From: Lyude Paul lyude@redhat.com
commit ca0367ca5d9216644b41f86348d6661f8d9e32d8 upstream.
It looks like that when we moved nouveau over to using drm_dp_aux_init() and registering it's aux bus during late connector registration, we totally forgot to fix the failure codepath in nouveau_connector_create() - as it still seems to assume that drm_dp_aux_init() can fail (it can't).
So, let's fix that and also add a missing check to ensure that we've properly allocated nv_connector->aux.name while we're at it.
Signed-off-by: Lyude Paul lyude@redhat.com Reviewed-by: David Airlie airlied@linux.ie Fixes: fd43ad9d47e7 ("drm/nouveau/kms/nv50-: Move AUX adapter reg to connector late register/early unregister") Cc: stable@vger.kernel.org # v5.14+ Link: https://patchwork.freedesktop.org/patch/msgid/20220526204313.656473-1-lyude@... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/nouveau/nouveau_connector.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-)
--- a/drivers/gpu/drm/nouveau/nouveau_connector.c +++ b/drivers/gpu/drm/nouveau/nouveau_connector.c @@ -1361,13 +1361,11 @@ nouveau_connector_create(struct drm_devi snprintf(aux_name, sizeof(aux_name), "sor-%04x-%04x", dcbe->hasht, dcbe->hashm); nv_connector->aux.name = kstrdup(aux_name, GFP_KERNEL); - drm_dp_aux_init(&nv_connector->aux); - if (ret) { - NV_ERROR(drm, "Failed to init AUX adapter for sor-%04x-%04x: %d\n", - dcbe->hasht, dcbe->hashm, ret); + if (!nv_connector->aux.name) { kfree(nv_connector); - return ERR_PTR(ret); + return ERR_PTR(-ENOMEM); } + drm_dp_aux_init(&nv_connector->aux); fallthrough; default: funcs = &nouveau_connector_funcs;