[PATCH v2] libertas: add checks for the return value of sysfs_create_group

[Kangjie Lu]

sysfs_create_group() could fail. The fix checkes its return values
and issue error messages if it fails.

Signed-off-by: Kangjie Lu <k...@umn.edu>
---
 drivers/net/wireless/marvell/libertas/mesh.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/net/wireless/marvell/libertas/mesh.c 
b/drivers/net/wireless/marvell/libertas/mesh.c
index b0cb16ef8d1d..2315fdff56c2 100644
--- a/drivers/net/wireless/marvell/libertas/mesh.c
+++ b/drivers/net/wireless/marvell/libertas/mesh.c
@@ -797,7 +797,12 @@ static void lbs_persist_config_init(struct net_device *dev)
 {
        int ret;
        ret = sysfs_create_group(&(dev->dev.kobj), &boot_opts_group);
+       if (ret)
+               pr_err("failed to create boot_opts_group.\n");
+
        ret = sysfs_create_group(&(dev->dev.kobj), &mesh_ie_group);
+       if (ret)
+               pr_err("failed to create mesh_ie_group.\n");
 }
 
 static void lbs_persist_config_remove(struct net_device *dev)
-- 
2.17.1