diff options
| author | Petr Štetiar <ynezz@true.cz> | 2019-05-10 12:35:17 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-05-11 01:14:29 +0300 |
| commit | 2d2924af96881f3300239156d6ff316a1a3e48e5 (patch) | |
| tree | 1df8f756cf9047063d467ae56dd88080c5dd01eb /drivers/net/ethernet/ti | |
| parent | 1be91314532c4a2779fa17665b6d0368972b570b (diff) | |
| download | linux-2d2924af96881f3300239156d6ff316a1a3e48e5.tar.xz | |
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/ti')
| -rw-r--r-- | drivers/net/ethernet/ti/cpsw.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/ti/cpsw.c b/drivers/net/ethernet/ti/cpsw.c index b18eeb05b993..634fc484a0b3 100644 --- a/drivers/net/ethernet/ti/cpsw.c +++ b/drivers/net/ethernet/ti/cpsw.c @@ -2233,7 +2233,7 @@ static int cpsw_probe_dt(struct cpsw_platform_data *data, no_phy_slave: mac_addr = of_get_mac_address(slave_node); if (!IS_ERR(mac_addr)) { - memcpy(slave_data->mac_addr, mac_addr, ETH_ALEN); + ether_addr_copy(slave_data->mac_addr, mac_addr); } else { ret = ti_cm_get_macid(&pdev->dev, i, slave_data->mac_addr); |