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From: David Brownell <david-b@pacbell.net>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Henrique de Moraes Holschuh <hmh@hmh.eng.br>,
	Richard Purdie <rpurdie@rpsys.net>,
	linux-kernel@vger.kernel.org, Ingo Molnar <mingo@elte.hu>,
	Geert Uytterhoeven <geert@linux-m68k.org>,
	netdev@vger.kernel.org,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org,
	video4linux-list@redhat.com,
	Stefan Richter <stefanr@s5r6.in-berlin.de>,
	lm-sensors@lm-sensors.org
Subject: Re: use of preempt_count instead of in_atomic() at leds-gpio.c
Date: Fri, 21 Mar 2008 10:04:04 -0700	[thread overview]
Message-ID: <200803211004.05106.david-b@pacbell.net> (raw)
In-Reply-To: <20080320180802.426ad2d1.akpm@linux-foundation.org>

On Thursday 20 March 2008, Andrew Morton wrote:
> ./drivers/net/usb/pegasus.c
>=20
> =A0 Possibly buggy: deadlockable (I assume)

Looks just unecessary to me ... ethtool MII ops get called from
a task context, as I recall, and other drivers just rely on that.

- Dave

=3D=3D=3D=3D=3D=3D=3D=3D=3D CUT HERE
Remove superfluous in-atomic() check; ethtool MII ops are called
from task context.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
---
 drivers/net/usb/pegasus.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

--- g26.orig/drivers/net/usb/pegasus.c	2008-03-21 08:53:28.000000000 -0=
700
+++ g26/drivers/net/usb/pegasus.c	2008-03-21 08:54:07.000000000 -0700
@@ -1128,12 +1128,8 @@ pegasus_get_settings(struct net_device *
 {
 	pegasus_t *pegasus;
=20
-	if (in_atomic())
-		return 0;
-
 	pegasus =3D netdev_priv(dev);
 	mii_ethtool_gset(&pegasus->mii, ecmd);
-
 	return 0;
 }
=20

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      parent reply	other threads:[~2008-03-21 17:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20080316184349.GA28543@khazad-dum.debian.net>
     [not found] ` <200803161246.23909.david-b@pacbell.net>
     [not found]   ` <20080318001429.896acf51.akpm@linux-foundation.org>
     [not found]     ` <20080320225612.GB20788@khazad-dum.debian.net>
     [not found]       ` <20080320164741.734e838c.akpm@linux-foundation.org>
     [not found]         ` <20080321003604.GC20788@khazad-dum.debian.net>
2008-03-21  1:08           ` use of preempt_count instead of in_atomic() at leds-gpio.c Andrew Morton
2008-03-21  1:31             ` Alan Stern
2008-03-21  1:36               ` Michael Buesch
2008-03-21  2:27                 ` Andrew Morton
2008-03-21  3:07                   ` Alan Stern
2008-03-21  3:17                     ` Andrew Morton
2008-03-21 13:47                   ` Heiko Carstens
2008-03-21 16:54                     ` Greg KH
2008-03-21 19:59                       ` Andrew Morton
2008-03-21 20:16                         ` Michael Buesch
2008-03-21 20:20                           ` Michael Buesch
2008-03-21  9:21             ` Stefan Richter
2008-03-21  9:27               ` Stefan Richter
2008-03-21 12:37               ` Henrique de Moraes Holschuh
2008-03-21 13:16                 ` Stefan Richter
2008-03-22 11:29                   ` Stefan Richter
2008-03-21 17:04             ` David Brownell [this message]

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