net: cisco: enic: Replace GFP_ATOMIC with GFP_KERNEL

vnic_dev_register(), vnic_rq_alloc_bufs() and vnic_wq_alloc_bufs()
are never called in atomic context.
They call kzalloc() with GFP_ATOMIC, which is not necessary.
GFP_ATOMIC can be replaced with GFP_KERNEL.

This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Acked-by: Govindarajulu Varadarajan <gvaradar@cisco.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/cisco/enic/vnic_dev.c

@@ -1071,7 +1071,7 @@ struct vnic_dev *vnic_dev_register(struct vnic_dev *vdev,
 	unsigned int num_bars)
 {
 	if (!vdev) {
-		vdev = kzalloc(sizeof(struct vnic_dev), GFP_ATOMIC);
+		vdev = kzalloc(sizeof(struct vnic_dev), GFP_KERNEL);
 		if (!vdev)
 			return NULL;
 	}

drivers/net/ethernet/cisco/enic/vnic_rq.c

@@ -35,7 +35,7 @@ static int vnic_rq_alloc_bufs(struct vnic_rq *rq)
 	unsigned int blks = VNIC_RQ_BUF_BLKS_NEEDED(count);
 
 	for (i = 0; i < blks; i++) {
-		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_ATOMIC);
+		rq->bufs[i] = kzalloc(VNIC_RQ_BUF_BLK_SZ(count), GFP_KERNEL);
 		if (!rq->bufs[i])
 			return -ENOMEM;
 	}

drivers/net/ethernet/cisco/enic/vnic_wq.c

@@ -35,7 +35,7 @@ static int vnic_wq_alloc_bufs(struct vnic_wq *wq)
 	unsigned int blks = VNIC_WQ_BUF_BLKS_NEEDED(count);
 
 	for (i = 0; i < blks; i++) {
-		wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_ATOMIC);
+		wq->bufs[i] = kzalloc(VNIC_WQ_BUF_BLK_SZ(count), GFP_KERNEL);
 		if (!wq->bufs[i])
 			return -ENOMEM;
 	}