Re: [PATCH] ethernet: s2io: fix setting mac address during resume

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (master)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Wed, 13 Oct 2021 16:35:49 +0200 you wrote:
> From: Arnd Bergmann <arnd@xxxxxxxx>
> 
> After recent cleanups, gcc started warning about a suspicious
> memcpy() call during the s2io_io_resume() function:
> 
> In function '__dev_addr_set',
>     inlined from 'eth_hw_addr_set' at include/linux/etherdevice.h:318:2,
>     inlined from 's2io_set_mac_addr' at drivers/net/ethernet/neterion/s2io.c:5205:2,
>     inlined from 's2io_io_resume' at drivers/net/ethernet/neterion/s2io.c:8569:7:
> arch/x86/include/asm/string_32.h:182:25: error: '__builtin_memcpy' accessing 6 bytes at offsets 0 and 2 overlaps 4 bytes at offset 2 [-Werror=restrict]
>   182 | #define memcpy(t, f, n) __builtin_memcpy(t, f, n)
>       |                         ^~~~~~~~~~~~~~~~~~~~~~~~~
> include/linux/netdevice.h:4648:9: note: in expansion of macro 'memcpy'
>  4648 |         memcpy(dev->dev_addr, addr, len);
>       |         ^~~~~~
> 
> [...]

Here is the summary with links:
  - ethernet: s2io: fix setting mac address during resume
    https://git.kernel.org/netdev/net/c/40507e7aada8

You are awesome, thank you!
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