netdev - [PATCH net-next] ieee802154: hwsim: fix rcu address annotation

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Message-Id: <20180807143444.32224-1-aring@mojatatu.com>
Date:   Tue,  7 Aug 2018 10:34:44 -0400
From:   Alexander Aring <aring@...atatu.com>
To:     netdev@...r.kernel.org
Cc:     linux-wpan@...r.kernel.org, kernel@...atatu.com,
        Alexander Aring <aring@...atatu.com>,
        Stefan Schmidt <stefan@...enfreihafen.org>
Subject: [PATCH net-next] ieee802154: hwsim: fix rcu address annotation

This patch fixes the following sparse warning about mismatch rcu
attribute for address space annotation:

...
error: incompatible types in comparison expression (different modifiers)
error: incompatible types in comparison expression (different address spaces)
...

Some __rcu annotation was at non-pointers list head structures and one was
missing in edge information which is used by rcu_assign_pointer() to
update edge setting information.

Cc: Stefan Schmidt <stefan@...enfreihafen.org>
Fixes: f25da51fdc38 ("ieee802154: hwsim: add replacement for fakelb")
Signed-off-by: Alexander Aring <aring@...atatu.com>
---
Hopefully I did it right now. Sorry again.

 drivers/net/ieee802154/mac802154_hwsim.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ieee802154/mac802154_hwsim.c b/drivers/net/ieee802154/mac802154_hwsim.c
index 1982308b9b1c..f4e92054f7df 100644
--- a/drivers/net/ieee802154/mac802154_hwsim.c
+++ b/drivers/net/ieee802154/mac802154_hwsim.c
@@ -36,7 +36,7 @@ MODULE_LICENSE("GPL");
 static LIST_HEAD(hwsim_phys);
 static DEFINE_MUTEX(hwsim_phys_lock);
 
-static __rcu LIST_HEAD(hwsim_ifup_phys);
+static LIST_HEAD(hwsim_ifup_phys);
 
 static struct platform_device *mac802154hwsim_dev;
 
@@ -68,7 +68,7 @@ struct hwsim_edge_info {
 
 struct hwsim_edge {
 	struct hwsim_phy *endpoint;
-	struct hwsim_edge_info *info;
+	struct hwsim_edge_info __rcu *info;
 
 	struct list_head list;
 	struct rcu_head rcu;
@@ -81,7 +81,7 @@ struct hwsim_phy {
 	struct hwsim_pib __rcu *pib;
 
 	bool suspended;
-	struct list_head __rcu edges;
+	struct list_head edges;
 
 	struct list_head list;
 	struct list_head list_ifup;
-- 
2.11.0