lkml.org 
[lkml]   [2013]   [Oct]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH 0/2] w1 fixes for broken subsystem
Date
In recent kernels the 1-wire kernel modules do not work any more. The module 
wire got broken in 3.11-rc1 and 3.12-rc1 introduced a further problem:

1: 3.11-rc1 introduced the automatic loading of slave modules. This blocks
modprobe, because request_module is called with a locked mutex of the w1
master.
Loading of the slave module calls w1_register_family, which calls in turn
w1_reconnect_slaves and there mutex_lock(&dev->mutex) will wait forever....

2: 3.12-rc1 introduced w1_bus_notify which assumes that all slaves have fops
defined. This is not the case for e.g. w1_smem and maybe also breaks custom
written modules.

This very small patch set is split in 2 parts:

PATCH 1/2: w1 - fix fops in w1_bus_notify
fixes problem 2 above

PATCH 2/2: w1 - call request_module with w1 master mutex unlocked
fixes problem 1 above

Please include these patches in 3.12-rc4 and in 3.11 stable.

Best regards,

Hans-Frieder Vogt e-mail: hfvogt <at> gmx .dot. net


\
 
 \ /
  Last update: 2013-10-06 21:21    [W:0.038 / U:0.604 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site