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56fa8cdbf1
Make sure that /proc/sys/kernel/hotplug exists before trying to disable
the uevent-helper mechanism.
Since kernel commit 86d56134f1b6 ("kobject: Make support for
uevent_helper optional.") the kernel can be built without uevent-helper
support. In this case /proc/sys/kernel/hotplug does not exist and the
current sysvinit script fails with
/etc/rcS.d/S04udev: line 132: can't create /proc/sys/kernel/hotplug: nonexistent directory
when trying to disable the uevent-helper mechanism during boot.
Note that a single NULL-character has always been sufficient to disable.
(From OE-Core rev: f7b8445f2e89ad0a59c2859f9eb26855769f1070)
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>