linux-kernel - Re: [PATCH v2 1/4] s390/cio: Make struct css

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Date:   Tue, 06 Jul 2021 17:58:25 +0200
From:   Cornelia Huck <cohuck@...hat.com>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     kernel@...gutronix.de, Vineeth Vijayan <vneethv@...ux.ibm.com>,
        Peter Oberparleiter <oberpar@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Christian Borntraeger <borntraeger@...ibm.com>,
        Eric Farman <farman@...ux.ibm.com>,
        Matthew Rosato <mjrosato@...ux.ibm.com>,
        Halil Pasic <pasic@...ux.ibm.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH v2 1/4] s390/cio: Make struct css_driver::remove return
 void

On Tue, Jul 06 2021, Uwe Kleine-König <u.kleine-koenig@...gutronix.de> wrote:

> The driver core ignores the return value of css_remove()
> (because there is only little it can do when a device disappears) and
> there are no pci_epf_drivers with a remove callback.

s/pci_epf/css/

>
> So make it impossible for future drivers to return an unused error code
> by changing the remove prototype to return void.
>
> The real motivation for this change is the quest to make struct
> bus_type::remove return void, too.
>
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
> ---
>  drivers/s390/cio/chsc_sch.c     | 3 +--
>  drivers/s390/cio/css.c          | 7 ++++---
>  drivers/s390/cio/css.h          | 2 +-
>  drivers/s390/cio/device.c       | 5 ++---
>  drivers/s390/cio/eadm_sch.c     | 4 +---
>  drivers/s390/cio/vfio_ccw_drv.c | 3 +--
>  6 files changed, 10 insertions(+), 14 deletions(-)

Reviewed-by: Cornelia Huck <cohuck@...hat.com>