d1434d75b3770e08d91537aca4f5c4..573b84dbea49bb1071bb704560424ed8fad524ea
 100644
--- a/drivers/gpu/drm/rockchip/cdn-dp-core.c
+++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
@@ -275,7 +275,7 @@ static int cdn_dp_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 cdn_dp_connector_mode_valid(struct drm_connector *connector,
-                           struct drm_display_mode *mode)
+                           const struct drm_display_mode *mode)
 {
        struct cdn_dp_device *dp = connector_to_dp(connector);
        struct drm_display_info *display_info = &dp->connector.display_info;
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c 
b/drivers/gpu/drm/rockchip/inno_hdmi.c
index 
42ef62aa0a1e078d4b1db93eb20c7cc21054df28..a43cd7953bceb3ad8b179bf1cb952c601988018e
 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -471,7 +471,7 @@ static int inno_hdmi_setup(struct inno_hdmi *hdmi,
 }
 
 static enum drm_mode_status inno_hdmi_display_mode_valid(struct inno_hdmi 
*hdmi,
-                                                        struct 
drm_display_mode *mode)
+                                                        const struct 
drm_display_mode *mode)
 {
        unsigned long mpixelclk, max_tolerance;
        long rounded_refclk;
@@ -577,7 +577,7 @@ static int inno_hdmi_connector_get_modes(struct 
drm_connector *connector)
 
 static enum drm_mode_status
 inno_hdmi_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        struct inno_hdmi *hdmi = connector_to_inno_hdmi(connector);
 
diff --git a/drivers/gpu/drm/rockchip/rk3066_hdmi.c 
b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
index 
784de990da1b2c076a7067dcebb6c4a1273a5d5c..fa9da55949a3376fc3df11bd84e4c5f72d6a9063
 100644
--- a/drivers/gpu/drm/rockchip/rk3066_hdmi.c
+++ b/drivers/gpu/drm/rockchip/rk3066_hdmi.c
@@ -482,7 +482,7 @@ static int rk3066_hdmi_connector_get_modes(struct 
drm_connector *connector)
 
 static enum drm_mode_status
 rk3066_hdmi_connector_mode_valid(struct drm_connector *connector,
-                                struct drm_display_mode *mode)
+                                const struct drm_display_mode *mode)
 {
        u32 vic = drm_match_cea_mode(mode);
 
diff --git a/drivers/gpu/drm/sti/sti_dvo.c b/drivers/gpu/drm/sti/sti_dvo.c
index 
68b8197b3dd16713a49d97f91498b686fdda21ec..96913232479bbccaf77dd2b35c1eb615d074689d
 100644
--- a/drivers/gpu/drm/sti/sti_dvo.c
+++ b/drivers/gpu/drm/sti/sti_dvo.c
@@ -349,7 +349,7 @@ static int sti_dvo_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 sti_dvo_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        int target = mode->clock * 1000;
        int target_min = target - CLK_TOLERANCE_HZ;
diff --git a/drivers/gpu/drm/sti/sti_hda.c b/drivers/gpu/drm/sti/sti_hda.c
index 
829dc4b034e8a79a908bda60485c2b94ef96890c..5ab42574e919faa0b643c4f43a8f1100f98e3b93
 100644
--- a/drivers/gpu/drm/sti/sti_hda.c
+++ b/drivers/gpu/drm/sti/sti_hda.c
@@ -603,7 +603,7 @@ static int sti_hda_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 sti_hda_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        int target = mode->clock * 1000;
        int target_min = target - CLK_TOLERANCE_HZ;
diff --git a/drivers/gpu/drm/sti/sti_hdmi.c b/drivers/gpu/drm/sti/sti_hdmi.c
index 
847470f747c0efad61c2ebdc3fb3746a7a13a863..58962e8675a8d5860f725b8a17a7d0268f23168c
 100644
--- a/drivers/gpu/drm/sti/sti_hdmi.c
+++ b/drivers/gpu/drm/sti/sti_hdmi.c
@@ -1011,7 +1011,7 @@ static int sti_hdmi_connector_get_modes(struct 
drm_connector *connector)
 
 static enum drm_mode_status
 sti_hdmi_connector_mode_valid(struct drm_connector *connector,
-                             struct drm_display_mode *mode)
+                             const struct drm_display_mode *mode)
 {
        int target = mode->clock * 1000;
        int target_min = target - CLK_TOLERANCE_HZ;
diff --git a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c 
b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
index 
b3649449de3026784ae2f3466906403a0b6e3b47..523d32f31e4e1d45ad33e52b22e88900248d0810
 100644
--- a/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
+++ b/drivers/gpu/drm/sun4i/sun4i_hdmi_enc.c
@@ -207,7 +207,7 @@ static int sun4i_hdmi_connector_atomic_check(struct 
drm_connector *connector,
 
 static enum drm_mode_status
 sun4i_hdmi_connector_mode_valid(struct drm_connector *connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        unsigned long long rate = drm_hdmi_compute_mode_clock(mode, 8,
                                                              
HDMI_COLORSPACE_RGB);
diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 
db606e151afc81e26eaacb36a90389acc3b5a1aa..a4f1ba189baa90d15e84de83e8a9f170459bf07c
 100644
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -812,7 +812,7 @@ static const struct drm_connector_funcs 
tegra_dsi_connector_funcs = {
 
 static enum drm_mode_status
 tegra_dsi_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        return MODE_OK;
 }
diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 
6bf2dae82ca0510ae36304c077946114fb570390..c4f9a86460dda25891aeb1eddde1d517cf7f44ad
 100644
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -1137,7 +1137,7 @@ static const struct drm_connector_funcs 
tegra_hdmi_connector_funcs = {
 
 static enum drm_mode_status
 tegra_hdmi_connector_mode_valid(struct drm_connector *connector,
-                               struct drm_display_mode *mode)
+                               const struct drm_display_mode *mode)
 {
        struct tegra_output *output = connector_to_output(connector);
        struct tegra_hdmi *hdmi = to_hdmi(output);
diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index 
bad3b8fcc72692eaf89fe82e1a0c70abc00a6b79..f85ab0eeeb5f46995323e5c57be0c1bb267cae79
 100644
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -1789,7 +1789,7 @@ static int tegra_sor_connector_get_modes(struct 
drm_connector *connector)
 
 static enum drm_mode_status
 tegra_sor_connector_mode_valid(struct drm_connector *connector,
-                              struct drm_display_mode *mode)
+                              const struct drm_display_mode *mode)
 {
        return MODE_OK;
 }
diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c
index 
ffe1f7d1b911d35b0b3d50f4ae55634786b8bebd..6059e32b86d16263a5425d0f30a4d86ad571f3ed
 100644
--- a/drivers/gpu/drm/vc4/vc4_txp.c
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
@@ -192,7 +192,7 @@ static int vc4_txp_connector_get_modes(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 vc4_txp_connector_mode_valid(struct drm_connector *connector,
-                            struct drm_display_mode *mode)
+                            const struct drm_display_mode *mode)
 {
        struct drm_device *dev = connector->dev;
        struct drm_mode_config *mode_config = &dev->mode_config;
diff --git a/drivers/gpu/drm/virtio/virtgpu_display.c 
b/drivers/gpu/drm/virtio/virtgpu_display.c
index 
64baf2f22d9f0566511b38f49a6e3225f2acd9ee..59a45e74a64126e8c7b99462111565499fcd12b0
 100644
--- a/drivers/gpu/drm/virtio/virtgpu_display.c
+++ b/drivers/gpu/drm/virtio/virtgpu_display.c
@@ -189,7 +189,7 @@ static int virtio_gpu_conn_get_modes(struct drm_connector 
*connector)
 }
 
 static enum drm_mode_status virtio_gpu_conn_mode_valid(struct drm_connector 
*connector,
-                                     struct drm_display_mode *mode)
+                                     const struct drm_display_mode *mode)
 {
        struct virtio_gpu_output *output =
                drm_connector_to_virtio_gpu_output(connector);
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c 
b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
index 
f39bf992364da4c264dbff4d56aeb078ca16be29..9cfaa2c5f096127ac10829a5cef0ac81a89be5a7
 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
@@ -2658,7 +2658,7 @@ int vmw_du_helper_plane_update(struct vmw_du_update_plane 
*update)
  * Returns MODE_OK on success, or a drm_mode_status error code.
  */
 enum drm_mode_status vmw_connector_mode_valid(struct drm_connector *connector,
-                                             struct drm_display_mode *mode)
+                                             const struct drm_display_mode 
*mode)
 {
        enum drm_mode_status ret;
        struct drm_device *dev = connector->dev;
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h 
b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
index 
2a6c6d6581e02bb51c9d70cef3ddce1a0f9ecd1a..4eab581883e26d339298fb0fb4386e7dc90c1e6e
 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_kms.h
@@ -435,7 +435,7 @@ int vmw_kms_helper_dirty(struct vmw_private *dev_priv,
                         int increment,
                         struct vmw_kms_dirty *dirty);
 enum drm_mode_status vmw_connector_mode_valid(struct drm_connector *connector,
-                                             struct drm_display_mode *mode);
+                                             const struct drm_display_mode 
*mode);
 int vmw_connector_get_modes(struct drm_connector *connector);
 
 void vmw_kms_helper_validation_finish(struct vmw_private *dev_priv,
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c 
b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
index 
82d18b88f4a7e7aaff2d7123fce1af05754e34d9..cbec3b244eb5483f678f7711d56eeedfed47841b
 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_stdu.c
@@ -839,7 +839,7 @@ static void vmw_stdu_connector_destroy(struct drm_connector 
*connector)
 
 static enum drm_mode_status
 vmw_stdu_connector_mode_valid(struct drm_connector *connector,
-                             struct drm_display_mode *mode)
+                             const struct drm_display_mode *mode)
 {
        enum drm_mode_status ret;
        struct drm_device *dev = connector->dev;
diff --git a/include/drm/drm_modeset_helper_vtables.h 
b/include/drm/drm_modeset_helper_vtables.h
index 
fa9ee6a128bec0205f501df6f7634757f5fcb9ee..b62f41f489625e5177bdc05eef950e6c18c219fd
 100644
--- a/include/drm/drm_modeset_helper_vtables.h
+++ b/include/drm/drm_modeset_helper_vtables.h
@@ -967,7 +967,7 @@ struct drm_connector_helper_funcs {
         * drm_mode_status.
         */
        enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
-                                          struct drm_display_mode *mode);
+                                          const struct drm_display_mode *mode);
 
        /**
         * @mode_valid_ctx:

-- 
2.39.5

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