Re: [PATCH v2 00/24] Set 3: Fix another set of SCSI related W=1 warnings

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On Wed, 15 Jul 2020, Martin K. Petersen wrote:

> On Mon, 13 Jul 2020 08:59:37 +0100, Lee Jones wrote:
> 
> > This set is part of a larger effort attempting to clean-up W=1
> > kernel builds, which are currently overwhelmingly riddled with
> > niggly little warnings.
> > 
> > Slowly working through the SCSI related ones.  There are many.
> > 
> > This brings the total of W=1 SCSI wanings from 1690 in v5.8-rc1 to 1109.
> > 
> > [...]
> 
> Applied to 5.9/scsi-queue. Thanks for cleaning things up!
> 
> I do think that in general it makes little sense for low-level drivers
> to document internal functions using kerneldoc. As a general approach
> I would prefer to just switch drivers to '/*' or to remove stale
> comments instead of trying to keep up with the "docrot" warnings.
> 
> kerneldoc cleanups are great for functions that actually have more
> than one user (core code, libraries, common code used by multiple
> drivers, etc.). Whereas for driver internals I would much rather
> emphasize function arguments with well-chosen, descriptive names
> instead of a kerneldoc "@p: pointer to a foobar" comment that will
> inevitably become stale next time an interface changes.

I'm inclined to agree.

There is even a script to list the 'offenders':

 `scripts/find-unused-docs.sh`

An effort to demote all unused docs is likely to be somewhat more
controversial than one to re-sync the attribute/parameter
descriptions though.  I choose the path of least resistance for my
clean-up effort.  Nothing stopping us having another pass once they
are all re-synced.

> [01/24] scsi: aacraid: Repair two kerneldoc headers
>         https://git.kernel.org/mkp/scsi/c/b115958d91f5
> [02/24] scsi: aacraid: Fix a few kerneldoc issues
>         https://git.kernel.org/mkp/scsi/c/cf93fffac261
> [03/24] scsi: aacraid: Fix logical bug when !DBG
>         https://git.kernel.org/mkp/scsi/c/2fee77e5b820
> [04/24] scsi: aacraid: Remove unused variable 'status'
>         https://git.kernel.org/mkp/scsi/c/0123c7c62d6c
> [05/24] scsi: aacraid: Demote partially documented function header
>         https://git.kernel.org/mkp/scsi/c/71aa4d3e0e78
> [06/24] scsi: aic94xx: Document 'lseq' and repair asd_update_port_links() header
>         https://git.kernel.org/mkp/scsi/c/966fdadf6fea
> [07/24] scsi: aacraid: Fix a bunch of function header issues
>         https://git.kernel.org/mkp/scsi/c/f1134f0eb184
> [08/24] scsi: aic94xx: Fix a couple of formatting and bitrot issues
>         https://git.kernel.org/mkp/scsi/c/d2e510505006
> [09/24] scsi: aacraid: Fill in the very parameter descriptions for rx_sync_cmd()
>         https://git.kernel.org/mkp/scsi/c/ae272a95133a
> [10/24] scsi: pm8001: Provide descriptions for the many undocumented 'attr's
>         https://git.kernel.org/mkp/scsi/c/e1c3e0f8a2ae
> [11/24] scsi: ipr: Fix a mountain of kerneldoc misdemeanours
>         https://git.kernel.org/mkp/scsi/c/a96099e2c164
> [12/24] scsi: virtio_scsi: Demote seemingly unintentional kerneldoc header
>         https://git.kernel.org/mkp/scsi/c/e31f2661ff41
> [13/24] scsi: ipr: Remove a bunch of set but checked variables
>         https://git.kernel.org/mkp/scsi/c/4dc833999e37
> [14/24] scsi: ipr: Fix struct packed-not-aligned issues
>         https://git.kernel.org/mkp/scsi/c/f3bdc59f9b11
> [15/24] scsi: myrs: Demote obvious misuse of kerneldoc to standard comment blocks
>         https://git.kernel.org/mkp/scsi/c/8a692fdb1d04
> [17/24] scsi: be2iscsi: Fix API/documentation slip
>         https://git.kernel.org/mkp/scsi/c/abad069ef0da
> [18/24] scsi: be2iscsi: Fix misdocumentation of 'pcontext'
>         https://git.kernel.org/mkp/scsi/c/dbc019a48f97
> [19/24] scsi: be2iscsi: Add missing function parameter description
>         https://git.kernel.org/mkp/scsi/c/7405edfdfb96
> [20/24] scsi: lpfc: Correct some pretty obvious misdocumentation
>         https://git.kernel.org/mkp/scsi/c/09d99705b5d2
> [21/24] scsi: aic7xxx: Remove unused variable 'ahd'
>         https://git.kernel.org/mkp/scsi/c/91b6e191c4dc
> [22/24] scsi: aic7xxx: Remove unused variables 'wait' and 'paused'
>         https://git.kernel.org/mkp/scsi/c/532d56c631f1
> [23/24] scsi: aic7xxx: Fix 'amount_xferred' set but not used issue
>         https://git.kernel.org/mkp/scsi/c/42b840bcfc16
> 

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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