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linux/drivers/w1
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David Fries 122bda8107 w1_therm reference count family data 
commit f7134eea05 upstream.

A temperature conversion can take 750 ms and when possible the
w1_therm slave driver drops the bus_mutex to allow other bus
operations, but that includes operations such as a periodic slave
search, which can remove this slave when it is no longer detected.
If that happens the sl->family_data will be freed and set to NULL
causing w1_slave_show to crash when it wakes up.

Signed-off-by: David Fries <David@Fries.net>
Reported-By: Thorsten Bschorr <thorsten@bschorr.de>
Tested-by: Thorsten Bschorr <thorsten@bschorr.de>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
History 2015-07-09 14:36:07 +01:00
..
masters w1: mxc_w1: Fix incorrect "presence" status 2014-06-19 17:51:46 -07:00
slaves w1_therm reference count family data 2015-07-09 14:36:07 +01:00
Kconfig Kconfig: replace "--- help ---" with "---help---" 2012-05-07 15:01:22 +02:00
Makefile [PATCH] better CONFIG_W1_SLAVE_DS2433_CRC handling 2006-12-07 08:39:43 -08:00
w1.c w1: do not unlock unheld list_mutex in __w1_remove_master_device() 2014-05-27 14:08:46 -07:00
w1.h w1: optional bundling of netlink kernel replies 2014-05-27 13:56:21 -07:00
w1_family.c arch: Mass conversion of smp_mb__*() 2014-04-18 14:20:48 +02:00
w1_family.h w1: format for DocBook and fixes 2014-02-07 15:40:18 -08:00
w1_int.c w1: do not unlock unheld list_mutex in __w1_remove_master_device() 2014-05-27 14:08:46 -07:00
w1_int.h MAINTAINERS: Evgeniy has moved 2011-08-25 16:25:33 -07:00
w1_io.c w1: format for DocBook and fixes 2014-02-07 15:40:18 -08:00
w1_log.h MAINTAINERS: Evgeniy has moved 2011-08-25 16:25:33 -07:00
w1_netlink.c w1: optional bundling of netlink kernel replies 2014-05-27 13:56:21 -07:00
w1_netlink.h w1: optional bundling of netlink kernel replies 2014-05-27 13:56:21 -07:00