Commit 6ccf996a0dec for kernel

commit 6ccf996a0dec1852dab94ad865f27b4904750e12
Author: Mary Guillemard <mary@mary.zone>
Date:   Wed Oct 7 16:30:15 2026 +0200

    drm/nouveau: Skip the Turing CE workaround object for non-GR channels

    This workaround is here for the old Gallium driver and predate async CE
    and NVDEC.  Instead of only skipping it for NVDEC, let's only apply it
    in case of GR channels.

    This should make async CE work properly on Turing by stopping the assign
    of a GRCE. (here CE0)

    Signed-off-by: Mary Guillemard <mary@mary.zone>
    Reviewed-by: Lyude Paul <lyude@redhat.com>
    Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
    Signed-off-by: Lyude Paul <lyude@redhat.com>
    Link: https://patch.msgid.link/20261007-turing-async-ce-fix-v1-1-12ee6ccd1a3c@mary.zone

diff --git a/drivers/gpu/drm/nouveau/nouveau_abi16.c b/drivers/gpu/drm/nouveau/nouveau_abi16.c
index 4542d5f4ded8..b776030460f7 100644
--- a/drivers/gpu/drm/nouveau/nouveau_abi16.c
+++ b/drivers/gpu/drm/nouveau/nouveau_abi16.c
@@ -488,7 +488,7 @@ nouveau_abi16_ioctl_channel_alloc(ABI16_IOCTL_ARGS)
 			goto done;
 		break;
 	case NV_DEVICE_INFO_V0_TURING:
-		if (engine != NV_DEVICE_HOST_RUNLIST_ENGINES_NVDEC) {
+		if (engine == NV_DEVICE_HOST_RUNLIST_ENGINES_GR) {
 			ret = nvif_object_ctor(&chan->chan->user, "abi16CeWar",
 					       0, TURING_DMA_COPY_A, NULL, 0,
 					       &chan->ce);