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

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Message-ID: <875z5kwgkx.fsf@mpe.ellerman.id.au>
Date:   Wed, 02 Dec 2020 23:14:06 +1100
From:   Michael Ellerman <mpe@...erman.id.au>
To:     Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Takashi Iwai <tiwai@...e.de>
Cc:     Geoff Levand <geoff@...radead.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, 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>,
        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

Uwe Kleine-König <u.kleine-koenig@...gutronix.de> writes:
> Hello Michael,
>
> On Sat, Nov 28, 2020 at 09:48:30AM +0100, Takashi Iwai wrote:
>> On Thu, 26 Nov 2020 17:59:50 +0100,
>> 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>
>> 
>> For the sound bit:
>> Acked-by: Takashi Iwai <tiwai@...e.de>
>
> assuming that you are the one who will apply this patch: Note that it
> depends on patch 1 that Takashi already applied to his tree. So you
> either have to wait untils patch 1 appears in some tree that you merge
> before applying, or you have to take patch 1, too. (With Takashi
> optinally dropping it then.)

Thanks. I've picked up both patches.

If Takashi doesn't want to rebase his tree to drop patch 1 that's OK, it
will just arrive in mainline via two paths, but git should handle it.

cheers