From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id A664AC433F5 for ; Tue, 16 Nov 2021 01:40:01 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 88B4E61251 for ; Tue, 16 Nov 2021 01:40:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348454AbhKPBm4 (ORCPT ); Mon, 15 Nov 2021 20:42:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:42470 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242342AbhKOSfL (ORCPT ); Mon, 15 Nov 2021 13:35:11 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id B69D3632D8; Mon, 15 Nov 2021 18:01:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1636999294; bh=NDMXlhLTs42BUwBONK6GR9dWhwDi9WsFuvb1JSvyC1Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KnExGLB03Lqox83vuGRnKRvWL594pWaQ0k5Bbv5KOjeNwPxZ1CMJq2w1V+o/xrHeP 39u+K3CJ7XFk5e2RP6gOLT4nHlgmmO2My+S17pidA+fn36k05MqHLAcSWy7O+leCUr dC8o6cI8aYFmSXtgILecmQJruZjVK+dzUHBowfws= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Ricardo Ribalda , Hans Verkuil , Laurent Pinchart , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 5.14 244/849] media: uvcvideo: Set unique vdev name based in type Date: Mon, 15 Nov 2021 17:55:27 +0100 Message-Id: <20211115165428.468574261@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211115165419.961798833@linuxfoundation.org> References: <20211115165419.961798833@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ricardo Ribalda [ Upstream commit e3f60e7e1a2b451f538f9926763432249bcf39c4 ] All the entities must have a unique name. We can have a descriptive and unique name by appending the function and the entity->id. This is even resilent to multi chain devices. Fixes v4l2-compliance: Media Controller ioctls: fail: v4l2-test-media.cpp(205): v2_entity_names_set.find(key) != v2_entity_names_set.end() test MEDIA_IOC_G_TOPOLOGY: FAIL fail: v4l2-test-media.cpp(394): num_data_links != num_links test MEDIA_IOC_ENUM_ENTITIES/LINKS: FAIL Signed-off-by: Ricardo Ribalda Reviewed-by: Hans Verkuil Signed-off-by: Laurent Pinchart Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/usb/uvc/uvc_driver.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index 9a791d8ef200d..c4bc67024534a 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -2194,6 +2194,7 @@ int uvc_register_video_device(struct uvc_device *dev, const struct v4l2_file_operations *fops, const struct v4l2_ioctl_ops *ioctl_ops) { + const char *name; int ret; /* Initialize the video buffers queue. */ @@ -2222,16 +2223,20 @@ int uvc_register_video_device(struct uvc_device *dev, case V4L2_BUF_TYPE_VIDEO_CAPTURE: default: vdev->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; + name = "Video Capture"; break; case V4L2_BUF_TYPE_VIDEO_OUTPUT: vdev->device_caps = V4L2_CAP_VIDEO_OUTPUT | V4L2_CAP_STREAMING; + name = "Video Output"; break; case V4L2_BUF_TYPE_META_CAPTURE: vdev->device_caps = V4L2_CAP_META_CAPTURE | V4L2_CAP_STREAMING; + name = "Metadata"; break; } - strscpy(vdev->name, dev->name, sizeof(vdev->name)); + snprintf(vdev->name, sizeof(vdev->name), "%s %u", name, + stream->header.bTerminalLink); /* * Set the driver data before calling video_register_device, otherwise -- 2.33.0