From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f50.google.com (mail-pj1-f50.google.com [209.85.216.50]) (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 4733A2773D9 for ; Mon, 1 Dec 2025 20:37:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.50 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764621459; cv=none; b=P/CrengM7gIxOxM3dLmH9hA6gRLUIjUFHWDnCDxLBVUb0qOZTLBX8GfDQ1Rcq2VkfDLVg1vx2LSA75ZbVFZ9LgInXJU42407BxLUWKsTnrpYalT95d1f8dqBMrO72F+6S/zcaAJZaAsafDo57tDbRPyuui9Fd/wH58HKYVHZ0qo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764621459; c=relaxed/simple; bh=2OV1vA17nQisqkFji+r6uSJUsr6kObVd34VeE1DNE2A=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T6gszWLjnbSK+bHENNDmLVJJ5OSX1UbqIU4IbFseFcR1zA4BAuGybSDSO2Gm6j7Xyvqk8r8Qf1MPihSZdtp44N1WVB1cKswWwuLCAuM6IBJvN5rBxLFPTFniDqdpYMjmcDsvwukz8iGlHzpmG8rOwGd71WPS+qjr8BBunqz8UrM= 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=YIT+hADv; arc=none smtp.client-ip=209.85.216.50 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="YIT+hADv" Received: by mail-pj1-f50.google.com with SMTP id 98e67ed59e1d1-3436cbb723fso3893918a91.2 for ; Mon, 01 Dec 2025 12:37:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1764621458; x=1765226258; darn=lists.linux.dev; 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=F4ycNkEEiF97kKkbGcrEYiUPA5+jyVCF2v146XXFMKA=; b=YIT+hADvurBVxbSQpP3qXY2GnP9Q6p8t9D2K9oKIWcyAB8OdsKoMcEvSRGQp9HmVmt GbcTj+X+wKOJo9+S4Dlj0M7f2aqFzTxwmtgE/HU0kqghJVhS4Q/40BSZxnBUDrsQYuwf KyIZyhTMDILnpRvW4U4mz0mT3qqaNfVanoluBMEQKdMPu+DNcF8zpX55J/WyjQXYWWOx bUK5H4kyYmuNP0i7KmDuVrHWTf2wubWk8Ji8w/bWZjTSNVj3ApblSTn28o+Dp1jSb9AU /rzV0RrbIVkYK+6XvmPgx2FKU4KUJPHmYp5l6OgGKx9+iS/qqDdI9LNKwxvqL1ETUOvY r62A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1764621458; x=1765226258; 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=F4ycNkEEiF97kKkbGcrEYiUPA5+jyVCF2v146XXFMKA=; b=TuBbc/YGOQqke/U6enKloyUGE4DqZ5MvYxwq2eLtHtnTtndgzgysJoRG2vR31yWWIk rlyiPXh5C8/mx7OPYF30CF8fgf8bWAhHjGGLu6iHOwpSvWp0U7GsuqZDYOBnfhlnSWEH akXVDedul0CbQVugYvKUgIyJITA9ii/hcZRJCW8iQLk9jrBk5UFNrZSCWndDKkbtq7NI nMMbObkrWymaxFYMoRDLeWkyTU5RJszVTn2B1Ja4KDKlxaKarfhOLYLTAUlqnaMvV0s+ e/eC45/DZ9ytIIJCPSGlPn1oH/96NdqQ06d+Ay52D3fsLctrTrgl93WF06p+YY0Op38n 64wg== X-Forwarded-Encrypted: i=1; AJvYcCWSibzjSOpr9gc5CJ8GgJVAR7fdMUgD3KSRp0m42gv9hY3G6jz+d96VfYdU4mgDLOoRgVSmSIUCavBgztxecNuIsCLJtg==@lists.linux.dev X-Gm-Message-State: AOJu0Yyz1NQxUcIFYpKrF042EPF6+nhjemVfoTvhJb/RJTvp3puHv0Jc nsh13sXG9glxxUd0+dtA16tJ8ZP7nKBmVP8/J0dcaCavIeod3JktpKFQ X-Gm-Gg: ASbGnctLifiAae9CpZeyVuELQcB5ac6jo9DZNOLrE7k5JwKnVBUXfNLVSmjKpqr7gdt XPW32gAAlxS3UBzYd3+/tpgwvC4822jjOvB2Mm0/IYme9P9quDnxTxlfka0uc77JPBVECYV9cQK g+8VBo0W1Ez3qXh+0JZVH00/OSzbYTVKtaa6hjcJNEzZMndtKXogyImYVfp8DhEDgFQO5EhLPQn UePKpJH49Id9RA0Jkx3sohFrigeZ8LR7aElp56DQQbua+Q9y9rSeJmSV94fKQEhwvi2j5OYcWEC FEyraW7jPmQ6HAJnXJq9PDv/oSqtNW9iwfaio9TUL7JxIgjUCR+f5xS/WrBnkTFLtk0/PnlMEOT 7+2IU75MiG4X2j+2FOhOJECb/QLoGOEO3IV3PfcbWQlMjUjUDy7NmJzeyP3WWtyF8wwyucGY9f/ ZbIfawFsTW60kayrUBctwSaNGKpQ9DcD9198duJevCh/OzFQ== X-Google-Smtp-Source: AGHT+IEtZwyJ1h84xNpSd8cwSnswEJ6N/+iIfdUSDQxIm5UJsYL1XcBZqW6zMMJ2pg+7syQbAsGqDA== X-Received: by 2002:a17:90b:2547:b0:341:88c9:ca62 with SMTP id 98e67ed59e1d1-3475ed6a904mr28534111a91.31.1764621457573; Mon, 01 Dec 2025 12:37:37 -0800 (PST) Received: from clint-ThinkPad-L14-Gen-2.. ([110.226.177.250]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-be4fb248be1sm13113892a12.3.2025.12.01.12.37.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 01 Dec 2025 12:37:37 -0800 (PST) From: Clint George To: stern@rowland.harvard.edu, gregkh@linuxfoundation.org Cc: linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, david.hunter.linux@gmail.com, linux-kernel-mentees@lists.linux.dev, skhan@linuxfoundation.org, khalid@kernel.org, Clint George Subject: [PATCH v2 3/6] usb: gadget: dummy_hcd: document ISO endpoint allocation pattern Date: Tue, 2 Dec 2025 02:07:12 +0530 Message-ID: <20251201203715.17768-4-clintbgeorge@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251201203715.17768-1-clintbgeorge@gmail.com> References: <20251119130840.14309-1-clintbgeorge@gmail.com> <20251201203715.17768-1-clintbgeorge@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel-mentees@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Remove commented-out ISO definition and add relevant comment documenting the ISO endpoint allocation pattern. --- drivers/usb/gadget/udc/dummy_hcd.c | 22 +++++----------------- 1 file changed, 5 insertions(+), 17 deletions(-) diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 39b571899..e4124838e 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -151,35 +151,23 @@ static const struct { EP_INFO("ep2out-bulk", USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_OUT)), /* - EP_INFO("ep3in-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_IN)), - EP_INFO("ep4out-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_OUT)), -*/ + * If dummy-hcd supported isochronous transfers: + * - Endpoints 3 and 4 would be ISO IN/OUT respectively + * - Endpoints 8 and 9 would be ISO IN/OUT respectively + * - Endpoints 13 and 14 would be ISO IN/OUT respectively + */ EP_INFO("ep5in-int", USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), EP_INFO("ep6in-bulk", USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_IN)), EP_INFO("ep7out-bulk", USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_OUT)), -/* - EP_INFO("ep8in-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_IN)), - EP_INFO("ep9out-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_OUT)), -*/ EP_INFO("ep10in-int", USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), EP_INFO("ep11in-bulk", USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_IN)), EP_INFO("ep12out-bulk", USB_EP_CAPS(USB_EP_CAPS_TYPE_BULK, USB_EP_CAPS_DIR_OUT)), -/* - EP_INFO("ep13in-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_IN)), - EP_INFO("ep14out-iso", - USB_EP_CAPS(USB_EP_CAPS_TYPE_ISO, USB_EP_CAPS_DIR_OUT)), -*/ EP_INFO("ep15in-int", USB_EP_CAPS(USB_EP_CAPS_TYPE_INT, USB_EP_CAPS_DIR_IN)), -- 2.43.0