On 18 May 2015 at 22:02, Jagan Teki <jteki@xxxxxxxxxxxx> wrote:
> Fixes Warning encounter this by applying checkpatch.pl against this file:
> Prefer ether_addr_copy() over memcpy() if the Ethernet addresses
> are __aligned(2)
>
> pahole output for respective structures:
> - addr->sa_data
> struct sockaddr {
> sa_family_t sa_family; /* 0 2 */
> char sa_data[14]; /* 2 14 */
>
> /* size: 16, cachelines: 1, members: 2 */
> /* last cacheline: 16 bytes */
> };
>
> - pnetdev->dev_addr
> dev_addr is interface address infor from generic net_device structure
> which is properly aligned and have some patches with this change as well.
> "staging: rtl8712: fix Prefer ether_addr_copy() over memcpy()"
> (sha1: 36e4d8826b317080e283e4edd08bf8d5ac706f38)
>
> Signed-off-by: Jagan Teki <jteki@xxxxxxxxxxxx>
> Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
> Cc: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
> Cc: Florian Schilhabel <florian.c.schilhabel@xxxxxxxxxxxxxx>
> ---
> Changes for v3:
> - Removed unaligned conversions
> Changes for v2:
> - Describe a changelog, to prove address are aligned
>
> drivers/staging/rtl8712/os_intfs.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/staging/rtl8712/os_intfs.c b/drivers/staging/rtl8712/os_intfs.c
> index 6e776e5..d5f4c4d 100644
> --- a/drivers/staging/rtl8712/os_intfs.c
> +++ b/drivers/staging/rtl8712/os_intfs.c
> @@ -181,7 +181,7 @@ static int r871x_net_set_mac_address(struct net_device *pnetdev, void *p)
> struct sockaddr *addr = p;
>
> if (padapter->bup == false)
> - memcpy(pnetdev->dev_addr, addr->sa_data, ETH_ALEN);
> + ether_addr_copy(pnetdev->dev_addr, addr->sa_data);
> return 0;
> }
>
> --
Ping!
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