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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/marvell
parentpowerpc: tsi108: fix similar warning reported by kbuild test robot (diff)
downloadlinux-dev-2d2924af96881f3300239156d6ff316a1a3e48e5.tar.xz
linux-dev-2d2924af96881f3300239156d6ff316a1a3e48e5.zip
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/marvell')
-rw-r--r--drivers/net/ethernet/marvell/mv643xx_eth.c2
-rw-r--r--drivers/net/ethernet/marvell/mvneta.c2
-rw-r--r--drivers/net/ethernet/marvell/sky2.c2
3 files changed, 3 insertions, 3 deletions
diff --git a/drivers/net/ethernet/marvell/mv643xx_eth.c b/drivers/net/ethernet/marvell/mv643xx_eth.c
index 07e254fc96ef..409b69fd4374 100644
--- a/drivers/net/ethernet/marvell/mv643xx_eth.c
+++ b/drivers/net/ethernet/marvell/mv643xx_eth.c
@@ -2750,7 +2750,7 @@ static int mv643xx_eth_shared_of_add_port(struct platform_device *pdev,
mac_addr = of_get_mac_address(pnp);
if (!IS_ERR(mac_addr))
- memcpy(ppd.mac_addr, mac_addr, ETH_ALEN);
+ ether_addr_copy(ppd.mac_addr, mac_addr);
mv643xx_eth_property(pnp, "tx-queue-size", ppd.tx_queue_size);
mv643xx_eth_property(pnp, "tx-sram-addr", ppd.tx_sram_addr);
diff --git a/drivers/net/ethernet/marvell/mvneta.c b/drivers/net/ethernet/marvell/mvneta.c
index 8186135883ed..e758650b2c26 100644
--- a/drivers/net/ethernet/marvell/mvneta.c
+++ b/drivers/net/ethernet/marvell/mvneta.c
@@ -4565,7 +4565,7 @@ static int mvneta_probe(struct platform_device *pdev)
dt_mac_addr = of_get_mac_address(dn);
if (!IS_ERR(dt_mac_addr)) {
mac_from = "device tree";
- memcpy(dev->dev_addr, dt_mac_addr, ETH_ALEN);
+ ether_addr_copy(dev->dev_addr, dt_mac_addr);
} else {
mvneta_get_mac_addr(pp, hw_mac_addr);
if (is_valid_ether_addr(hw_mac_addr)) {
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index 9d070cca3e9e..5adf307fbbfd 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -4805,7 +4805,7 @@ static struct net_device *sky2_init_netdev(struct sky2_hw *hw, unsigned port,
*/
iap = of_get_mac_address(hw->pdev->dev.of_node);
if (!IS_ERR(iap))
- memcpy(dev->dev_addr, iap, ETH_ALEN);
+ ether_addr_copy(dev->dev_addr, iap);
else
memcpy_fromio(dev->dev_addr, hw->regs + B2_MAC_1 + port * 8,
ETH_ALEN);