All of lore.kernel.org
 help / color / mirror / Atom feed
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Lucas Stach <l.stach@pengutronix.de>
Cc: linux-kernel@vger.kernel.org, patchwork-lst@pengutronix.de,
	kernel@pengutronix.de
Subject: Re: [PATCH] driver core: unbind consumers before locking parent on device unbind
Date: Fri, 17 Feb 2017 10:42:42 -0800	[thread overview]
Message-ID: <20170217184242.GA11935@kroah.com> (raw)
In-Reply-To: <20170217183629.3628-1-l.stach@pengutronix.de>

On Fri, Feb 17, 2017 at 07:36:29PM +0100, Lucas Stach wrote:
> On forced unbind the parent lock is taken, as the device might be a USB
> device. The device to be unbound might have active consumers, which
> must be unbound before calling device_release_driver(), otherwise this
> function might deadlock when trying to take the parent lock during
> consumer unbind.

Really?  What type of device does this fail on today?

thanks,

greg k-h

  reply	other threads:[~2017-02-17 18:42 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-02-17 18:36 [PATCH] driver core: unbind consumers before locking parent on device unbind Lucas Stach
2017-02-17 18:42 ` Greg Kroah-Hartman [this message]
2017-02-17 18:46   ` Lucas Stach

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20170217184242.GA11935@kroah.com \
    --to=gregkh@linuxfoundation.org \
    --cc=kernel@pengutronix.de \
    --cc=l.stach@pengutronix.de \
    --cc=linux-kernel@vger.kernel.org \
    --cc=patchwork-lst@pengutronix.de \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.