Advanced USB delay handling

USB boot delay is now handled with the usbdelay kernel param (default=0)

We use the built in delay of usb-storage to control this. by setting the
module's delay param. If your USB device doesn't work on first boot, try
setting usbdelay=10 or so

Signed-off-by: Aaron Griffin <aaronmgriffin@gmail.com>

2 files changed, 11 insertions, 5 deletions

diff --git a/archiso/hooks/archiso b/archiso/hooks/archiso
index d33e409..65e849e 100644
--- a/archiso/hooks/archiso
+++ b/archiso/hooks/archiso
@@ -54,13 +54,11 @@ run_hook ()
     msg "done."
 
     # external drives may need to settle
-    msg ":: Waiting for usb devices to settle..."
+    msg ":: Waiting for devices to settle..."
     /sbin/udevadm trigger --subsystem-match=usb
     /sbin/udevadm settle
-    if [ "${rootdelay}" != "0" ]; then
-        /bin/sleep "${rootdelay}"
-        export rootdelay=0
-    fi
+    msg ":: Waiting ${usbdelay:-0}s for USB devices"
+    /bin/sleep "${usbdelay:-0}"
 
     msg ":: Scanning for boot device..."
 
diff --git a/archiso/hooks/archiso-early b/archiso/hooks/archiso-early
new file mode 100644
index 0000000..0a83218
--- /dev/null
+++ b/archiso/hooks/archiso-early
@@ -0,0 +1,8 @@
+# vim: set ft=sh:
+run_hook ()
+{
+    # Set our usbdelay time. Default: 0
+    /bin/mkdir -p /etc/modprobe.d/
+    echo "options usb-storage delay_use=${usbdelay:-0}" >/
+        /etc/modprobe.d/usb-delay
+}