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Wed, 12 Aug 2026 14:39:43 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id 5gF6IK+FfGqRKQAAD6G6ig (envelope-from ); Wed, 12 Aug 2026 14:39:43 +0000 Date: Wed, 12 Aug 2026 16:39:43 +0200 Message-ID: <878q6bz9lc.wl-tiwai@suse.de> From: Takashi Iwai To: HyeongJun An Cc: Takashi Iwai , Jaroslav Kysela , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Takashi Iwai Subject: Re: [PATCH] ALSA: seq: Drop the dead struct snd_seq_event_bounce In-Reply-To: <20260812141506.4016387-1-sammiee5311@gmail.com> References: <87se4jze5c.wl-tiwai@suse.de> <20260812141506.4016387-1-sammiee5311@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-3.30 / 50.00]; BAYES_HAM(-3.00)[100.00%]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; FREEMAIL_TO(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; ARC_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; TO_MATCH_ENVRCPT_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[6]; FROM_EQ_ENVFROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:mid,suse.de:email,imap1.dmz-prg2.suse.org:helo] X-Spam-Flag: NO X-Spam-Score: -3.30 X-Spam-Level: On Wed, 12 Aug 2026 16:15:06 +0200, HyeongJun An wrote: > > The struct describes a bounce payload of an error code followed by the > original event and its external data. No kernel has ever sent that. > Before commit efc86691e4d8 ("ALSA: seq: Fix kernel heap address leak in > bounce_error_event()") the kernel emitted no SNDRV_SEQ_EVENT_BOUNCE at > all, and since then it sends the event record alone. > > Nothing has ever read it either. Its only accessor, > snd_seq_event_bounce_ext_data(), has had no caller for the whole git > history, and it did not even compile until commit c7e0b5bf9fff ("[ALSA] > Remove xxx_t typedefs: Sequencer") incidentally repaired the type name > it referred to, three years after the git import. Drop the accessor > along with the struct. > > This removes a definition from a UAPI header. Since no kernel ever > produced the layout, nothing can have parsed it, but a program that > merely names the type will need to stop. > > Suggested-by: Takashi Iwai > Assisted-by: Claude:claude-opus-5 > Signed-off-by: HyeongJun An Applied to for-next branch now. Thanks. Takashi