[PATCH] fm10k_main.c: fix missing return value check of alloc_skb()

[Jiecheng Wu]

Function fm10k_init_module() defined in 
drivers/net/ethernet/intel/fm10k/fm10k_main.c calls alloc_workqueue() to 
allocate memory for struct workqueue_struct which is dereferenced immediately. 
As alloc_workqueue() may return NULL on failure, this code piece may cause NULL 
pointer dereference bug.
---
 drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c 
b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
index 3f53654..78a43d6 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
@@ -41,6 +41,8 @@ static int __init fm10k_init_module(void)
        /* create driver workqueue */
        fm10k_workqueue = alloc_workqueue("%s", WQ_MEM_RECLAIM, 0,
                                          fm10k_driver_name);
+       if (!fm10k_workqueue)
+               return -ENOMEM;
 
        fm10k_dbg_init();
 
-- 
2.6.4