From nobody Mon Feb 9 04:14:10 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46DF4C77B75 for ; Tue, 23 May 2023 07:56:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235134AbjEWH4e (ORCPT ); Tue, 23 May 2023 03:56:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49642 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235370AbjEWHym (ORCPT ); Tue, 23 May 2023 03:54:42 -0400 Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 795A610D4 for ; Tue, 23 May 2023 00:54:23 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id C53762191A; Tue, 23 May 2023 07:54:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1684828445; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DHrx6V+uewqzX9UqFfIqqGA6/p4XBbhXfx4OFs0RTCU=; b=xJlS6E9iJ2EFF+DymKFeMpQ084cBqDmConz1kdV5Oas2qUnII0Td6kqFhGtxhT3q/nIEiA 7WEBLg1sbVGSTQGaA8kChbcSa5XUk+R6g/q6ALltoeQC8lh4GuKbFgXiPsyk9DmeEJPZJw E5mmWBD9QxU+IV3Pa1DWkEhYNLKkVlY= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1684828445; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DHrx6V+uewqzX9UqFfIqqGA6/p4XBbhXfx4OFs0RTCU=; b=tA9lxT/AZ2PkzccDo0UI9LUOktfO0xARmOgHdxDdUqhMB7w+OR7HwmCgcric2OLX4uy7fE e72T7+Pt15xOh7Bw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 8D04313588; Tue, 23 May 2023 07:54:05 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id KAROIR1xbGT4KgAAMHmgww (envelope-from ); Tue, 23 May 2023 07:54:05 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Subject: [PATCH v2 10/37] ALSA: usb-audio: Get UMP EP name string from USB interface Date: Tue, 23 May 2023 09:53:31 +0200 Message-Id: <20230523075358.9672-11-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230523075358.9672-1-tiwai@suse.de> References: <20230523075358.9672-1-tiwai@suse.de> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" USB descriptor may provide a nicer name for USB interface, and we may take it as the UMP Endpoint name. The UMP EP name is copied as the rawmidi name, too. Also, fill the UMP block product_id field from the iSerialNumber string of the USB device descriptor as a recommended unique id, too. Reviewed-by: Jaroslav Kysela Signed-off-by: Takashi Iwai --- sound/usb/midi2.c | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-) diff --git a/sound/usb/midi2.c b/sound/usb/midi2.c index 7b4cfbaf2ec0..2ac3f96216bc 100644 --- a/sound/usb/midi2.c +++ b/sound/usb/midi2.c @@ -892,15 +892,39 @@ static int set_altset(struct snd_usb_midi2_interface = *umidi) umidi->hostif->desc.bAlternateSetting); } =20 +/* fill UMP Endpoint name string from USB descriptor */ +static void fill_ump_ep_name(struct snd_ump_endpoint *ump, + struct usb_device *dev, int id) +{ + usb_string(dev, id, ump->info.name, sizeof(ump->info.name)); +} + /* fill the fallback name string for each rawmidi instance */ static void set_fallback_rawmidi_names(struct snd_usb_midi2_interface *umi= di) { + struct usb_device *dev =3D umidi->chip->dev; struct snd_usb_midi2_ump *rmidi; + struct snd_ump_endpoint *ump; =20 list_for_each_entry(rmidi, &umidi->rawmidi_list, list) { - if (!*rmidi->ump->core.name) - sprintf(rmidi->ump->core.name, "USB MIDI %d", - rmidi->index); + ump =3D rmidi->ump; + /* fill UMP EP name from USB descriptors */ + if (!*ump->info.name && umidi->hostif->desc.iInterface) + fill_ump_ep_name(ump, dev, umidi->hostif->desc.iInterface); + else if (!*ump->info.name && dev->descriptor.iProduct) + fill_ump_ep_name(ump, dev, dev->descriptor.iProduct); + /* fill fallback name */ + if (!*ump->info.name) + sprintf(ump->info.name, "USB MIDI %d", rmidi->index); + /* copy as rawmidi name if not set */ + if (!*ump->core.name) + strscpy(ump->core.name, ump->info.name, + sizeof(ump->core.name)); + /* use serial number string as unique UMP product id */ + if (!*ump->info.product_id && dev->descriptor.iSerialNumber) + usb_string(dev, dev->descriptor.iSerialNumber, + ump->info.product_id, + sizeof(ump->info.product_id)); } } =20 --=20 2.35.3