lkml.org 
[lkml]   [2012]   [Nov]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: PROBLEM: REGRESSION in drivers/platform/x86/dell-laptop.c
On 11/18/2012 11:47 AM, Mark Ellis wrote:
> 1. rfkill code removal causes hang
>
> 2. the rfkill code was removed from this driver in commit
> 53039f222c548bfc119eea6df4dca2b57550e271 this results in my computer
> hanging (dell n5050) if booting with the wireless (hardware) disabled.
> downgrading this module to the version prior to this commit fixes the
> issue.

The commit you mention does not touch dell-laptop.c. The commit before
that one doe, but it is only adding code. Digging the tree I found this
one between kernel v3.4 and v3.5-rc1:

commit a6c2390cd6d2083d27a2359658e08f2d3df375ac
Author: Matthew Garrett <mjg@redhat.com>
Date: Fri Jun 1 12:46:56 2012 -0400

dell-laptop: Remove rfkill code

The interface just doesn't work on some machines, and Dell haven't been
able to tell us either which machines those are or what we should be
doing instead. This would be fine, except it results in userspace
ending
up confused and general sadness. So let's just rip it out for now.

Signed-off-by: Matthew Garrett <mjg@redhat.com>

Actually, the behavior you describe and given you have a BCM4313 running
with brcmsmac I may point out that this driver has an issue coming up
with wireless disabled. This has been fixed in 3.7 kernel so you may
want to try:

commit 82d8eba358badb466a4e988ecabf0668a8d92e9c
Author: Piotr Haber <phaber@broadcom.com>
Date: Wed Sep 19 22:21:15 2012 +0200

brcmsmac: don't start device when RfKill is engaged

This patch fixes a bug when device is being started
while RfKill switch is engaged, leading to hang
due to partial initialization of hardware.

Tested-by: <dragonn@op.pl>
Reviewed-by: Arend van Spriel <arend@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Piotr Haber <phaber@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

Maybe I should resubmit it to stable. Now there is an idea.

Gr. AvS



\
 
 \ /
  Last update: 2012-11-18 20:21    [from the cache]
©2003-2011 Jasper Spaans