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. (From OE-Core rev: 70a695735e0a7d14448f2f5a9986bfe105210a91) Signed-off-by: Denys Dmytriyenko <denys@ti.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
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@ -102,7 +102,12 @@ case "$1" in
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udevadm control --env=STARTUP=1
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if [ "$not_first_boot" != "" ];then
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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
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if [ "$PROBE_PLATFORM_BUS" != "yes" ]; then
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PLATFORM_BUS_NOMATCH="--subsystem-nomatch=platform"
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else
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PLATFORM_BUS_NOMATCH=""
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fi
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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
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(udevadm settle --timeout=3; udevadm control --env=STARTUP=)&
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else
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udevadm trigger --action=add
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