Re: [PATCH -next] Documentation: fix firewire.rst ABI file path error

[Akira Yokosawa <akiyks@gmail.com>]

(+Cc: Takashi)
On Mon, 17 Jan 2022 22:05:21 -0800,
Randy Dunlap wrote:
> 
> On 1/17/22 20:08, Akira Yokosawa wrote:
>> On Mon, 17 Jan 2022 17:05:17 -0800,
>> Randy Dunlap wrote:
>>> Adjust the path of the ABI files for firewire.rst to prevent a
>>> documentation build error. Prevents this problem:
>>>
>>> Sphinx parallel build error:
>>> docutils.utils.SystemMessage: /work/lnx/next/linux-next-20220117/Documentation/driver-api/firewire.rst:22: (SEVERE/4) Problems with "include" directive path:
>>> InputError: [Errno 2] No such file or directory: '../Documentation/driver-api/ABI/stable/firewire-cdev'.
>>>
>>> Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
>>> Cc: Jonathan Corbet <corbet@lwn.net>
>>> Cc: linux-doc@vger.kernel.org
>>> Cc: Stephen Rothwell <sfr@canb.auug.org.au>
>>> Cc: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
>>> ---
>>> I don't see what is causing this problem...
>>
>> Randy, did you run "make SPHINXDIRS=driver-api htmldocs"?
> 
> Yes.
> Does that cause a problem when just "make htmldocs" does not?

No, that should not cause such a problem.

https://docutils.sourceforge.io/docs/ref/rst/directives.html#include
says (emphasis by me):

    The "include" directive reads a text file. The directive argument
    is the path to the file to be included, *relative* to the document
    containing the directive. 

So I think your patch is the right fix.
You might like to add:

Fixes: 2f4830ef96d2 ("FireWire: add driver-api Introduction section")

And please feel free to add:

Tested-by: Akira Yokosawa <akiyks@gmail.com>

        Thanks, Akira

> 
> thanks.
> 
>> I remember seeing similar errors with v5.14 or v5.15.
>> So I don't think this is a new issue.
>>
>> Without "SPHINXDIRS=driver-api", I don't get this error on -next.
>>
>> I didn't report it at the time as I was not sure it was expected
>> or not.
>>
>>         Thanks, Akira
>>
>>>
>>>  Documentation/driver-api/firewire.rst |    4 ++--
>>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>>
>>> --- linux-next-20220117.orig/Documentation/driver-api/firewire.rst
>>> +++ linux-next-20220117/Documentation/driver-api/firewire.rst
>>> @@ -19,7 +19,7 @@ of kernel interfaces is available via ex
>>>  Firewire char device data structures
>>>  ====================================
>>>  
>>> -.. include:: /ABI/stable/firewire-cdev
>>> +.. include:: ../ABI/stable/firewire-cdev
>>>      :literal:
>>>  
>>>  .. kernel-doc:: include/uapi/linux/firewire-cdev.h
>>> @@ -28,7 +28,7 @@ Firewire char device data structures
>>>  Firewire device probing and sysfs interfaces
>>>  ============================================
>>>  
>>> -.. include:: /ABI/stable/sysfs-bus-firewire
>>> +.. include:: ../ABI/stable/sysfs-bus-firewire
>>>      :literal:
>>>  
>>>  .. kernel-doc:: drivers/firewire/core-device.c
>>
>