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drm/i915: Don't enable the cursor on a disable pipe

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On HSW enabling a plane on a disabled pipe may hang the entire system.
And there's no good reason for doing it ever, so just don't.

v2: Move the crtc active checks to intel_crtc_cursor_{set,move} to
    avoid confusing people during modeset

Cc: stable@vger.kernel.org
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-17 18:33:44 +03:00 committed by Daniel Vetter
parent cc173961a6
commit f2f5f771c5
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/intel_display.c
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@ -6929,7 +6929,8 @@ static int intel_crtc_cursor_set(struct drm_crtc *crtc,
intel_crtc->cursor_width = width;
intel_crtc->cursor_height = height;
intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
if (intel_crtc->active)
intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
return 0;
fail_unpin:
@ -6948,7 +6949,8 @@ static int intel_crtc_cursor_move(struct drm_crtc *crtc, int x, int y)
intel_crtc->cursor_x = x;
intel_crtc->cursor_y = y;
intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
if (intel_crtc->active)
intel_crtc_update_cursor(crtc, intel_crtc->cursor_bo != NULL);
return 0;
}