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drm/nouveau: Don't WARN_ON VCPI allocation failures

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[ Upstream commit b513a18cf1 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lyude Paul
2019-01-28 16:03:50 -05:00
committed by Greg Kroah-Hartman
parent 173b6557fc
commit 2b76fcb6ba
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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@@ -759,7 +759,8 @@ nv50_msto_enable(struct drm_encoder *encoder)
slots = drm_dp_find_vcpi_slots(&mstm->mgr, mstc->pbn);
r = drm_dp_mst_allocate_vcpi(&mstm->mgr, mstc->port, mstc->pbn, slots);
WARN_ON(!r);
if (!r)
DRM_DEBUG_KMS("Failed to allocate VCPI\n");
if (!mstm->links++)
nv50_outp_acquire(mstm->outp);