2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-13 07:44:00 +08:00
linux-next/Documentation/firmware_class/hotplug-script
Magnus Damm 3317fad5e9 firmware: Update hotplug script
Update the in-kernel hotplug example script to work
properly with recent kernels. Without this fix the
script may load the firmware twice - both at "add"
and "remove" time.

The second load only triggers in the case when multiple
firmware images are used. A good example is the b43
driver which does not work properly without this fix.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2010-08-05 13:53:34 -07:00

18 lines
443 B
Bash

#!/bin/sh
# Simple hotplug script sample:
#
# Both $DEVPATH and $FIRMWARE are already provided in the environment.
HOTPLUG_FW_DIR=/usr/lib/hotplug/firmware/
if [ "$SUBSYSTEM" == "firmware" -a "$ACTION" == "add" ]; then
if [ -f $HOTPLUG_FW_DIR/$FIRMWARE ]; then
echo 1 > /sys/$DEVPATH/loading
cat $HOTPLUG_FW_DIR/$FIRMWARE > /sys/$DEVPATH/data
echo 0 > /sys/$DEVPATH/loading
else
echo -1 > /sys/$DEVPATH/loading
fi
fi