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drm/i915: Reorder drm_vblank_put() vs. need_vlv_dsi_wa

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Drop the vblank reference only after we've done the hideous
need_vlv_dsi_wa stuff. This will make it easier to reuse the
the vblank evasion machinery elsewhere.

Keeping the vblank reference for a bit longer is not a
problem. In fact we might want to not drop it at all until
intel_pipe_update_end(), but we'll leave that idea for later.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20231213102519.13500-3-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
This commit is contained in:
Ville Syrjälä
2023-12-13 12:25:12 +02:00
parent c045bc428f
commit bb83f348ea
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/i915/display/intel_crtc.c
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@@ -614,8 +614,6 @@ void intel_pipe_update_start(struct intel_atomic_state *state,
finish_wait(wq, &wait);
drm_crtc_vblank_put(&crtc->base);
/*
* On VLV/CHV DSI the scanline counter would appear to
* increment approx. 1/3 of a scanline before start of vblank.
@@ -634,6 +632,8 @@ void intel_pipe_update_start(struct intel_atomic_state *state,
while (need_vlv_dsi_wa && scanline == vblank_start)
scanline = intel_get_crtc_scanline(crtc);
drm_crtc_vblank_put(&crtc->base);
crtc->debug.scanline_start = scanline;
crtc->debug.start_vbl_time = ktime_get();
crtc->debug.start_vbl_count = intel_crtc_get_vblank_counter(crtc);