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Mon, 30 Mar 2026 07:36:19 +0000 Date: Mon, 30 Mar 2026 09:36:19 +0200 Message-ID: <87o6k5u5u4.wl-tiwai@suse.de> From: Takashi Iwai To: =?ISO-8859-1?Q?C=E1ssio?= Gabriel Cc: Johannes Berg , Takashi Iwai , Jaroslav Kysela , linuxppc-dev@lists.ozlabs.org, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH] ALSA: aoa: i2sbus: fix OF node lifetime handling In-Reply-To: <20260330-aoa-i2sbus-ofnode-lifetime-v1-1-51c309f4ff06@gmail.com> References: <20260330-aoa-i2sbus-ofnode-lifetime-v1-1-51c309f4ff06@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Spamd-Result: default: False [-7.30 / 50.00]; REPLY(-4.00)[]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; RCVD_VIA_SMTP_AUTH(0.00)[]; MIME_TRACE(0.00)[0:+]; FREEMAIL_TO(0.00)[gmail.com]; ARC_NA(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RCPT_COUNT_SEVEN(0.00)[8]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,suse.de:mid] On Mon, 30 Mar 2026 06:00:34 +0200, Cássio Gabriel wrote: > > i2sbus_add_dev() keeps the matched "sound" child pointer after > for_each_child_of_node() has dropped the iterator reference. Take an > extra reference before saving that node and drop it after the > layout-id/device-id lookup is complete. > > The function also stores np in dev->sound.ofdev.dev.of_node without > taking a reference for the embedded soundbus device. Since i2sbus > overrides the embedded platform device release callback, balance that > reference explicitly in the local error path and in i2sbus_release_dev(). > > Fixes: f3d9478b2ce4 ("[ALSA] snd-aoa: add snd-aoa") > Cc: stable@vger.kernel.org > Signed-off-by: Cássio Gabriel Applied to for-next branch now. Thanks. Takashi