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path: root/drivers/net/bonding/bond_sysfs.c
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Diffstat (limited to 'drivers/net/bonding/bond_sysfs.c')
-rw-r--r--drivers/net/bonding/bond_sysfs.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 98db8edd9c75..8ffbafd500fd 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -91,7 +91,6 @@ static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifna
* creates and deletes entire bonds.
*
* The class parameter is ignored.
- *
*/
static ssize_t bonding_store_bonds(struct class *cls,
struct class_attribute *attr,
@@ -425,11 +424,15 @@ static ssize_t bonding_show_primary(struct device *d,
struct device_attribute *attr,
char *buf)
{
- int count = 0;
struct bonding *bond = to_bond(d);
+ struct slave *primary;
+ int count = 0;
- if (bond->primary_slave)
- count = sprintf(buf, "%s\n", bond->primary_slave->dev->name);
+ rcu_read_lock();
+ primary = rcu_dereference(bond->primary_slave);
+ if (primary)
+ count = sprintf(buf, "%s\n", primary->dev->name);
+ rcu_read_unlock();
return count;
}