linux-kernel - Re: [PATCH v1 0/2] isa: Make the remove callback for isa drivers return void

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Message-ID: <YAokZMNkgVfJ+csC@shinobu>
Date:   Fri, 22 Jan 2021 10:03:32 +0900
From:   William Breathitt Gray <vilhelm.gray@...il.com>
To:     Uwe Kleine-König <uwe@...ine-koenig.org>
Cc:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Pau Oliva Fora <pof@...ack.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Wolfgang Grandegger <wg@...ndegger.com>,
        Marc Kleine-Budde <mkl@...gutronix.de>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Matthew Wilcox <willy@...radead.org>,
        Hannes Reinecke <hare@...e.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Finn Thain <fthain@...egraphics.com.au>,
        Michael Schmitz <schmitzmic@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, linux-watchdog@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org,
        linux-input@...r.kernel.org, linux-media@...r.kernel.org,
        linux-can@...r.kernel.org, netdev@...r.kernel.org,
        linux-scsi@...r.kernel.org, alsa-devel@...a-project.org
Subject: Re: [PATCH v1 0/2] isa: Make the remove callback for isa drivers
 return void

On Thu, Jan 21, 2021 at 09:48:10PM +0100, Uwe Kleine-König wrote:
> Hello,
> 
> as described in the commit log of the 2nd patch returning an error code
> from a bus' remove callback doesn't make any difference as the driver
> core ignores it and still considers the device removed.
> 
> So change the remove callback to return void to not give driver authors
> an incentive to believe they could return an error.
> 
> There is only a single isa driver in the tree (assuming I didn't miss
> any) that has a remove callback that can return a non zero return code.
> This is "fixed" in the first patch, to make the second patch more
> obviously correct.
> 
> Best regards
> Uwe
> 
> Uwe Kleine-König (2):
>   watchdog: pcwd: drop always-false if from remove callback
>   isa: Make the remove callback for isa drivers return void
> 
>  drivers/base/isa.c                   | 2 +-
>  drivers/i2c/busses/i2c-elektor.c     | 4 +---
>  drivers/i2c/busses/i2c-pca-isa.c     | 4 +---
>  drivers/input/touchscreen/htcpen.c   | 4 +---
>  drivers/media/radio/radio-sf16fmr2.c | 4 +---
>  drivers/net/can/sja1000/tscan1.c     | 4 +---
>  drivers/net/ethernet/3com/3c509.c    | 3 +--
>  drivers/scsi/advansys.c              | 3 +--
>  drivers/scsi/aha1542.c               | 3 +--
>  drivers/scsi/fdomain_isa.c           | 3 +--
>  drivers/scsi/g_NCR5380.c             | 3 +--
>  drivers/watchdog/pcwd.c              | 7 +------
>  include/linux/isa.h                  | 2 +-
>  sound/isa/ad1848/ad1848.c            | 3 +--
>  sound/isa/adlib.c                    | 3 +--
>  sound/isa/cmi8328.c                  | 3 +--
>  sound/isa/cmi8330.c                  | 3 +--
>  sound/isa/cs423x/cs4231.c            | 3 +--
>  sound/isa/cs423x/cs4236.c            | 3 +--
>  sound/isa/es1688/es1688.c            | 3 +--
>  sound/isa/es18xx.c                   | 3 +--
>  sound/isa/galaxy/galaxy.c            | 3 +--
>  sound/isa/gus/gusclassic.c           | 3 +--
>  sound/isa/gus/gusextreme.c           | 3 +--
>  sound/isa/gus/gusmax.c               | 3 +--
>  sound/isa/gus/interwave.c            | 3 +--
>  sound/isa/msnd/msnd_pinnacle.c       | 3 +--
>  sound/isa/opl3sa2.c                  | 3 +--
>  sound/isa/opti9xx/miro.c             | 3 +--
>  sound/isa/opti9xx/opti92x-ad1848.c   | 3 +--
>  sound/isa/sb/jazz16.c                | 3 +--
>  sound/isa/sb/sb16.c                  | 3 +--
>  sound/isa/sb/sb8.c                   | 3 +--
>  sound/isa/sc6000.c                   | 3 +--
>  sound/isa/sscape.c                   | 3 +--
>  sound/isa/wavefront/wavefront.c      | 3 +--
>  36 files changed, 36 insertions(+), 79 deletions(-)
> 
> 
> base-commit: 5a158981aafa7f29709034b17bd007b15cb29983
> -- 
> 2.29.2

Acked-by: William Breathitt Gray <vilhelm.gray@...il.com>

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