Stephen Rothwell [off-list ref] writes:

On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell [off-list ref] wrote:

quoted

After merging the wireless-drivers-next tree, today's linux-next build
(x86_64 allmodconfig) produced these warnings:

drivers/net/wireless/intel/iwlwifi/iwl-drv.c: In function 'iwl_parse_tlv_firmware':
drivers/net/wireless/intel/iwlwifi/iwl-drv.c:1098:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (iwlwifi_mod_params.enable_ini)
       ^
drivers/net/wireless/intel/iwlwifi/iwl-drv.c:1100:3: note: here
   default:
   ^~~~~~~
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c: In function 'iwl_parse_fw_dbg_tlv':
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c:203:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
    iwl_fw_dbg_copy_tlv(trans, tlv, true);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c:204:3: note: here
   default:
   ^~~~~~~

Introduced by commit

  f14cda6f3b31 ("iwlwifi: trans: parse and store debug ini TLVs")

These are noted because I use -Wimplict-fallthrough

The warnings can be suppressed by adding a comment like
	/* fall through */
at the appropriate place to indicate that the fallthough is intended.

I am still seeing these warnings (but in the net-next tree now) and I
do not see a fix patch in the wireless-drivers-next tree.

Luca did submit a patch[1] for cfg80211 to fix those but I don't see any
patches for iwlwifi (even in the one pending pull request he sent), not
sure what happened. I know that Luca is already on holidays but adding
Emmanuel, maybe he can help here?

[1] https://patchwork.kernel.org/patch/10732065/

-- 
Kalle Valo