NeilBrown 59d4467be4 w1: introduce a slave mutex for serializing IO ... w1 devices need a mutex to serial IO. Most use master->mutex. However that is used for other purposes and they can conflict. In particular master->mutex is held while w1_attach_slave_device is called. For bq27000, this registers a 'powersupply' device which tries to read the current status. The attempt to read will cause a deadlock on master->mutex. So create a new per-slave mutex and use that for serializing IO for bq27000. Signed-off-by: NeilBrown <neilb@suse.de> Cc: Evgeniy Polyakov <zbr@ioremap.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-06-12 15:27:32 -07:00
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masters
slaves	w1: introduce a slave mutex for serializing IO	2012-06-12 15:27:32 -07:00
Kconfig
Makefile
w1_family.c
w1_family.h
w1_int.c
w1_int.h
w1_io.c
w1_log.h
w1_netlink.c
w1_netlink.h
w1.c	w1: introduce a slave mutex for serializing IO	2012-06-12 15:27:32 -07:00
w1.h	w1: introduce a slave mutex for serializing IO	2012-06-12 15:27:32 -07:00