Bugfix causal_conv1d_fn interface (#168)

Author: HarborYuan

mamba_ssm/ops/selective_scan_interface.py

@@ -318,7 +318,7 @@ def mamba_inner_ref(
     delta_rank = delta_proj_weight.shape[1]
     d_state = A.shape[-1] * (1 if not A.is_complex() else 2)
     x, z = xz.chunk(2, dim=1)
-    x = causal_conv1d_fn(x, rearrange(conv1d_weight, "d 1 w -> d w"), conv1d_bias, "silu")
+    x = causal_conv1d_fn(x, rearrange(conv1d_weight, "d 1 w -> d w"), conv1d_bias, None, "silu")
     # We're being very careful here about the layout, to avoid extra transposes.
     # We want delta to have d as the slowest moving dimension
     # and L as the fastest moving dimension, since those are what the ssm_scan kernel expects.