summaryrefslogtreecommitdiff
path: root/drivers/w1/w1_family.h
diff options
context:
space:
mode:
authorDavid Fries <david@fries.net>2008-10-15 22:04:38 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-10-16 11:21:49 -0700
commitc30c9b15187e977ab5928f7276e9dfcd8d6f9460 (patch)
treed36d7513c5acf1d39f581625ffa5c1915ae5627f /drivers/w1/w1_family.h
parentdd78c9439fc1e031835bccb934d27b978c72c536 (diff)
W1: fix deadlocks and remove w1_control_thread
w1_control_thread was removed which would wake up every second and process newly registered family codes and complete some final cleanup for a removed master. Those routines were moved to the threads that were previously requesting those operations. A new function w1_reconnect_slaves takes care of reconnecting existing slave devices when a new family code is registered or removed. The removal case was missing and would cause a deadlock waiting for the family code reference count to decrease, which will now happen. A problem with registering a family code was fixed. A slave device would be unattached if it wasn't yet claimed, then attached at the end of the list, two unclaimed slaves would cause an infinite loop. The struct w1_bus_master.search now takes a pointer to the struct w1_master device to avoid searching for it, which would have caused a lock ordering deadlock with the removal of w1_control_thread. Signed-off-by: David Fries <david@fries.net> Signed-off-by: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/w1/w1_family.h')
-rw-r--r--drivers/w1/w1_family.h1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/w1/w1_family.h b/drivers/w1/w1_family.h
index ef1e1dafa19a..296a87edd922 100644
--- a/drivers/w1/w1_family.h
+++ b/drivers/w1/w1_family.h
@@ -63,6 +63,5 @@ void __w1_family_get(struct w1_family *);
struct w1_family * w1_family_registered(u8);
void w1_unregister_family(struct w1_family *);
int w1_register_family(struct w1_family *);
-void w1_reconnect_slaves(struct w1_family *f);
#endif /* __W1_FAMILY_H */