linux_dsm_epyc7002/drivers/net/ethernet/cavium
Petr Štetiar 2d2924af96 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: a51645f70f ("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>
2019-05-10 15:14:29 -07:00
..
common net: cavium: clean up return value check in cavium_ptp_probe 2018-11-23 17:26:07 -08:00
liquidio Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2019-05-07 22:03:58 -07:00
octeon net: ethernet: fix similar warning reported by kbuild test robot 2019-05-10 15:14:29 -07:00
thunder net: ethernet: support of_get_mac_address new ERR_PTR error 2019-05-07 12:22:47 -07:00
Kconfig net: devlink: select NET_DEVLINK from drivers 2019-03-24 14:55:31 -04:00
Makefile net: add support for Cavium PTP coprocessor 2018-01-16 14:31:14 -05:00