[dpdk-dev] [PATCH 2/2] kni: fix coccinelle warnings

[Stephen Hemminger <stephen@networkplumber.org>]

This fixes cases in KNI where kernel allocation function return value
is needlessly casted.

lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c:3181:25-28: WARNING: casting value returned by memory allocation function to (u32 *) is useless.
lib/librte_eal/linuxapp/kni/kni_vhost.c:690:9-28: WARNING: casting value returned by memory allocation function to (struct rte_kni_fifo *) is useless.
lib/librte_eal/linuxapp/kni/kni_vhost.c:684:13-27: WARNING: casting value returned by memory allocation function to (struct sk_buff *) is useless

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c | 4 ++--
 lib/librte_eal/linuxapp/kni/kni_vhost.c            | 8 +++-----
 2 files changed, 5 insertions(+), 7 deletions(-)

diff --git a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
index 47198bb..eed8df6 100644
--- a/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
+++ b/lib/librte_eal/linuxapp/kni/ethtool/igb/igb_main.c
@@ -3178,8 +3178,8 @@ static int igb_sw_init(struct igb_adapter *adapter)
 				     GFP_ATOMIC);
 
 	/* Setup and initialize a copy of the hw vlan table array */
-	adapter->shadow_vfta = (u32 *)kzalloc(sizeof(u32) * E1000_VFTA_ENTRIES,
-					GFP_ATOMIC);
+	adapter->shadow_vfta = kzalloc(sizeof(u32) * E1000_VFTA_ENTRIES,
+				       GFP_ATOMIC);
 #ifdef NO_KNI
 	/* These calls may decrease the number of queues */
 	if (hw->mac.type < e1000_i210) {
diff --git a/lib/librte_eal/linuxapp/kni/kni_vhost.c b/lib/librte_eal/linuxapp/kni/kni_vhost.c
index 013a677..d0c12a6 100644
--- a/lib/librte_eal/linuxapp/kni/kni_vhost.c
+++ b/lib/librte_eal/linuxapp/kni/kni_vhost.c
@@ -681,14 +681,12 @@ kni_vhost_backend_init(struct kni_dev *kni)
 	}
 
 	/* cache init */
-	q->cache = (struct sk_buff*)
-		kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(struct sk_buff),
-			GFP_KERNEL);
+	q->cache = kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(struct sk_buff),
+			   GFP_KERNEL);
 	if (!q->cache)
 		goto free_fd;
 
-	fifo = (struct rte_kni_fifo*)
-		kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(void *)
+	fifo = kzalloc(RTE_KNI_VHOST_MAX_CACHE_SIZE * sizeof(void *)
 			+ sizeof(struct rte_kni_fifo), GFP_KERNEL);
 	if (!fifo)
 		goto free_cache;
-- 
2.1.4