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drm/nouveau: Don't WARN_ON VCPI allocation failures 

This is much louder then we want. VCPI allocation failures are quite
normal, since they will happen if any part of the modesetting process is
interrupted by removing the DP MST topology in question. So just print a
debugging message on VCPI failures instead.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Fixes: f479c0ba4a ("drm/nouveau/kms/nv50: initial support for DP 1.2 multi-stream")
Cc: Ben Skeggs <bskeggs@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: nouveau@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v4.10+
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Lyude Paul 2019-01-28 16:03:50 -05:00 committed by Ben Skeggs
parent b1d03fc36e
commit b513a18cf1
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/nouveau/dispnv50/disp.c
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@ -817,7 +817,8 @@ nv50_msto_enable(struct drm_encoder *encoder)
r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, armh->dp.pbn,
armh->dp.tu);
WARN_ON(!r);
if (!r)
DRM_DEBUG_KMS("Failed to allocate VCPI\n");
if (!mstm->links++)
nv50_outp_acquire(mstm->outp);