From 3a9825b27d6fac698514b918ac916ad1788f8c37 Mon Sep 17 00:00:00 2001
From: Isaac Hermida <isaac.hermida@digi.com>
Date: Mon, 8 Feb 2016 11:19:44 +0100
Subject: [PATCH] meta-digi-dey: Add wifi pre/post actions to suspend script

It has been observed that the wireless interface ocassionally fails to resume
from suspend on extensive long run validation testing, so we workaround it by
bringing the interface down before suspend and bring it up again after resume

This reverts commit a77cd1406d998ddcd1e8fcb3f504e017a35b9262.

https://jira.digi.com/browse/DEL-2217

Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
---
 .../recipes-core/busybox/busybox-1.23.2/suspend    | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/meta-digi-dey/recipes-core/busybox/busybox-1.23.2/suspend b/meta-digi-dey/recipes-core/busybox/busybox-1.23.2/suspend
index 2f0df579a..84699c6d0 100755
--- a/meta-digi-dey/recipes-core/busybox/busybox-1.23.2/suspend
+++ b/meta-digi-dey/recipes-core/busybox/busybox-1.23.2/suspend
@@ -25,6 +25,18 @@ usage() {
 	\n"
 }
 
+suspend_interfaces() {
+	if grep -qs '^wlan0' /var/run/ifstate; then
+		ifdown wlan0 && up_wlan_on_resume="1" && sleep 0.5 && rmmod ath6kl_sdio
+	fi
+}
+
+resume_interfaces() {
+	if ! grep -qs '^wlan0' /var/run/ifstate; then
+		[ -n "${up_wlan_on_resume}" ] && modprobe ath6kl_sdio && sleep 0.5 && ifup wlan0
+	fi
+}
+
 while getopts "h" c; do
 	case "${c}" in
 		h) usage; exit;;
@@ -33,12 +45,14 @@ done
 
 if [ -f "${syspower}" ]; then
 	# Pre-suspend actions
+	suspend_interfaces
 
 	# Suspend the device
 	printf "mem" > ${syspower}
 	sleep .5
 
 	# Post-resume actions
+	resume_interfaces
 else
 	printf "\n[ERROR] File ${syspower} not found\n\n"
 fi