From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 95A913B27F4; Fri, 17 Jul 2026 10:35:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784284542; cv=none; b=YDwLgLiVovFY4CFF1tw9cNiRjlY6v+dBOI6e4pHS105fHGVTggm8bbKTGtjBGQ/V2W1x2asijDPnTs6VS8bQBsxxnEhy9NyhrgsEv6kbkps2hqOmbi6XZITfozF7UeMltvLtO8pR/9gHbYM+EtVp3HmHt0eHysFDsOUcnRqoX04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784284542; c=relaxed/simple; bh=74DQWfYV5Ns5pkwq7/9wuvk/TAa30XZrjSkBOztRe8E=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KcJnboXZ2Mk8TGiNqR/nYAgq8XkvOOXDkV9TmW4s/K6SXJt3sOYMTOyIXAkNau202hWYAxT4w438/F0Kc8R3/O6MuYNTaUAJyJTGYQVkld4X8SFsL/m7SxoTGoMDMJiZz4LxiaygLVkGcHA7mawbwwqFX5iPbiTsGp2f7x/pLhY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=pRSjVzAd; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="pRSjVzAd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CF031F000E9; Fri, 17 Jul 2026 10:35:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1784284541; bh=gKhrYSD1tsaF6lxyngUgTUHew+K2Cn2+NflfHrGWkqk=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=pRSjVzAd1gZYWUon0svMmhus7+WEibJrD5jWfwcH9HaCV9cjxzOos1Rtm9jZLUQyx FrHYHPDBfeGvHnrAeKtDecPmolVBnIO9+H7ye6Tt0ESnOWJMC9wbXIUCOHBJ6ZKwje GYlA8Ky7k0c2HJXAAr8MHIBYFngq5VOsAJ1FX7bA= Date: Fri, 17 Jul 2026 12:35:33 +0200 From: Greg KH To: Akshay Gujar Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, naveen.v@harman.com, oneukum@suse.com, stern@rowland.harvard.edu Subject: Re: [PATCH v5 0/3] driver core: add enumeration failure uevent helper Message-ID: <2026071745-share-paternity-df8c@gregkh> References: <20260715114028.3627807-1-Akshay.Gujar@harman.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260715114028.3627807-1-Akshay.Gujar@harman.com> On Wed, Jul 15, 2026 at 11:40:25AM +0000, Akshay Gujar wrote: > Hotpluggable buses can detect that a device is physically present, but > enumeration may still fail early due to protocol-level errors. Today, > such failures are only reported via kernel log messages, with no > structured userspace notification. > > This series introduces a small, generic helper in the driver core that > emits a KOBJ_CHANGE uevent when enumeration fails, and wires it into the > USB hub enumeration failure path as an initial user. > > The USB change is intentionally minimal and serves as an initial user of > the generic helper. Other subsystems may use the helper independently if > needed. There are some review comments on the documentation patch here: https://sashiko.dev/#/patchset/20260715114028.3627807-1-Akshay.Gujar@harman.com that look correct. This will not be an interface message, but a device message, right? And what about the dev_name() issue? thanks, greg k-h