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From: Greg KH <gregkh@linuxfoundation.org>
To: Linus Torvalds <torvalds@linux-foundation.org>,
	Kay Sievers <kay@vrfy.org>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>,
	Lennart Poettering <lennart@poettering.net>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Kay Sievers <kay@redhat.com>,
	Linux Media Mailing List <linux-media@vger.kernel.org>,
	Michael Krufky <mkrufky@linuxtv.org>
Subject: Re: udev breakages - was: Re: Need of an ".async_probe()" type of callback at driver's core - Was: Re: [PATCH] [media] drxk: change it to use request_firmware_nowait()
Date: Tue, 2 Oct 2012 15:12:39 -0700	[thread overview]
Message-ID: <20121002221239.GA30990@kroah.com> (raw)
In-Reply-To: <CA+55aFyzXFNq7O+M9EmiRLJ=cDJziipf=BLM8GGAG70j_QTciQ@mail.gmail.com>

On Tue, Oct 02, 2012 at 09:33:03AM -0700, Linus Torvalds wrote:
> I don't know where the problem started in udev, but the report I saw
> was that udev175 was fine, and udev182 was broken, and would deadlock
> if module_init() did a request_firmware(). That kind of nested
> behavior is absolutely *required* to work, in order to not cause
> idiotic problems for the kernel for no good reason.
> 
> What kind of insane udev maintainership do we have? And can we fix it?
> 
> Greg, I think you need to step up here too. You were the one who let
> udev go. If the new maintainers are causing problems, they need to be
> fixed some way.

I've talked about this with Kay in the past (Plumbers conference I
think) and I thought he said it was all fixed in the latest version of
udev so there shouldn't be any problems anymore with this.

Mauro, what version of udev are you using that is still showing this
issue?

Kay, didn't you resolve this already?  If not, what was the reason why?

thanks,

greg k-h

  parent reply	other threads:[~2012-10-02 22:12 UTC|newest]

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <1340285798-8322-1-git-send-email-mchehab@redhat.com>
     [not found] ` <4FE37194.30407@redhat.com>
     [not found]   ` <4FE8B8BC.3020702@iki.fi>
     [not found]     ` <4FE8C4C4.1050901@redhat.com>
     [not found]       ` <4FE8CED5.104@redhat.com>
     [not found]         ` <20120625223306.GA2764@kroah.com>
     [not found]           ` <4FE9169D.5020300@redhat.com>
2012-10-02 13:03             ` udev breakages - was: Re: Need of an ".async_probe()" type of callback at driver's core - Was: Re: [PATCH] [media] drxk: change it to use request_firmware_nowait() Mauro Carvalho Chehab
2012-10-02 16:33               ` Linus Torvalds
2012-10-02 21:03                 ` Ivan Kalvachev
2012-10-02 22:37                   ` Linus Torvalds
2012-10-03 22:15                     ` Lucas De Marchi
2012-10-11 18:33                     ` Shea Levy
2012-10-12  1:55                       ` Ming Lei
2012-10-02 22:12                 ` Greg KH [this message]
2012-10-02 22:23                   ` Greg KH
2012-10-02 22:47                     ` Linus Torvalds
2012-10-03  0:01                       ` Jiri Kosina
2012-10-03  0:12                         ` Linus Torvalds
2012-10-04 14:36                           ` Jiri Kosina
2012-10-03 15:13                       ` Mauro Carvalho Chehab
2012-10-03 16:38                         ` Linus Torvalds
2012-10-03 17:00                           ` Linus Torvalds
2012-10-03 17:09                           ` Al Viro
2012-10-03 17:32                             ` Linus Torvalds
2012-10-03 19:26                               ` Al Viro
2012-10-04  0:57                                 ` udev breakages - Nix
2012-10-04 10:35                                   ` Nix
2012-10-03 19:50                               ` udev breakages - was: Re: Need of an ".async_probe()" type of callback at driver's core - Was: Re: [PATCH] [media] drxk: change it to use request_firmware_nowait() Greg KH
2012-10-03 20:39                                 ` Linus Torvalds
2012-10-03 21:04                                   ` Kay Sievers
2012-10-03 21:05                                   ` Greg KH
2012-10-03 21:18                                     ` Kay Sievers
2012-10-03 21:45                                       ` Alan Cox
2012-10-03 21:58                                   ` Lucas De Marchi
2012-10-03 22:17                                     ` Linus Torvalds
2012-10-03 22:48                                   ` Andy Walls
2012-10-03 22:58                                     ` Linus Torvalds
2012-10-04  2:39                                       ` Kay Sievers
2012-10-04 17:29                                         ` udev breakages - Eric W. Biederman
2012-10-04 17:42                                           ` Greg KH
2012-10-04 19:17                                             ` Alan Cox
2012-10-10  3:19                                               ` Felipe Contreras
2012-10-10 16:08                                                 ` Geert Uytterhoeven
2012-10-11  3:32                                             ` Eric W. Biederman
2012-10-04 13:39                                       ` udev breakages - was: Re: Need of an ".async_probe()" type of callback at driver's core - Was: Re: [PATCH] [media] drxk: change it to use request_firmware_nowait() Josh Boyer
2012-10-04 13:58                                         ` Greg KH
2012-10-03 22:53                                   ` Stephen Rothwell
2012-10-03 21:10                                 ` Andy Walls
2012-10-03 19:48                           ` Access files from kernel Kirill A. Shutemov
2012-10-03 20:32                             ` Linus Torvalds
     [not found]                           ` <CACVXFVNTZmG+zTQNi9mCn9ynsCjkM084TmHKDcYYggtqLfhqNQ@mail.gmail.com>
2012-10-04  1:42                             ` udev breakages - was: Re: Need of an ".async_probe()" type of callback at driver's core - Was: Re: [PATCH] [media] drxk: change it to use request_firmware_nowait() Linus Torvalds
2012-10-03 14:12                     ` Mauro Carvalho Chehab
2012-10-03 14:36                   ` Kay Sievers
2012-10-03 14:44                     ` Linus Torvalds
2012-10-03 16:57                     ` Greg KH
2012-10-03 17:24                       ` Kay Sievers
2012-10-03 18:07                         ` Linus Torvalds
2012-10-03 19:46                       ` Mauro Carvalho Chehab
     [not found] <fa.90I1W/wmSTgRFXVG67o7Pp3+rKA@ifi.uio.no>
     [not found] ` <fa.Oszo+r/ZqdTxC2FHqqg+CRVMJ5Y@ifi.uio.no>
     [not found]   ` <fa.CoxzZZId9dJONv353c+pFG/HO8E@ifi.uio.no>
     [not found]     ` <fa.ixJ/7D7BnMK8xp7CwikX7jbmnKU@ifi.uio.no>
     [not found]       ` <fa./ubRQE7P/T+ateohnOKdDxOFhL4@ifi.uio.no>
     [not found]         ` <fa.lpiFTa5CtuIkUf2Z5eJ0YlsNwYI@ifi.uio.no>
2012-10-04 14:50           ` Kurt H Maier
2012-10-05  8:03             ` Emmanuel Benisty
2012-10-05 20:17               ` david
2012-10-05 21:43                 ` Henrique de Moraes Holschuh

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