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

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

[Stephen Rothwell]

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Hi all,

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.

-- 
Cheers,
Stephen Rothwell

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

[Kalle Valo]

Stephen Rothwell <sfr@canb.auug.org.au> writes:

> Hi all,
>
> 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 take it that -Wimplict-fallthrough is not enabled by default yet? So
Dave and Linus won't see these warnings?

What I'm planning is to send a pull request to Dave today and fix these
warnings in the next pull request. Does that sound good?

-- 
Kalle Valo

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

[Stephen Rothwell]

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Hi Kalle,

On Fri, 30 Nov 2018 06:33:47 +0200 Kalle Valo <kvalo@codeaurora.org> wrote:
>
> I take it that -Wimplict-fallthrough is not enabled by default yet? So
> Dave and Linus won't see these warnings?

Correct.

> What I'm planning is to send a pull request to Dave today and fix these
> warnings in the next pull request. Does that sound good?

That sounds fine.

-- 
Cheers,
Stephen Rothwell

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

[Kalle Valo]

Stephen Rothwell <sfr@canb.auug.org.au> writes:

> Hi Kalle,
>
> On Fri, 30 Nov 2018 06:33:47 +0200 Kalle Valo <kvalo@codeaurora.org> wrote:
>>
>> I take it that -Wimplict-fallthrough is not enabled by default yet? So
>> Dave and Linus won't see these warnings?
>
> Correct.
>
>> What I'm planning is to send a pull request to Dave today and fix these
>> warnings in the next pull request. Does that sound good?
>
> That sounds fine.

Great, thanks for the confirmation. I'll then send the pull request
today.

-- 
Kalle Valo

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

[Luciano Coelho]

On Fri, 2018-11-30 at 09:43 +0200, Kalle Valo wrote:
> Stephen Rothwell <sfr@canb.auug.org.au> writes:
> 
> > Hi Kalle,
> > 
> > On Fri, 30 Nov 2018 06:33:47 +0200 Kalle Valo <kvalo@codeaurora.org
> > > wrote:
> > > I take it that -Wimplict-fallthrough is not enabled by default
> > > yet? So
> > > Dave and Linus won't see these warnings?
> > 
> > Correct.
> > 
> > > What I'm planning is to send a pull request to Dave today and fix
> > > these
> > > warnings in the next pull request. Does that sound good?
> > 
> > That sounds fine.
> 
> Great, thanks for the confirmation. I'll then send the pull request
> today.

Just FYI, I enabled this by default in our internal tree so we will
notice when it happens before sending the patch upstream.

--
Cheers,
Luca.

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

[Gustavo A. R. Silva]

On 12/3/18 6:38 AM, Luciano Coelho wrote:
> On Fri, 2018-11-30 at 09:43 +0200, Kalle Valo wrote:
>> Stephen Rothwell <sfr@canb.auug.org.au> writes:
>>
>>> Hi Kalle,
>>>
>>> On Fri, 30 Nov 2018 06:33:47 +0200 Kalle Valo <kvalo@codeaurora.org
>>>> wrote:
>>>> I take it that -Wimplict-fallthrough is not enabled by default
>>>> yet? So
>>>> Dave and Linus won't see these warnings?
>>>
>>> Correct.
>>>
>>>> What I'm planning is to send a pull request to Dave today and fix
>>>> these
>>>> warnings in the next pull request. Does that sound good?
>>>
>>> That sounds fine.
>>
>> Great, thanks for the confirmation. I'll then send the pull request
>> today.
> 
> Just FYI, I enabled this by default in our internal tree so we will
> notice when it happens before sending the patch upstream.
> 

That's really great.

Thanks, Luca
--
Gustavo

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

[Stephen Rothwell]

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Hi all,

On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell <sfr@canb.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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Re: linux-next: build warnings after merge of the wireless-drivers-next tree

[Kalle Valo]

Stephen Rothwell <sfr@canb.auug.org.au> writes:

> On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell <sfr@canb.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.

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

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

[Grumbach, Emmanuel]

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

Just sent a patch.

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

[Luca Coelho]

On Wed, 2018-12-19 at 08:31 +0000, Grumbach, Emmanuel wrote:
> > Stephen Rothwell <sfr@canb.auug.org.au> writes:
> > 
> > > On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell
> > <sfr@canb.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.
> > 
> > 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?
> > 
> 
> Just sent a patch.

Those patches were still queued for upstreaming and I didn't think they
were that urgent, so I didn't pick them.

--
Luca.

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

[Kalle Valo]

"Grumbach, Emmanuel" <emmanuel.grumbach@intel.com> writes:

>> 
>> Stephen Rothwell <sfr@canb.auug.org.au> writes:
>> 
>> > On Fri, 30 Nov 2018 12:05:55 +1100 Stephen Rothwell
>> <sfr@canb.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.
>> 
>> 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?
>> 
>
> Just sent a patch.

I see it thanks:

https://patchwork.kernel.org/patch/10736967/

I'll try to get it to tomorrow's linux-next build.

-- 
Kalle Valo