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b=4KHo0RLN2Zd+mITkFRx13XolsabDuMShGN2ihooQEnbUOYhoitU62eflDNxuDdmU0b2NH1 0+UbF6kR8rscKjCQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 0158C593AF; Tue, 21 Apr 2026 08:09:20 +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 3iqMOrAw52kyUQAAD6G6ig (envelope-from ); Tue, 21 Apr 2026 08:09:20 +0000 Date: Tue, 21 Apr 2026 10:09:20 +0200 Message-ID: <87v7dkag5r.wl-tiwai@suse.de> From: Takashi Iwai To: =?ISO-8859-1?Q?C=E1ssio?= Gabriel Cc: Takashi Iwai , Chris J Arges , Detlef Urban , Jaroslav Kysela , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 0/4] usb-audio: fix mixer write failure handling In-Reply-To: <20260419-usb-write-error-propagation-v1-0-5a3bd4a673ae@gmail.com> References: <20260419-usb-write-error-propagation-v1-0-5a3bd4a673ae@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: stable@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=ISO-8859-1 Content-Transfer-Encoding: 8bit X-Rspamd-Action: no action X-Rspamd-Server: rspamd2.dmz-prg2.suse.org X-Spamd-Result: default: False [-3.51 / 50.00]; BAYES_HAM(-3.00)[99.99%]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_CONTAINS_FROM(1.00)[]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-0.999]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; TO_DN_SOME(0.00)[]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FREEMAIL_TO(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; FUZZY_RATELIMITED(0.00)[rspamd.com]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; DWL_DNSWL_BLOCKED(0.00)[suse.de:dkim]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCPT_COUNT_SEVEN(0.00)[8]; DKIM_TRACE(0.00)[suse.de:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.de:dkim,suse.de:mid] X-Rspamd-Queue-Id: 3C6C15BCC5 X-Spam-Flag: NO X-Spam-Score: -3.51 X-Spam-Level: On Sun, 19 Apr 2026 22:30:28 +0200, Cássio Gabriel wrote: > > This series fixes usb-audio mixer put() paths that currently report > success even when the underlying device write fails. > > The issue exists in the generic mixer core callbacks, the Scarlett > Gen1 enum path, and several Tascam US-16x08 put() callbacks. > > The US-16x08 EQ and compressor callbacks have an additional bug: they > update their software shadow state before sending the USB write, so a > failed transfer can leave later get() results out of sync with the > hardware state. > > The series is split into four patches: > - propagate write failures in the generic mixer core callbacks > - fix the Scarlett Gen1 enum callback > - propagate write failures in the simple US-16x08 put() callbacks > - commit the US-16x08 EQ and compressor shadow state only after a > successful write > > Successful writes are unchanged. Failed writes are now reported > correctly, and the US-16x08 shadow state remains coherent with the > hardware after write errors. > > Signed-off-by: Cássio Gabriel As this might influence on the actual device behavior significantly, and it's in a merge window, I postpone the series for 7.2. thanks, Takashi