commit f799996e309cad545b3a7f84ef6f333a09c8b876
author Srinivas Krovvidi <skrovvid@codeaurora.org> Wed Aug 01 18:21:37 2012 +0530
committer Srinivas Krovvidi <skrovvid@codeaurora.org> Fri Aug 10 21:18:18 2012 +0530
tree e3c3f6434be96ba817652239a811122d62427ee5
parent 2e02b861173406a1287a53ca7b836a4ad5fd4255

Bluetooth: Block SCO disconnect operation on BT_CLOSED state.

Have maximum blocking time for shutdown operation as DISCONNECT_TIMEOUT.
During this period when SCO connection closes, the userspace will be
updated on the close operation. Existing approach of immidiate return
on shutdown call can cause synchronization issues on SCO state between
kernel and userspace. This happens when disconnect operation takes
more time at kernel space.

Change-Id: Id9e6a61c2c3d4ba2cf6da574fc49bc6894a8f96a
Signed-off-by: Srinivas Krovvidi <skrovvid@codeaurora.org>

include/net/bluetooth/sco.h

diff --git a/include/net/bluetooth/sco.h b/include/net/bluetooth/sco.h
index 160e3f0..6d94c34 100644
--- a/include/net/bluetooth/sco.h
+++ b/include/net/bluetooth/sco.h
@@ -31,7 +31,7 @@
 #define SCO_DEFAULT_FLUSH_TO	0xFFFF
 
 #define SCO_CONN_TIMEOUT	(HZ * 40)
-#define SCO_DISCONN_TIMEOUT	(HZ * 2)
+#define SCO_DISCONN_TIMEOUT	(HZ * 20)
 #define SCO_CONN_IDLE_TIMEOUT	(HZ * 60)
 
 /* SCO socket address */