[PATCH] examples/kni: clear warning about discarding const qualifier

[Ke Zhang <ke1x.zhang@intel.com>]

The warning info:
warning: passing argument 1 of ‘memcpy’ discards ‘const’
qualifier from pointer target type

Compulsory type conversion to clear compile warning.

Signed-off-by: Ke Zhang <ke1x.zhang@intel.com>
---
 kernel/linux/kni/kni_misc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c
index 780187d8bf..6f9dab4732 100644
--- a/kernel/linux/kni/kni_misc.c
+++ b/kernel/linux/kni/kni_misc.c
@@ -403,10 +403,10 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
 
 	/* if user has provided a valid mac address */
 	if (is_valid_ether_addr(dev_info.mac_addr))
-		memcpy(net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
+		memcpy((unsigned char *)net_dev->dev_addr, dev_info.mac_addr, ETH_ALEN);
 	else
 		/* Generate random MAC address. */
-		eth_random_addr(net_dev->dev_addr);
+		eth_random_addr((uint8_t *)net_dev->dev_addr);
 
 	if (dev_info.mtu)
 		net_dev->mtu = dev_info.mtu;
-- 
2.25.1