drm/sun4i: Eliminate pointless on stack copy of drm_display_info

Just use a pointer to the display_info rather than make a copy
on stack.

Cc: Maxime Ripard <maxime.ripard@bootlin.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190326173810.11979-1-ville.syrjala@linux.intel.com
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c
index 64c43ee..3e97953 100644 (file)
--- a/drivers/gpu/drm/sun4i/sun4i_tcon.c
+++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c
@@ -478,7 +478,7 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
                                     const struct drm_display_mode *mode)
 {
        struct drm_connector *connector = sun4i_tcon_get_connector(encoder);
-       struct drm_display_info display_info = connector->display_info;
+       const struct drm_display_info *info = &connector->display_info;
        unsigned int bp, hsync, vsync;
        u8 clk_delay;
        u32 val = 0;
@@ -539,7 +539,7 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
        if (mode->flags & DRM_MODE_FLAG_PVSYNC)
                val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
 
-       if (display_info.bus_flags & DRM_BUS_FLAG_DE_LOW)
+       if (info->bus_flags & DRM_BUS_FLAG_DE_LOW)
                val |= SUN4I_TCON0_IO_POL_DE_NEGATIVE;
 
        /*
@@ -557,10 +557,10 @@ static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
         * Following code is a way to avoid quirks all around TCON
         * and DOTCLOCK drivers.
         */
-       if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
+       if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE)
                clk_set_phase(tcon->dclk, 240);
 
-       if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
+       if (info->bus_flags & DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)
                clk_set_phase(tcon->dclk, 0);
 
        regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,