linux-kernel - Re: [PATCH v5 2/6] staging: octeon: remove typedef in enum cvmx_helper_interface_mode

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Date:   Mon, 30 Oct 2023 07:10:42 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Oliver Crumrine <ozlinux@...mail.com>, colin.i.king@...il.com,
        sumitraartsy@...il.com, u.kleine-koenig@...gutronix.de,
        geert@...ux-m68k.org, linux-kernel@...r.kernel.org,
        linux-staging@...ts.linux.dev
Subject: Re: [PATCH v5 2/6] staging: octeon: remove typedef in enum
 cvmx_helper_interface_mode_t

On 10/29/23 23:24, Greg KH wrote:
> On Sun, Oct 29, 2023 at 10:17:21AM -0700, Guenter Roeck wrote:
>> On Mon, Aug 28, 2023 at 11:39:07AM -0400, Oliver Crumrine wrote:
>>> Remove typedef in enum cvmx_helper_interface_mode_t, and rename all instances
>>> to cvmx_helper_interface_mode
>>>
>>> Signed-off-by: Oliver Crumrine <ozlinux@...mail.com>
>>
>> In linux-next:
>>
>> Building mips:cavium_octeon_defconfig ... failed
>> --------------
>> Error log:
>> drivers/staging/octeon/ethernet.c: In function 'cvm_oct_common_get_stats':
>> drivers/staging/octeon/ethernet.c:204:37: error: storage size of 'rx_status' isn't known
>>    204 |         struct cvmx_pip_port_status rx_status;
>>        |                                     ^~~~~~~~~
>> drivers/staging/octeon/ethernet.c:205:37: error: storage size of 'tx_status' isn't known
>>    205 |         struct cvmx_pko_port_status tx_status;
>>        |                                     ^~~~~~~~~
>> drivers/staging/octeon/ethernet.c:205:37: warning: unused variable 'tx_status' [-Wunused-variable]
>> drivers/staging/octeon/ethernet.c:204:37: warning: unused variable 'rx_status' [-Wunused-variable]
>>    204 |         struct cvmx_pip_port_status rx_status;
>>        |                                     ^~~~~~~~~
>> drivers/staging/octeon/ethernet.c: In function 'cvm_oct_probe':
>> drivers/staging/octeon/ethernet.c:801:22: error: variable 'imode' has initializer but incomplete type
>>    801 |                 enum cvmx_helper_interface_mode imode =
>>        |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/staging/octeon/ethernet.c:801:49: error: storage size of 'imode' isn't known
>>    801 |                 enum cvmx_helper_interface_mode imode =
>>        |                                                 ^~~~~
>> drivers/staging/octeon/ethernet.c:801:49: warning: unused variable 'imode' [-Wunused-variable]
>>
>> Bisect points to this patch. Bisect log attached.
>>
>> As usual, my apologies for the noise if this has already been reported
>> and/or fixed.
> 
> It has not been reported, thanks for it, I'll go revert the offending
> commits.  And I need to figure out how to build this driver better, I
> get no build-failures from anyone for it when stuff like this happens,
> odd...
> 

This is kind of chronic. One really has to build mips:cavium_octeon_defconfig
to find Octeon related problems. The all{mod,yes}_defconfig builds don't build
that code.

Guenter