From b452af23a8602ebf7bfb0eb084383ecd595face5 Mon Sep 17 00:00:00 2001 From: Matthias Schiffer Date: Tue, 4 Sep 2018 21:27:27 +0200 Subject: [PATCH] mpc85xx: add migration script for TP-Link TL-WDR4900 v1 WLAN PCI paths PCI paths of the WLAN devices have changed between kernel 4.4 and 4.9; migrate config so existing wifi-iface definitions don't break. This is implemented as a hotplug handler rather than a uci-defaults script as the migration script must run before the 10-wifi-detect hotplug handler. Signed-off-by: Matthias Schiffer --- .../etc/hotplug.d/ieee80211/05-wifi-migrate | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 target/linux/mpc85xx/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate diff --git a/target/linux/mpc85xx/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate b/target/linux/mpc85xx/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate new file mode 100644 index 00000000000..49dde052f21 --- /dev/null +++ b/target/linux/mpc85xx/base-files/etc/hotplug.d/ieee80211/05-wifi-migrate @@ -0,0 +1,63 @@ +#!/bin/sh + +# This must run before 10-wifi-detect + + +[ "${ACTION}" = "add" ] || return + + +. /lib/functions.sh + + +check_radio() +{ + local cfg="$1" to="$2" + + config_get path "$cfg" path + + [ "$path" = "$to" ] && PATH_EXISTS=true +} + +do_migrate_radio() +{ + local cfg="$1" from="$2" to="$3" + + config_get path "$cfg" path + + [ "$path" = "$from" ] || return + + uci set "wireless.${cfg}.path=${to}" + WIRELESS_CHANGED=true + + logger -t wifi-migrate "Updated path of wireless.${cfg} from '${from}' to '${to}'" +} + +migrate_radio() +{ + local from="$1" to="$2" + + config_load wireless + + # Check if there is already a section with the target path: In this case, the system + # was already upgraded to a version without this migration script before; better bail out, + # as we can't be sure we don't break more than we fix. + PATH_EXISTS=false + config_foreach check_radio wifi-device "$to" + $PATH_EXISTS && return + + config_foreach do_migrate_radio wifi-device "$from" "$to" +} + + +WIRELESS_CHANGED=false + +case "$(board_name)" in +tplink,tl-wdr4900-v1) + migrate_radio 'ffe09000.pcie/pci0000:00/0000:00:00.0/0000:01:00.0' 'ffe09000.pcie/pci9000:00/9000:00:00.0/9000:01:00.0' + migrate_radio 'ffe0a000.pcie/pci0001:02/0001:02:00.0/0001:03:00.0' 'ffe0a000.pcie/pcia000:02/a000:02:00.0/a000:03:00.0' + ;; +esac + +$WIRELESS_CHANGED && uci commit wireless + +exit 0 -- 2.30.2