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From: Greg KH <gregkh@linuxfoundation.org>
To: Akshay Gujar <Akshay.Gujar@harman.com>
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
Date: Fri, 17 Jul 2026 12:35:33 +0200	[thread overview]
Message-ID: <2026071745-share-paternity-df8c@gregkh> (raw)
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

      parent reply	other threads:[~2026-07-17 10:35 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-07-15 11:40 [PATCH v5 0/3] driver core: add enumeration failure uevent helper Akshay Gujar
2026-07-15 11:40 ` [PATCH v5 1/3] driver core: add device_enumeration_failure_notify() helper Akshay Gujar
2026-07-17 10:40   ` Greg KH
2026-07-15 11:40 ` [PATCH v5 2/3] Documentation: ABI: document DEVICE_ENUMERATION_FAILURE uevent Akshay Gujar
2026-07-17 10:37   ` Greg KH
2026-07-15 11:40 ` [PATCH v5 3/3] usb: hub: send enumeration failure uevent Akshay Gujar
2026-07-17 10:35 ` Greg KH [this message]

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