linux-kernel - Re: [PATCH v1 01/12] powerpc/pseries: CMM: Implement release() function for sysfs device

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Date:   Thu, 14 Nov 2019 20:08:16 +1100 (AEDT)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     David Hildenbrand <david@...hat.com>, linux-kernel@...r.kernel.org
Cc:     David Hildenbrand <david@...hat.com>,
        Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-mm@...ck.org, Paul Mackerras <paulus@...ba.org>,
        Allison Randal <allison@...utok.net>,
        Arun KS <arunks@...eaurora.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linuxppc-dev@...ts.ozlabs.org,
        Thomas Gleixner <tglx@...utronix.de>,
        Vlastimil Babka <vbabka@...e.cz>
Subject: Re: [PATCH v1 01/12] powerpc/pseries: CMM: Implement release() function for sysfs device

On Thu, 2019-10-31 at 14:29:22 UTC, David Hildenbrand wrote:
> When unloading the module, one gets
> [  548.188594] ------------[ cut here ]------------
> [  548.188596] Device 'cmm0' does not have a release() function, it is brok=
> en and must be fixed. See Documentation/kobject.txt.
> [  548.188622] WARNING: CPU: 0 PID: 19308 at drivers/base/core.c:1244 .devi=
> ce_release+0xcc/0xf0
> ...
> 
> We only have on static fake device. There is nothing to do when
> releasing the device (via cmm_exit).
> 
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Vlastimil Babka <vbabka@...e.cz>
> Cc: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
> Cc: Allison Randal <allison@...utok.net>
> Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Arun KS <arunks@...eaurora.org>
> Signed-off-by: David Hildenbrand <david@...hat.com>

Patches 1-10 applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/7d8212747435c534c8d564fbef4541a463c976ff

cheers