gs_usb USB-CAN kernel driver from vendored source and installs it for the running kernel. Needed on NVIDIA Jetson / ZED Box machines, whose L4T (tegra) kernels ship without any USB-CAN drivers — the Axol Hub enumerates on USB but no can* network interfaces ever appear.
gs_usb already works (any desktop Linux), this is a no-op.
can.setup runs this check automatically, so you normally never need to invoke it directly.The vendored driver is the upstream 5.15
gs_usb with two backports the Axol Hub requires: per-channel dev_id (to tell the left/right arms apart) and bulk endpoint discovery from the USB descriptor (the Hub firmware uses EP1 IN/EP1 OUT, while the stock 5.15 driver hardcodes OUT 2). The module is installed under /lib/modules/$(uname -r)/updates/ and loads automatically on boot. Requires kernel headers and build-essential; both ship with JetPack.