[Bug 1443249] Re: After kernel-3.13.04-41, wireless script checks wrong sys file.

[katsu]

[the root cause]
$ apt-get changelog linux-image-3.13.0-41-generic
--->---> snip --->---> snip --->---> snip --->---> snip --->--->
* PCI: Rename sysfs 'enabled' file back to 'enable'
    - LP: #1393477
--->---> snip --->---> snip --->---> snip --->---> snip --->--->

[recommendation 1]
* revert 17-fix-wireless-hook.patch in pm-utils package.

  * debian/patches/17-fix-wireless-hook.patch: Fix typo in wireless
    hook (LP: #1299975).

[recommendation 2]
$ diff -Nur wireless.orig wireless
--- wireless.orig	2015-04-12 13:52:04.911478886 +0900
+++ wireless	2015-04-12 13:52:37.791641939 +0900
@@ -19,8 +19,12 @@
     [ -L "/sys/class/net/$1/device/driver" ] || return 1
     # Skip if not a wireless card.
     [ -d "/sys/class/net/$1/wireless" ] || return 1
+    # Confirm sysfs filename. (enable or enabled)
+    [ -e "/sys/class/net/$1/device/enable" ] && sysfsname="enable"
+    [ -e "/sys/class/net/$1/device/enabled" ] && sysfsname="enabled"
     # Also don't do anything if the device is disabled
-    [ "$(cat /sys/class/net/$1/device/enabled)" = "1" ] || return 1
+    [ "$(cat /sys/class/net/$1/device/$sysfsname)" = "1" ] || return 1
+    unset sysfsname
     driver="$(readlink "/sys/class/net/$1/device/driver")"
     driver=${driver##*/}
     case $driver in

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Title:
  After kernel-3.13.04-41, wireless script checks wrong sys file.

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