sfc: mcdi_port: Mark expected switch fall-through
authorGustavo A. R. Silva <gustavo@embeddedor.com>
Mon, 29 Apr 2019 15:37:55 +0000 (10:37 -0500)
committerDavid S. Miller <davem@davemloft.net>
Wed, 1 May 2019 15:23:58 +0000 (11:23 -0400)
commit4a46a7c35322dbbaeef1e2844c9cd41c99cefc66
tree0d5bb1e5ab2452aa9977f81d7ab2c78231ddc857
parentb587bdaf5f820cf7dac2c1b351db97bf98e1f427
sfc: mcdi_port: Mark expected switch fall-through

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>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/ethernet/sfc/mcdi_port.c