diff options
Diffstat (limited to 'drivers/infiniband/core/sysfs.c')
| -rw-r--r-- | drivers/infiniband/core/sysfs.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 7a599c5e455f..8c7adc27aeea 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -349,10 +349,15 @@ static struct attribute *port_default_attrs[] = { static size_t print_ndev(const struct ib_gid_attr *gid_attr, char *buf) { - if (!gid_attr->ndev) - return -EINVAL; - - return sprintf(buf, "%s\n", gid_attr->ndev->name); + struct net_device *ndev; + size_t ret = -EINVAL; + + rcu_read_lock(); + ndev = rcu_dereference(gid_attr->ndev); + if (ndev) + ret = sprintf(buf, "%s\n", ndev->name); + rcu_read_unlock(); + return ret; } static size_t print_gid_type(const struct ib_gid_attr *gid_attr, char *buf) |