Reviewed-by: Mika Kahola <[email protected]>

On Tue, 2015-09-08 at 13:40 +0300, [email protected] wrote:
> From: Ville Syrjälä <[email protected]>
> 
> Make adjusted_mode const whereever we don't have to modify it. This only
> covers cases when we have a local adjusted_mode variable, and doesn't
> make any difference for cases where we just dereference
> pipe_config->adjusted_mode.
> 
> Signed-off-by: Ville Syrjälä <[email protected]>
> ---
>  drivers/gpu/drm/i915/dvo.h           |  4 ++--
>  drivers/gpu/drm/i915/dvo_ch7017.c    |  4 ++--
>  drivers/gpu/drm/i915/dvo_ch7xxx.c    |  4 ++--
>  drivers/gpu/drm/i915/dvo_ivch.c      |  4 ++--
>  drivers/gpu/drm/i915/dvo_ns2501.c    |  4 ++--
>  drivers/gpu/drm/i915/dvo_sil164.c    |  4 ++--
>  drivers/gpu/drm/i915/dvo_tfp410.c    |  4 ++--
>  drivers/gpu/drm/i915/intel_audio.c   |  2 +-
>  drivers/gpu/drm/i915/intel_crt.c     |  2 +-
>  drivers/gpu/drm/i915/intel_display.c |  8 ++++----
>  drivers/gpu/drm/i915/intel_dp.c      |  2 +-
>  drivers/gpu/drm/i915/intel_dp_mst.c  |  2 +-
>  drivers/gpu/drm/i915/intel_drv.h     |  2 +-
>  drivers/gpu/drm/i915/intel_dsi.c     |  2 +-
>  drivers/gpu/drm/i915/intel_dvo.c     |  2 +-
>  drivers/gpu/drm/i915/intel_hdmi.c    | 22 +++++++++++-----------
>  drivers/gpu/drm/i915/intel_panel.c   | 14 ++++----------
>  drivers/gpu/drm/i915/intel_pm.c      |  9 +++------
>  drivers/gpu/drm/i915/intel_sdvo.c    |  2 +-
>  19 files changed, 44 insertions(+), 53 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/dvo.h b/drivers/gpu/drm/i915/dvo.h
> index 3121633..0e2c1b9 100644
> --- a/drivers/gpu/drm/i915/dvo.h
> +++ b/drivers/gpu/drm/i915/dvo.h
> @@ -94,8 +94,8 @@ struct intel_dvo_dev_ops {
>        * after this function is called.
>        */
>       void (*mode_set)(struct intel_dvo_device *dvo,
> -                      struct drm_display_mode *mode,
> -                      struct drm_display_mode *adjusted_mode);
> +                      const struct drm_display_mode *mode,
> +                      const struct drm_display_mode *adjusted_mode);
>  
>       /*
>        * Probe for a connected output, and return detect_status.
> diff --git a/drivers/gpu/drm/i915/dvo_ch7017.c 
> b/drivers/gpu/drm/i915/dvo_ch7017.c
> index 86b27d1..cbb2202 100644
> --- a/drivers/gpu/drm/i915/dvo_ch7017.c
> +++ b/drivers/gpu/drm/i915/dvo_ch7017.c
> @@ -255,8 +255,8 @@ static enum drm_mode_status ch7017_mode_valid(struct 
> intel_dvo_device *dvo,
>  }
>  
>  static void ch7017_mode_set(struct intel_dvo_device *dvo,
> -                         struct drm_display_mode *mode,
> -                         struct drm_display_mode *adjusted_mode)
> +                         const struct drm_display_mode *mode,
> +                         const struct drm_display_mode *adjusted_mode)
>  {
>       uint8_t lvds_pll_feedback_div, lvds_pll_vco_control;
>       uint8_t outputs_enable, lvds_control_2, lvds_power_down;
> diff --git a/drivers/gpu/drm/i915/dvo_ch7xxx.c 
> b/drivers/gpu/drm/i915/dvo_ch7xxx.c
> index 80449f4..4b4acc1 100644
> --- a/drivers/gpu/drm/i915/dvo_ch7xxx.c
> +++ b/drivers/gpu/drm/i915/dvo_ch7xxx.c
> @@ -275,8 +275,8 @@ static enum drm_mode_status ch7xxx_mode_valid(struct 
> intel_dvo_device *dvo,
>  }
>  
>  static void ch7xxx_mode_set(struct intel_dvo_device *dvo,
> -                         struct drm_display_mode *mode,
> -                         struct drm_display_mode *adjusted_mode)
> +                         const struct drm_display_mode *mode,
> +                         const struct drm_display_mode *adjusted_mode)
>  {
>       uint8_t tvco, tpcp, tpd, tlpf, idf;
>  
> diff --git a/drivers/gpu/drm/i915/dvo_ivch.c b/drivers/gpu/drm/i915/dvo_ivch.c
> index e082f75..ff9f1b0 100644
> --- a/drivers/gpu/drm/i915/dvo_ivch.c
> +++ b/drivers/gpu/drm/i915/dvo_ivch.c
> @@ -394,8 +394,8 @@ static bool ivch_get_hw_state(struct intel_dvo_device 
> *dvo)
>  }
>  
>  static void ivch_mode_set(struct intel_dvo_device *dvo,
> -                       struct drm_display_mode *mode,
> -                       struct drm_display_mode *adjusted_mode)
> +                       const struct drm_display_mode *mode,
> +                       const struct drm_display_mode *adjusted_mode)
>  {
>       struct ivch_priv *priv = dvo->dev_priv;
>       uint16_t vr40 = 0;
> diff --git a/drivers/gpu/drm/i915/dvo_ns2501.c 
> b/drivers/gpu/drm/i915/dvo_ns2501.c
> index 97ae8aa..063859f 100644
> --- a/drivers/gpu/drm/i915/dvo_ns2501.c
> +++ b/drivers/gpu/drm/i915/dvo_ns2501.c
> @@ -546,8 +546,8 @@ static enum drm_mode_status ns2501_mode_valid(struct 
> intel_dvo_device *dvo,
>  }
>  
>  static void ns2501_mode_set(struct intel_dvo_device *dvo,
> -                         struct drm_display_mode *mode,
> -                         struct drm_display_mode *adjusted_mode)
> +                         const struct drm_display_mode *mode,
> +                         const struct drm_display_mode *adjusted_mode)
>  {
>       const struct ns2501_configuration *conf;
>       struct ns2501_priv *ns = (struct ns2501_priv *)(dvo->dev_priv);
> diff --git a/drivers/gpu/drm/i915/dvo_sil164.c 
> b/drivers/gpu/drm/i915/dvo_sil164.c
> index fa01149..26f13eb 100644
> --- a/drivers/gpu/drm/i915/dvo_sil164.c
> +++ b/drivers/gpu/drm/i915/dvo_sil164.c
> @@ -190,8 +190,8 @@ static enum drm_mode_status sil164_mode_valid(struct 
> intel_dvo_device *dvo,
>  }
>  
>  static void sil164_mode_set(struct intel_dvo_device *dvo,
> -                         struct drm_display_mode *mode,
> -                         struct drm_display_mode *adjusted_mode)
> +                         const struct drm_display_mode *mode,
> +                         const struct drm_display_mode *adjusted_mode)
>  {
>       /* As long as the basics are set up, since we don't have clock
>        * dependencies in the mode setup, we can just leave the
> diff --git a/drivers/gpu/drm/i915/dvo_tfp410.c 
> b/drivers/gpu/drm/i915/dvo_tfp410.c
> index 7853719..6f1a0a6 100644
> --- a/drivers/gpu/drm/i915/dvo_tfp410.c
> +++ b/drivers/gpu/drm/i915/dvo_tfp410.c
> @@ -222,8 +222,8 @@ static enum drm_mode_status tfp410_mode_valid(struct 
> intel_dvo_device *dvo,
>  }
>  
>  static void tfp410_mode_set(struct intel_dvo_device *dvo,
> -                         struct drm_display_mode *mode,
> -                         struct drm_display_mode *adjusted_mode)
> +                         const struct drm_display_mode *mode,
> +                         const struct drm_display_mode *adjusted_mode)
>  {
>       /* As long as the basics are set up, since we don't have clock 
> dependencies
>       * in the mode setup, we can just leave the registers alone and 
> everything
> diff --git a/drivers/gpu/drm/i915/intel_audio.c 
> b/drivers/gpu/drm/i915/intel_audio.c
> index 5848a50..1f6fbb4 100644
> --- a/drivers/gpu/drm/i915/intel_audio.c
> +++ b/drivers/gpu/drm/i915/intel_audio.c
> @@ -397,7 +397,7 @@ void intel_audio_codec_enable(struct intel_encoder 
> *intel_encoder)
>  {
>       struct drm_encoder *encoder = &intel_encoder->base;
>       struct intel_crtc *crtc = to_intel_crtc(encoder->crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>       struct drm_connector *connector;
>       struct drm_device *dev = encoder->dev;
>       struct drm_i915_private *dev_priv = dev->dev_private;
> diff --git a/drivers/gpu/drm/i915/intel_crt.c 
> b/drivers/gpu/drm/i915/intel_crt.c
> index af5e43b..601a805 100644
> --- a/drivers/gpu/drm/i915/intel_crt.c
> +++ b/drivers/gpu/drm/i915/intel_crt.c
> @@ -158,7 +158,7 @@ static void intel_crt_set_dpms(struct intel_encoder 
> *encoder, int mode)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crt *crt = intel_encoder_to_crt(encoder);
>       struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>       u32 adpa;
>  
>       if (INTEL_INFO(dev)->gen >= 5)
> diff --git a/drivers/gpu/drm/i915/intel_display.c 
> b/drivers/gpu/drm/i915/intel_display.c
> index f83e25d..761d75a 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4348,7 +4348,7 @@ skl_update_scaler(struct intel_crtc_state *crtc_state, 
> bool force_detach,
>  int skl_update_scaler_crtc(struct intel_crtc_state *state)
>  {
>       struct intel_crtc *intel_crtc = to_intel_crtc(state->base.crtc);
> -     struct drm_display_mode *adjusted_mode = &state->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &state->base.adjusted_mode;
>  
>       DRM_DEBUG_KMS("Updating scaler for [CRTC:%i] scaler_user index %u.%u\n",
>                     intel_crtc->base.base.id, intel_crtc->pipe, 
> SKL_CRTC_INDEX);
> @@ -6427,7 +6427,7 @@ static int ironlake_fdi_compute_config(struct 
> intel_crtc *intel_crtc,
>                                      struct intel_crtc_state *pipe_config)
>  {
>       struct drm_device *dev = intel_crtc->base.dev;
> -     struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
>       int lane, link_bw, fdi_dotclock, ret;
>       bool needs_recompute = false;
>  
> @@ -6506,7 +6506,7 @@ static int intel_crtc_compute_config(struct intel_crtc 
> *crtc,
>  {
>       struct drm_device *dev = crtc->base.dev;
>       struct drm_i915_private *dev_priv = dev->dev_private;
> -     struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
>  
>       /* FIXME should check pixel clock limits on all platforms */
>       if (INTEL_INFO(dev)->gen < 4) {
> @@ -7574,7 +7574,7 @@ static void intel_set_pipe_timings(struct intel_crtc 
> *intel_crtc)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       enum pipe pipe = intel_crtc->pipe;
>       enum transcoder cpu_transcoder = intel_crtc->config->cpu_transcoder;
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>       uint32_t crtc_vtotal, crtc_vblank_end;
>       int vsyncshift = 0;
>  
> diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
> index 45ab25e..9b04c29 100644
> --- a/drivers/gpu/drm/i915/intel_dp.c
> +++ b/drivers/gpu/drm/i915/intel_dp.c
> @@ -1586,7 +1586,7 @@ static void intel_dp_prepare(struct intel_encoder 
> *encoder)
>       struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
>       enum port port = dp_to_dig_port(intel_dp)->port;
>       struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>  
>       intel_dp_set_link_params(intel_dp, crtc->config);
>  
> diff --git a/drivers/gpu/drm/i915/intel_dp_mst.c 
> b/drivers/gpu/drm/i915/intel_dp_mst.c
> index dc2f67e..8684d6c 100644
> --- a/drivers/gpu/drm/i915/intel_dp_mst.c
> +++ b/drivers/gpu/drm/i915/intel_dp_mst.c
> @@ -40,7 +40,7 @@ static bool intel_dp_mst_compute_config(struct 
> intel_encoder *encoder,
>       struct drm_atomic_state *state;
>       int bpp, i;
>       int lane_count, slots;
> -     struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
>       struct drm_connector *drm_connector;
>       struct intel_connector *connector, *found = NULL;
>       struct drm_connector_state *connector_state;
> diff --git a/drivers/gpu/drm/i915/intel_drv.h 
> b/drivers/gpu/drm/i915/intel_drv.h
> index 46484e4..5c80cf7 100644
> --- a/drivers/gpu/drm/i915/intel_drv.h
> +++ b/drivers/gpu/drm/i915/intel_drv.h
> @@ -674,7 +674,7 @@ struct intel_hdmi {
>                               const void *frame, ssize_t len);
>       void (*set_infoframes)(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode);
> +                            const struct drm_display_mode *adjusted_mode);
>       bool (*infoframe_enabled)(struct drm_encoder *encoder);
>  };
>  
> diff --git a/drivers/gpu/drm/i915/intel_dsi.c 
> b/drivers/gpu/drm/i915/intel_dsi.c
> index 2d4ecfb..ba36010 100644
> --- a/drivers/gpu/drm/i915/intel_dsi.c
> +++ b/drivers/gpu/drm/i915/intel_dsi.c
> @@ -759,7 +759,7 @@ static void intel_dsi_prepare(struct intel_encoder 
> *intel_encoder)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
>       struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>       enum port port;
>       unsigned int bpp = intel_crtc->config->pipe_bpp;
>       u32 val, tmp;
> diff --git a/drivers/gpu/drm/i915/intel_dvo.c 
> b/drivers/gpu/drm/i915/intel_dvo.c
> index 555afbc..8492053 100644
> --- a/drivers/gpu/drm/i915/intel_dvo.c
> +++ b/drivers/gpu/drm/i915/intel_dvo.c
> @@ -251,7 +251,7 @@ static void intel_dvo_pre_enable(struct intel_encoder 
> *encoder)
>       struct drm_device *dev = encoder->base.dev;
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>       struct intel_dvo *intel_dvo = enc_to_dvo(encoder);
>       int pipe = crtc->pipe;
>       u32 dvo_val;
> diff --git a/drivers/gpu/drm/i915/intel_hdmi.c 
> b/drivers/gpu/drm/i915/intel_hdmi.c
> index e03dca0..adbbc7b 100644
> --- a/drivers/gpu/drm/i915/intel_hdmi.c
> +++ b/drivers/gpu/drm/i915/intel_hdmi.c
> @@ -447,7 +447,7 @@ static void intel_write_infoframe(struct drm_encoder 
> *encoder,
>  }
>  
>  static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
> -                                      struct drm_display_mode *adjusted_mode)
> +                                      const struct drm_display_mode 
> *adjusted_mode)
>  {
>       struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(encoder);
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> @@ -491,7 +491,7 @@ static void intel_hdmi_set_spd_infoframe(struct 
> drm_encoder *encoder)
>  
>  static void
>  intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
> -                           struct drm_display_mode *adjusted_mode)
> +                           const struct drm_display_mode *adjusted_mode)
>  {
>       union hdmi_infoframe frame;
>       int ret;
> @@ -506,7 +506,7 @@ intel_hdmi_set_hdmi_infoframe(struct drm_encoder *encoder,
>  
>  static void g4x_set_infoframes(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode)
> +                            const struct drm_display_mode *adjusted_mode)
>  {
>       struct drm_i915_private *dev_priv = encoder->dev->dev_private;
>       struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
> @@ -658,7 +658,7 @@ static bool intel_hdmi_set_gcp_infoframe(struct 
> drm_encoder *encoder)
>  
>  static void ibx_set_infoframes(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode)
> +                            const struct drm_display_mode *adjusted_mode)
>  {
>       struct drm_i915_private *dev_priv = encoder->dev->dev_private;
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> @@ -710,7 +710,7 @@ static void ibx_set_infoframes(struct drm_encoder 
> *encoder,
>  
>  static void cpt_set_infoframes(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode)
> +                            const struct drm_display_mode *adjusted_mode)
>  {
>       struct drm_i915_private *dev_priv = encoder->dev->dev_private;
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> @@ -752,7 +752,7 @@ static void cpt_set_infoframes(struct drm_encoder 
> *encoder,
>  
>  static void vlv_set_infoframes(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode)
> +                            const struct drm_display_mode *adjusted_mode)
>  {
>       struct drm_i915_private *dev_priv = encoder->dev->dev_private;
>       struct intel_digital_port *intel_dig_port = enc_to_dig_port(encoder);
> @@ -804,7 +804,7 @@ static void vlv_set_infoframes(struct drm_encoder 
> *encoder,
>  
>  static void hsw_set_infoframes(struct drm_encoder *encoder,
>                              bool enable,
> -                            struct drm_display_mode *adjusted_mode)
> +                            const struct drm_display_mode *adjusted_mode)
>  {
>       struct drm_i915_private *dev_priv = encoder->dev->dev_private;
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> @@ -841,7 +841,7 @@ static void intel_hdmi_prepare(struct intel_encoder 
> *encoder)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *crtc = to_intel_crtc(encoder->base.crtc);
>       struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>       u32 hdmi_val;
>  
>       hdmi_val = SDVO_ENCODING_HDMI;
> @@ -1523,7 +1523,7 @@ static void intel_hdmi_pre_enable(struct intel_encoder 
> *encoder)
>  {
>       struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(&encoder->base);
>       struct intel_crtc *intel_crtc = to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>  
>       intel_hdmi_prepare(encoder);
>  
> @@ -1540,7 +1540,7 @@ static void vlv_hdmi_pre_enable(struct intel_encoder 
> *encoder)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *intel_crtc =
>               to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>       enum dpio_channel port = vlv_dport_to_channel(dport);
>       int pipe = intel_crtc->pipe;
>       u32 val;
> @@ -1806,7 +1806,7 @@ static void chv_hdmi_pre_enable(struct intel_encoder 
> *encoder)
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *intel_crtc =
>               to_intel_crtc(encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>       enum dpio_channel ch = vlv_dport_to_channel(dport);
>       int pipe = intel_crtc->pipe;
>       int data, i, stagger;
> diff --git a/drivers/gpu/drm/i915/intel_panel.c 
> b/drivers/gpu/drm/i915/intel_panel.c
> index 83ec94a..eda9b8c 100644
> --- a/drivers/gpu/drm/i915/intel_panel.c
> +++ b/drivers/gpu/drm/i915/intel_panel.c
> @@ -105,12 +105,8 @@ intel_pch_panel_fitting(struct intel_crtc *intel_crtc,
>                       struct intel_crtc_state *pipe_config,
>                       int fitting_mode)
>  {
> -     struct drm_display_mode *adjusted_mode;
> -     int x, y, width, height;
> -
> -     adjusted_mode = &pipe_config->base.adjusted_mode;
> -
> -     x = y = width = height = 0;
> +     const struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
> +     int x = 0, y = 0, width = 0, height = 0;
>  
>       /* Native modes don't need fitting */
>       if (adjusted_mode->crtc_hdisplay == pipe_config->pipe_src_w &&
> @@ -230,7 +226,7 @@ static inline u32 panel_fitter_scaling(u32 source, u32 
> target)
>  static void i965_scale_aspect(struct intel_crtc_state *pipe_config,
>                             u32 *pfit_control)
>  {
> -     struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
>       u32 scaled_width = adjusted_mode->crtc_hdisplay *
>               pipe_config->pipe_src_h;
>       u32 scaled_height = pipe_config->pipe_src_w *
> @@ -310,9 +306,7 @@ void intel_gmch_panel_fitting(struct intel_crtc 
> *intel_crtc,
>  {
>       struct drm_device *dev = intel_crtc->base.dev;
>       u32 pfit_control = 0, pfit_pgm_ratios = 0, border = 0;
> -     struct drm_display_mode *adjusted_mode;
> -
> -     adjusted_mode = &pipe_config->base.adjusted_mode;
> +     struct drm_display_mode *adjusted_mode = 
> &pipe_config->base.adjusted_mode;
>  
>       /* Native modes don't need fitting */
>       if (adjusted_mode->crtc_hdisplay == pipe_config->pipe_src_w &&
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 7aa9a4e..797f157 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -697,12 +697,9 @@ static void pineview_update_wm(struct drm_crtc 
> *unused_crtc)
>  
>       crtc = single_enabled_crtc(dev);
>       if (crtc) {
> -             const struct drm_display_mode *adjusted_mode;
> +             const struct drm_display_mode *adjusted_mode = 
> &to_intel_crtc(crtc)->config->base.adjusted_mode;
>               int pixel_size = crtc->primary->state->fb->bits_per_pixel / 8;
> -             int clock;
> -
> -             adjusted_mode = 
> &to_intel_crtc(crtc)->config->base.adjusted_mode;
> -             clock = adjusted_mode->crtc_clock;
> +             int clock = adjusted_mode->crtc_clock;
>  
>               /* Display SR */
>               wm = intel_calculate_wm(clock, &pineview_display_wm,
> @@ -2084,7 +2081,7 @@ hsw_compute_linetime_wm(struct drm_device *dev, struct 
> drm_crtc *crtc)
>  {
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &intel_crtc->config->base.adjusted_mode;
>       u32 linetime, ips_linetime;
>  
>       if (!intel_crtc->active)
> diff --git a/drivers/gpu/drm/i915/intel_sdvo.c 
> b/drivers/gpu/drm/i915/intel_sdvo.c
> index 810e0bb..b8ed706 100644
> --- a/drivers/gpu/drm/i915/intel_sdvo.c
> +++ b/drivers/gpu/drm/i915/intel_sdvo.c
> @@ -1189,7 +1189,7 @@ static void intel_sdvo_pre_enable(struct intel_encoder 
> *intel_encoder)
>       struct drm_device *dev = intel_encoder->base.dev;
>       struct drm_i915_private *dev_priv = dev->dev_private;
>       struct intel_crtc *crtc = to_intel_crtc(intel_encoder->base.crtc);
> -     struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
> +     const struct drm_display_mode *adjusted_mode = 
> &crtc->config->base.adjusted_mode;
>       struct drm_display_mode *mode = &crtc->config->base.mode;
>       struct intel_sdvo *intel_sdvo = to_sdvo(intel_encoder);
>       u32 sdvox;


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