linux-kernel - Re: linux-next: build warnings after merge of the wireless-drivers-next tree

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Message-ID: <20181219134738.4efed34f@canb.auug.org.au>
Date:   Wed, 19 Dec 2018 13:47:38 +1100
From:   Stephen Rothwell <sfr@...b.auug.org.au>
To:     Kalle Valo <kvalo@...eaurora.org>,
        Wireless <linux-wireless@...r.kernel.org>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Sara Sharon <sara.sharon@...el.com>,
        Luca Coelho <luciano.coelho@...el.com>,
        Kees Cook <keescook@...gle.com>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        David Miller <davem@...emloft.net>,
        Networking <netdev@...r.kernel.org>
Subject: Re: linux-next: build warnings after merge of the
 wireless-drivers-next tree

Hi all,

On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>
> 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.

-- 
Cheers,
Stephen Rothwell

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