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From: Pavel Machek <pavel@ucw.cz>
To: James Ketrenos <jketreno@linux.intel.com>
Cc: "David S. Miller" <davem@davemloft.net>,
	vda@ilport.com.ua, abonilla@linuxwireless.org, jgarzik@pobox.com,
	netdev@oss.sgi.com, ipw2100-admin@linux.intel.com
Subject: Re: ipw2100: firmware problem
Date: Thu, 9 Jun 2005 23:11:13 +0200	[thread overview]
Message-ID: <20050609211113.GC4173@elf.ucw.cz> (raw)
In-Reply-To: <42A8AE2A.4080104@linux.intel.com>

Hi!

> >I agree.
> >
> >There is a similar problem in the Acenic driver, it brings the
> >link up and receives broadcast packets as soon as the driver
> >is loaded.  Mostly this is because the driver inits the chip
> >and registers the IRQ handler at probe time, whereas nearly
> >every other driver does this at ->open() time.
> >  
> >
> The ipw2100 originally postponed doing any initialization until open was
> called.  The problem at that time was that distributions were crafted to
> rely on link detection (I believe via ethtoolop's get_link) before they
> would bring the interface up.
> 
> With a wireless device, you don't have link until you are associated... 
> chicken and egg.  The solution was to move initialization and
> association to the probe.
> 
> I don't know if all the distributions have moved away from this model. 
> If they have and the devices are brought up regardless of link, then
> going back to delaying radio initialization until the open() is called
> is workable. 

Ook, great, I see.
								Pavel

  reply	other threads:[~2005-06-09 21:11 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-08 14:23 ipw2100: firmware problem Pavel Machek
2005-06-08 14:44 ` Denis Vlasenko
2005-06-08 14:56   ` Jirka Bohac
2005-06-08 16:29     ` Pavel Machek
2005-06-21  7:42     ` Simon Kelley
2005-06-21  8:29       ` Feyd
2005-06-21  8:46         ` Simon Kelley
2005-06-08 15:05   ` Alejandro Bonilla
2005-06-08 15:23     ` Jiri Benc
2005-06-09  6:09     ` Denis Vlasenko
2005-06-09  6:16       ` David S. Miller
2005-06-09  6:25         ` Denis Vlasenko
2005-06-09  6:28           ` David S. Miller
2005-06-09  6:37             ` Denis Vlasenko
2005-06-09  8:36               ` Wichert Akkerman
2005-06-09 10:42         ` Pavel Machek
2005-06-09 19:53           ` David S. Miller
2005-06-09 21:01             ` James Ketrenos
2005-06-09 21:11               ` Pavel Machek [this message]
2005-06-09 21:15               ` Arjan van de Ven
2005-06-09 22:11               ` David S. Miller
2005-06-10  2:13               ` Jeff Garzik
2005-06-10  2:46                 ` Alejandro Bonilla
2005-06-10  9:00                   ` Pavel Machek
2005-06-10 13:00                     ` John Stoffel
2005-06-10 13:33                     ` Alejandro Bonilla
2005-06-09 14:31       ` Alejandro Bonilla
2005-06-10  6:56         ` Denis Vlasenko
2005-06-10 13:23           ` Alejandro Bonilla
2005-06-10 20:26             ` Lee Revell
2005-06-10 21:00               ` Alejandro Bonilla
2005-06-10 21:07                 ` Lee Revell
2005-06-13 16:42               ` Jan Rychter
2005-06-11 12:44             ` Denis Vlasenko
2005-06-08 17:10   ` James Ketrenos
2005-06-08 19:43     ` David S. Miller
2005-06-08 19:49       ` Dave Jones
2005-06-08 19:54         ` David S. Miller
2005-06-09  6:03       ` Denis Vlasenko
2005-06-09  6:10         ` David S. Miller
2005-06-09  6:17           ` Denis Vlasenko
2005-06-09  6:20             ` David S. Miller
2005-06-09  6:30               ` Denis Vlasenko
2005-06-09  6:35                 ` David S. Miller
2005-06-10  3:51                 ` Jim Crilly
2005-06-09  6:06       ` Jeff Garzik
2005-06-09  6:13         ` David S. Miller
2005-06-09  6:29           ` Jeff Garzik
2005-06-08 16:58 ` James Ketrenos
2005-06-08 21:27   ` Pavel Machek
2005-06-08 21:46     ` James Ketrenos
2005-06-08 22:34       ` Pavel Machek
2005-06-09  3:33         ` Zhu Yi
2005-06-09 10:56           ` Pavel Machek
2005-06-09 13:56   ` Andi Kleen
2005-06-09 21:12     ` Olivier Galibert
2005-06-09 23:13       ` Jeff Garzik

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