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Mon, 9 Nov 2026 14:08:30 +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 q9G6It7T8WojVAAAD6G6ig (envelope-from ); Mon, 09 Nov 2026 14:08:30 +0000 Date: Mon, 09 Nov 2026 15:08:30 +0100 Message-ID: <87se1aumg1.wl-tiwai@suse.de> From: Takashi Iwai To: Xinyu Wei Cc: Jaroslav Kysela , linux-kernel@vger.kernel.org, linux-sound@vger.kernel.org, Takashi Iwai Subject: Re: [PATCH 0/2] ALSA: usb-audio: second configuration of the Steinberg UR22C In-Reply-To: <20261108130303.387288-1-xinyuwei1024@gmail.com> References: <20261108130303.387288-1-xinyuwei1024@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-12.51 / 50.00]; SUSE_INTERNAL_BYPASS(-9.00)[]; BAYES_HAM(-3.00)[100.00%]; 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)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_TO(0.00)[gmail.com]; 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)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_TLS_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.de:dkim,imap1.dmz-prg2.suse.org:rdns,imap1.dmz-prg2.suse.org:helo]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[suse.de:+] X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Action: no action X-Spam-Flag: NO X-Spam-Score: -12.51 X-Spam-Level: X-Rspamd-Queue-Id: 005AC1F7BE On Sun, 08 Nov 2026 14:03:01 +0100, Xinyu Wei wrote: > > The Steinberg UR22C exposes two USB configurations: configuration 1 is > class-compliant (2 playback / 4 capture channels), while configuration 2 > is UAC2 behind bInterfaceClass 0xFF (6 playback / 8 capture channels and > two MIDI interfaces). Selecting configuration 2 on a stock kernel leaves > interfaces 0-2 unbound and registers no PCM. > > Patch 1 adds a composite quirk entry for configuration 2's vendor-class > interfaces. Patch 2 fixes a bogus bmFormats (0xffffffff) in > configuration 2's capture descriptor so opening capture as FLOAT_LE does > not lock out playback via implicit feedback sync. > > Xinyu Wei (2): > ALSA: usb-audio: name the interfaces of the Steinberg UR22C > ALSA: usb-audio: fix the format bits of the Steinberg UR22C Applied both to for-next branch now. Thanks. Takashi