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SubjectRe: [PATCH net-next] sfc: mcdi_port: Mark expected switch fall-through
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On 29/04/2019 16:37, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch
> cases where we are expecting to fall through.
>
> This patch fixes the following warning:
>
> drivers/net/ethernet/sfc/mcdi_port.c: In function ‘efx_mcdi_phy_decode_link’:
> ./include/linux/compiler.h:77:22: warning: this statement may fall through [-Wimplicit-fallthrough=]
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^~~~~~~~~~~~~~~~~~~~~~~~~~
> ./include/asm-generic/bug.h:125:2: note: in expansion of macro ‘unlikely’
> unlikely(__ret_warn_on); \
> ^~~~~~~~
> drivers/net/ethernet/sfc/mcdi_port.c:344:3: note: in expansion of macro ‘WARN_ON’
> WARN_ON(1);
> ^~~~~~~
> drivers/net/ethernet/sfc/mcdi_port.c:345:2: note: here
> case MC_CMD_FCNTL_OFF:
> ^~~~
>
> Warning level 3 was used: -Wimplicit-fallthrough=3
>
> This patch is part of the ongoing efforts to enable
> -Wimplicit-fallthrough.
>
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Acked-by: Edward Cree <ecree@solarflare.com>

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