path: root/drivers/net/ethernet/nxp/lpc_eth.c
diff options
authorPetr Štetiar <ynezz@true.cz>2019-05-10 11:35:17 +0200
committerDavid S. Miller <davem@davemloft.net>2019-05-10 15:14:29 -0700
commit2d2924af96881f3300239156d6ff316a1a3e48e5 (patch)
tree1df8f756cf9047063d467ae56dd88080c5dd01eb /drivers/net/ethernet/nxp/lpc_eth.c
parentpowerpc: tsi108: fix similar warning reported by kbuild test robot (diff)
net: ethernet: fix similar warning reported by kbuild test robot
This patch fixes following (similar) warning reported by kbuild test robot: In function ‘memcpy’, inlined from ‘smsc75xx_init_mac_address’ at drivers/net/usb/smsc75xx.c:778:3, inlined from ‘smsc75xx_bind’ at drivers/net/usb/smsc75xx.c:1501:2: ./include/linux/string.h:355:9: warning: argument 2 null where non-null expected [-Wnonnull] return __builtin_memcpy(p, q, size); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/net/usb/smsc75xx.c: In function ‘smsc75xx_bind’: ./include/linux/string.h:355:9: note: in a call to built-in function ‘__builtin_memcpy’ I've replaced the offending memcpy with ether_addr_copy, because I'm 100% sure, that of_get_mac_address can't return NULL as it returns valid pointer or ERR_PTR encoded value, nothing else. I'm hesitant to just change IS_ERR into IS_ERR_OR_NULL check, as this would make the warning disappear also, but it would be confusing to check for impossible return value just to make a compiler happy. I'm now changing all occurencies of memcpy to ether_addr_copy after the of_get_mac_address call, as it's very likely, that we're going to get similar reports from kbuild test robot in the future. Fixes: a51645f70f63 ("net: ethernet: support of_get_mac_address new ERR_PTR error") Reported-by: kbuild test robot <lkp@intel.com> Signed-off-by: Petr Štetiar <ynezz@true.cz> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/nxp/lpc_eth.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/nxp/lpc_eth.c b/drivers/net/ethernet/nxp/lpc_eth.c
index da138edddd32..fec604c4c0d3 100644
--- a/drivers/net/ethernet/nxp/lpc_eth.c
+++ b/drivers/net/ethernet/nxp/lpc_eth.c
@@ -1369,7 +1369,7 @@ static int lpc_eth_drv_probe(struct platform_device *pdev)
if (!is_valid_ether_addr(ndev->dev_addr)) {
const char *macaddr = of_get_mac_address(np);
if (!IS_ERR(macaddr))
- memcpy(ndev->dev_addr, macaddr, ETH_ALEN);
+ ether_addr_copy(ndev->dev_addr, macaddr);
if (!is_valid_ether_addr(ndev->dev_addr))