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drm/nouveau/kms/nv50-: clear SW state of disabled windows harder

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The most innocuous result of not having done this is that we end up
sending unnecessary methods when we next enable the window.

However, interactions with the code handling skipping disables when
an update immediately follows, and window ownership assignment, can
lead to upsetting the display hardware on Volta and newer.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Ben Skeggs 2020-06-04 11:00:01 +10:00
parent 21454fe697
commit dd67cab5db
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/nouveau/dispnv50/wndw.c
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@ -192,6 +192,8 @@ nv50_wndw_atomic_check_release(struct nv50_wndw *wndw,
wndw->func->release(wndw, asyw, asyh);
asyw->ntfy.handle = 0;
asyw->sema.handle = 0;
asyw->xlut.handle = 0;
memset(asyw->image.handle, 0x00, sizeof(asyw->image.handle));
}
static int
@ -519,7 +521,8 @@ nv50_wndw_prepare_fb(struct drm_plane *plane, struct drm_plane_state *state)
return PTR_ERR(ctxdma);
}
asyw->image.handle[0] = ctxdma->object.handle;
if (asyw->visible)
asyw->image.handle[0] = ctxdma->object.handle;
}
asyw->state.fence = dma_resv_get_excl_rcu(nvbo->bo.base.resv);