From: Felix Fietkau <nbd@nbd.name>
Date: Mon, 12 Mar 2018 08:50:33 +0000 (+0100)
Subject: swconfig: convert swdevs_lock from spinlock to mutex
X-Git-Tag: v18.06.0-rc1~664
X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fopenwrt.git;a=commitdiff_plain;h=ed3860c3e3ebe484c00cf603c29e68af28eb0839

swconfig: convert swdevs_lock from spinlock to mutex

Should fix some sleep-while-atomic issues

Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
index 78569a9302..e8a684742c 100644
--- a/target/linux/generic/files/drivers/net/phy/swconfig.c
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -36,7 +36,7 @@ MODULE_LICENSE("GPL");
 
 static int swdev_id;
 static struct list_head swdevs;
-static DEFINE_SPINLOCK(swdevs_lock);
+static DEFINE_MUTEX(swdevs_lock);
 struct swconfig_callback;
 
 struct swconfig_callback {
@@ -296,13 +296,13 @@ static struct nla_policy link_policy[SWITCH_LINK_ATTR_MAX] = {
 static inline void
 swconfig_lock(void)
 {
-	spin_lock(&swdevs_lock);
+	mutex_lock(&swdevs_lock);
 }
 
 static inline void
 swconfig_unlock(void)
 {
-	spin_unlock(&swdevs_lock);
+	mutex_unlock(&swdevs_lock);
 }
 
 static struct switch_dev *