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drm/nouveau/kms/nv50-: guard against enabling cursor on disabled heads

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Userspace has started doing this, which upsets the display class hw
error checking in various unpleasant ways.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2015-07-28 17:20:57 +10:00
parent b7eea2d7e6
commit 697bb728d9
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/nouveau/nv50_display.c
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@ -979,7 +979,7 @@ nv50_crtc_cursor_show_hide(struct nouveau_crtc *nv_crtc, bool show, bool update)
{
struct nv50_mast *mast = nv50_mast(nv_crtc->base.dev);
if (show && nv_crtc->cursor.nvbo)
if (show && nv_crtc->cursor.nvbo && nv_crtc->base.enabled)
nv50_crtc_cursor_show(nv_crtc);
else
nv50_crtc_cursor_hide(nv_crtc);