feat: resetusb

bin/resetusb

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+# Resets all USB host controllers of the system.
+# This is useful in case one stopped working
+# due to a faulty device having been connected to it.
+
+base="/sys/bus/pci/drivers"
+sleep_secs="1"
+
+# This might find a sub-set of these:
+# * 'ohci_hcd' - USB 3.0
+# * 'ehci-pci' - USB 2.0
+# * 'xhci_hcd' - USB 3.0
+echo "Looking for USB standards ..."
+for usb_std in "$base/"?hci*
+do
+    echo "* USB standard '$usb_std' ..."
+    for dev_path in "$usb_std/"*:*
+    do
+        dev="$(basename "$dev_path")"
+        echo "  - Resetting device '$dev' ..."
+        printf '%s' "$dev" | sudo tee "$usb_std/unbind" > /dev/null
+        sleep "$sleep_secs"
+        printf '%s' "$dev" | sudo tee "$usb_std/bind" > /dev/null
+        echo "    done."
+    done
+    echo "  done."
+done
+echo "done."