netdev - Re: [PATCH 2/2] powerpc/ps3: make system bus's remove and shutdown callbacks return void

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Date:   Fri, 27 Nov 2020 11:39:12 -0800
From:   Geoff Levand <geoff@...radead.org>
To:     Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Jens Axboe <axboe@...nel.dk>, Jim Paris <jim@...n.com>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Alan Stern <stern@...land.harvard.edu>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev@...ts.ozlabs.org, alsa-devel@...a-project.org,
        linux-block@...r.kernel.org, netdev@...r.kernel.org,
        linux-scsi@...r.kernel.org, linux-usb@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH 2/2] powerpc/ps3: make system bus's remove and shutdown
 callbacks return void

On 11/26/20 8:59 AM, Uwe Kleine-König wrote:
> The driver core ignores the return value of struct device_driver::remove
> because there is only little that can be done. For the shutdown callback
> it's ps3_system_bus_shutdown() which ignores the return value.
> 
> To simplify the quest to make struct device_driver::remove return void,
> let struct ps3_system_bus_driver::remove return void, too. All users
> already unconditionally return 0, this commit makes it obvious that
> returning an error code is a bad idea and ensures future users behave
> accordingly.
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Seems OK with v5.9 on PS3.

Tested by: Geoff Levand <geoff@...radead.org>