From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 24E7B3EB809 for ; Fri, 27 Mar 2026 13:42:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774618927; cv=none; b=k0CU6Ogx/ThSrU1T6/szyaIz0LwZ15zkIQOpPrtJjgPN36My0Ype2/EoPNwDduH8BGRMrMKgvkM2ulLM9oLQ69dEZcEEnCt+tnQGYuuMRReiv5R5xRU+RE4iVlmcACXFGJ8zZZHmsqjJSqH4p+L8cN/0yNPCJVoXf9uHASlDppw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774618927; c=relaxed/simple; bh=Ox+qrB5YDGUO/XPQDjXf8/8oRKmaK1JQE7MGbQk10Oo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=qIglt33dRkVwRMAIXfE9hzqml6ZUEm3iDNr/0q474RPS/L4XhkLvX2dFI2y2rQ+qT+CujQRl4m0lk79RH9Kf/+BcabnHS/cGygNdjmYvZUlWMOA2zwXtKzCl+TrydEooTN6qDzVZviUvszoFD88EKxlH+tXJ5Q4fCDJEtzOxDeA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=As05xZkP; arc=none smtp.client-ip=209.85.128.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="As05xZkP" Received: by mail-wm1-f41.google.com with SMTP id 5b1f17b1804b1-486ff3a0fc1so20951895e9.2 for ; Fri, 27 Mar 2026 06:42:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774618924; x=1775223724; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=on6G/EASuxN7jWALPPtJ63hmpgur/wp36mOVxcX27EY=; b=As05xZkPRHkYVAjtEzgSw5/y/cYquPAKNvPnYGat6fHZEU+vbfCdMdnc897fAcmYvI Wkoo+ntwAiJTrAsK3vSqMQrs67kazxijqrqWbORo5u6/7rCVHl7T1xJgBuZUgikMu/qs CfQ0vUv8CSKp/ha0liNJTar1CKodCkxm5d8XAf0C7GIn7mqYuMbw5b1DYl+HbMuZUZYV Q5XWaIt1X1FZjADaoiOG6j8+/8rz9iLNsGJ0/JES2HbrOg8lk4JpDACaTIRbUvZjHJIQ K8iNnl1uymrkS8T25QmXmeJ0H15kgksr4u3S8stWR+brgjPKJXXNJdVJz+gPwPp4HLNI 2Suw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774618924; x=1775223724; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=on6G/EASuxN7jWALPPtJ63hmpgur/wp36mOVxcX27EY=; b=e/VqogtcVoF7CzscuDkb/UmXaInnSOuRG4b0mPqLqnhsZwznQ0heVvIlw8cxF7yFSe yEd0VHVu+zC0TYmdLYVK7q5ZdkxMc/xXyYhLDzYn+nP3BISxNtgM1D32OmqTlF+hne0t IGD4R3jUf19jtILH1SDFBIi3rWEE+Ij5Au0cBOy0ujnkO3wo83pHX5kDWZRCsdmai1FF Bo+1E2bZWh4wGrDqQfi1F6LvURiy9+HFOWUcLZ4PuXlRD2Tcz92stKYOeK4IEADkComz eWoYMLAYUdue2n/+q5DuncwyLVGiPUd+NrKp2iE/7SiDHfCG1plfr7cZBR1RVAFM+tGR hNWw== X-Gm-Message-State: AOJu0YzD+XQ8ydxU6o8DQeHW4FUNG1T7D6zVqfrtDIiT8bq04Y5VO50W k/aQoSBOh8vPl522ieduJXUnXJo03D665Z2w2r2RhYZnlgMPpWb6SJa/9Vf6YnCN X-Gm-Gg: ATEYQzywgDRnrPj4UNFJorcW/il4sObqUNMDa8lHW8NlEPGdfphs1i2jxlRod1IdAiO AP+XBigWPy5AVvQRKZ5jZ/iyxh6sc+cRyLBQPvmH3zQ8rXSQ2xkWAbDmXAloO/sGumHEc1Q2Zx1 xrOyOpg9bzLnusORv8ie0wE3YxjUF73tHM5E97zpPmqotQR+0zTroj5J5TiT8W0xvx6QFn+QO0r ru5ut+DIrD6MlWuTg25B9iXlHHlp/wDpcj0KGH3FWGTHiauT/oFbR9st25F1kTHmkMwfa2fR7ud j3rM4GXK32CgcsEWVpbAe6P6O0LU6O72Pd76gjEJJkKlRQRkDsp3M5oj7MVDNS/o2O1bI/3go2m dYqXXRx7VuumVeDSkxp7i8ZtTXxgEHlsfCw8wFvldshx1K9LibdTT+6U/IRQdvu26Gy91fRao9U u2/jUaeJiAe3r11+1b4m6A2a2wra/wcZAt7s0p X-Received: by 2002:a05:600c:a31b:b0:487:716:2fa2 with SMTP id 5b1f17b1804b1-48727ec3c1dmr35473225e9.16.1774618924289; Fri, 27 Mar 2026 06:42:04 -0700 (PDT) Received: from linux-workstation.localnet ([5.133.45.75]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48722c9f0afsm170597795e9.10.2026.03.27.06.42.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Mar 2026 06:42:03 -0700 (PDT) From: Phil Willoughby To: Takashi Iwai Cc: "linux-sound@vger.kernel.org" Subject: Re: USB device with more than 32 channels Date: Fri, 27 Mar 2026 13:42:03 +0000 Message-ID: <2026703.7Z3S40VBb9@linux-workstation> In-Reply-To: <87v7fjbsxm.wl-tiwai@suse.de> References: <87v7fjbsxm.wl-tiwai@suse.de> Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="utf-8" On Thursday, 26 February 2026 12:17:09 Greenwich Mean Time Takashi Iwai wrote: > The current code has even a lower MAX_CHANNELS (= 16), and I guess > more than 16 channels don't work perfectly for now. The 32 limitation > above was merely for fixing UBSAN warning. > > Below are ad hoc fixes. let me know if this works. This works, tested on my 34-channel device. Tested-by: Phil Willoughby