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Date:   Tue, 9 Mar 2021 15:54:48 +0100
From:   Greg KH <gregkh@linuxfoundation.org>
To:     =?iso-8859-1?B?Suly9G1l?= Pouiller <jerome.pouiller@silabs.com>
Cc:     devel@driverdev.osuosl.org, linux-kernel@vger.kernel.org,
        Muhammad Usama Anjum <musamaanjum@gmail.com>
Subject: Re: [PATCH] staging: wfx: remove unused included header files
Message-ID: <YEeMOILptrEY2WTV@kroah.com>
References: <20210211143637.GA177425@LEGION>
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 <2505525.pDR9D5mlbe@pc-42>
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On Tue, Mar 09, 2021 at 02:45:56PM +0100, J?r?me Pouiller wrote:
> On Tuesday 9 March 2021 14:07:43 CET Greg KH wrote:
> > On Thu, Mar 04, 2021 at 10:43:45AM +0100, J?r?me Pouiller wrote:
> > > Hello Greg,
> > >
> > > On Tuesday 2 March 2021 16:01:25 CET J?r?me Pouiller wrote:
> > > > Hello Muhammad,
> > > >
> > > > Sorry, I am a bit late for the review of this patch. Thank you for 
> your
> > > > contribution.
> > > >
> > > > On Thursday 11 February 2021 15:36:37 CET Muhammad Usama Anjum 
> wrote:
> > > > >
> > > > > Many header files have been included, but never used. Those 
> header
> > > > > files have been removed.
> > > > >
> > > > > Signed-off-by: Muhammad Usama Anjum <musamaanjum@gmail.com>
> > > > > ---
> > > > >  drivers/staging/wfx/bh.c              | 1 -
> > > > >  drivers/staging/wfx/bh.h              | 4 ----
> > > > >  drivers/staging/wfx/bus.h             | 3 ---
> > > > >  drivers/staging/wfx/bus_sdio.c        | 6 ------
> > > > >  drivers/staging/wfx/bus_spi.c         | 7 -------
> > > > >  drivers/staging/wfx/data_rx.c         | 5 -----
> > > > >  drivers/staging/wfx/data_tx.c         | 5 -----
> > > > >  drivers/staging/wfx/data_tx.h         | 3 ---
> > > > >  drivers/staging/wfx/debug.c           | 6 ------
> > > > >  drivers/staging/wfx/fwio.c            | 2 --
> > > > >  drivers/staging/wfx/hif_api_cmd.h     | 4 ----
> > > > >  drivers/staging/wfx/hif_api_general.h | 9 ---------
> > > > >  drivers/staging/wfx/hif_tx.c          | 4 ----
> > > > >  drivers/staging/wfx/hif_tx_mib.c      | 5 -----
> > > > >  drivers/staging/wfx/hwio.c            | 3 ---
> > > > >  drivers/staging/wfx/hwio.h            | 2 --
> > > > >  drivers/staging/wfx/key.c             | 2 --
> > > > >  drivers/staging/wfx/key.h             | 2 --
> > > > >  drivers/staging/wfx/main.c            | 7 -------
> > > > >  drivers/staging/wfx/main.h            | 3 ---
> > > > >  drivers/staging/wfx/queue.c           | 4 ----
> > > > >  drivers/staging/wfx/queue.h           | 3 ---
> > > > >  drivers/staging/wfx/scan.h            | 2 --
> > > > >  drivers/staging/wfx/sta.c             | 6 ------
> > > > >  drivers/staging/wfx/sta.h             | 2 --
> > > > >  drivers/staging/wfx/traces.h          | 3 ---
> > > > >  drivers/staging/wfx/wfx.h             | 3 ---
> > > > >  27 files changed, 106 deletions(-)
> > > > >
> > > > > diff --git a/drivers/staging/wfx/bh.c b/drivers/staging/wfx/bh.c
> > > > > index ed53d0b45592..cd6bcfdfbe9a 100644
> > > > > --- a/drivers/staging/wfx/bh.c
> > > > > +++ b/drivers/staging/wfx/bh.c
> > > > > @@ -5,7 +5,6 @@
> > > > >   * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
> > > > >   * Copyright (c) 2010, ST-Ericsson
> > > > >   */
> > > > > -#include <linux/gpio/consumer.h>
> > > > >  #include <net/mac80211.h>
> > > >
> > > > Though bh.c refers to gpiod_set_value_cansleep()
> > > >
> > > >
> > > > >  #include "bh.h"
> > > > > diff --git a/drivers/staging/wfx/bh.h b/drivers/staging/wfx/bh.h
> > > > > index 78c49329e22a..92ef3298d4ac 100644
> > > > > --- a/drivers/staging/wfx/bh.h
> > > > > +++ b/drivers/staging/wfx/bh.h
> > > > > @@ -8,10 +8,6 @@
> > > > >  #ifndef WFX_BH_H
> > > > >  #define WFX_BH_H
> > > > >
> > > > > -#include <linux/atomic.h>
> > > > > -#include <linux/wait.h>
> > > > > -#include <linux/workqueue.h>
> > > > > -
> > > > >  struct wfx_dev;
> > > > >
> > > > >  struct wfx_hif {
> > > >
> > > > Ditto, bh.h refers to atomic_t, struct work_struct and struct
> > > > completion. If you try to compile bh.h alone (with something like
> > > > gcc -xc .../bh.h) it won't work.
> > > >
> > > > Maybe it works now because we are lucky in the order the headers 
> are
> > > > included, but I think it is not sufficient.
> > > >
> > > > [... same problem repeats multiple times in the following ...]
> > > >
> > >
> > > Greg, if nobody has any opinion on that, I think that this patch 
> should
> > > be reverted.
> > 
> > Nothing is breaking, why should it be reverted?
> 
> Because it is less maintainable?
>  
> > You never build a .h file alone :)
> 
> hmmm... notwithstanding, I thing that the code should not depend on the 
> order the headers are included. You don't?
>  
> > Anyway, sure, I'll revert it, what is the commit id?
> 
> commit 314fd52f01ea "staging: wfx: remove unused included header files"

Now reverted, thanks.

greg k-h