mvebu: Migrate uci config to new PCIe path

[openwrt/staging/mkresin.git] / target / linux / mvebu / base-files / etc / hotplug.d / ieee80211 / 00-wifi-config-migrate

diff --git a/target/linux/mvebu/base-files/etc/hotplug.d/ieee80211/00-wifi-config-migrate b/target/linux/mvebu/base-files/etc/hotplug.d/ieee80211/00-wifi-config-migrate
new file mode 100644 (file)
index 0000000..a8173b3
--- /dev/null
+++ b/target/linux/mvebu/base-files/etc/hotplug.d/ieee80211/00-wifi-config-migrate
@@ -0,0 +1,41 @@
+#!/bin/sh
+
+# The pcie-controller device was renamed to pcie in Linux kernel 4.14
+# commit 28fbb9c539e2 ("ARM: dts: marvell: fix PCI bus dtc warnings").
+# This script migrates the path in the UCI configuration from the old
+# name to the new name and also back, when am upgrade or downgrade is
+# done. It checks if the name exists before changing the configuration.
+# This has to be done before the 10-wifi-detect script from mac80211 is
+# executed because this would add the devices again under the new path
+# name.
+
+. /lib/functions.sh
+
+PATH_CHANGED=0
+
+rename_wifi_path() {
+       local path_old=$(uci get wireless.${1}.path)
+       local path_new=$(echo ${path_old} | sed "${2}")
+
+       if [ -e "/sys/devices/platform/${path_new}" ] && [ ${path_old} != ${path_new} ]
+       then 
+               uci set wireless.${1}.path=${path_new}
+               PATH_CHANGED=1
+       fi
+}
+
+rename_wifi_path_list() {
+       # migration from kernel 4.9 to 4.14
+       rename_wifi_path $1 "s/soc:pcie-controller/soc:pcie/"
+       # migration from kernel 4.14 to 4.9
+       rename_wifi_path $1 "s/soc:pcie/soc:pcie-controller/"
+}
+
+[ "${ACTION}" = "add" ] && {
+       [ ! -e /etc/config/wireless ] && return
+
+       config_load wireless
+       config_foreach rename_wifi_path_list wifi-device
+
+       [ "$PATH_CHANGED" = "1" ] && uci commit wireless
+}