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net: thunderx: Use struct_size() helper in kmalloc()

PATCH Applied Gustavo A. R. Silva 2 participants 2 messages Oct 8, 2020 – Oct 10, 2020

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PATCH 1/1 net: thunderx: Use struct_size() helper in kmalloc()

Make use of the new struct_size() helper instead of the offsetof() idiom.

---
 drivers/net/ethernet/cavium/thunder/nicvf_main.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
drivers/net/ethernet/cavium/thunder/nicvf_main.c +2 -2
index 0a94c396173b..f3b7b443f964 100644
@@ -2065,8 +2065,8 @@ static void nicvf_set_rx_mode(struct net_device *netdev)
 			mode |= BGX_XCAST_MCAST_FILTER;
 			/* here we need to copy mc addrs */
 			if (netdev_mc_count(netdev)) {
-				mc_list = kmalloc(offsetof(typeof(*mc_list),
-							   mc[netdev_mc_count(netdev)]),
+				mc_list = kmalloc(struct_size(mc_list, mc,
+							      netdev_mc_count(netdev)),
 						  GFP_ATOMIC);
 				if (unlikely(!mc_list))
 					return;
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