From 6886a99758d25991ecd6ee995d18f97996b31177 Mon Sep 17 00:00:00 2001 From: Denys Dmytriyenko Date: Thu, 19 Jun 2014 18:53:22 -0400 Subject: udev: update init script for conditional probing of platform bus Make probing of "platform" bus conditional based on PROBE_PLATFORM_BUS variable from /etc/default/udev-cache on subsequent boots when udev cache is used. PROBE_PLATFORM_BUS has to be set to "yes" in order to force probing on every boot, otherwise it uses the old default behaviour of probing it just the first time. This is helpful on modern SoCs where most of the low level peripheral drivers are registered on the platform bus and need to be probed to load the necessary modules and enable the connected buses and subsystems. Signed-off-by: Denys Dmytriyenko Signed-off-by: Richard Purdie --- meta/recipes-core/udev/udev/init | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'meta') diff --git a/meta/recipes-core/udev/udev/init b/meta/recipes-core/udev/udev/init index 410a650bd1..f2c84d5d3e 100644 --- a/meta/recipes-core/udev/udev/init +++ b/meta/recipes-core/udev/udev/init @@ -102,7 +102,12 @@ case "$1" in udevadm control --env=STARTUP=1 if [ "$not_first_boot" != "" ];then - udevadm trigger --action=add --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux --subsystem-nomatch=platform + if [ "$PROBE_PLATFORM_BUS" != "yes" ]; then + PLATFORM_BUS_NOMATCH="--subsystem-nomatch=platform" + else + PLATFORM_BUS_NOMATCH="" + fi + udevadm trigger --action=add --subsystem-nomatch=tty --subsystem-nomatch=mem --subsystem-nomatch=vc --subsystem-nomatch=vtconsole --subsystem-nomatch=misc --subsystem-nomatch=dcon --subsystem-nomatch=pci_bus --subsystem-nomatch=graphics --subsystem-nomatch=backlight --subsystem-nomatch=video4linux $PLATFORM_BUS_NOMATCH (udevadm settle --timeout=3; udevadm control --env=STARTUP=)& else udevadm trigger --action=add -- cgit 1.2.3-korg