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authorPeter Hurley <peter@hurleysoftware.com>2011-08-05 10:44:21 -0400
committerGustavo F. Padovan <padovan@profusion.mobi>2011-08-11 19:50:27 -0300
commit7176522cdca1f0b78a1434b41761f0334511822a (patch)
tree58ec3c3fc712536e898bd2d7780361e8a492f22a /net/bluetooth/cmtp/capi.c
parent751c10a56802513a6b057c8cf1552cecc1c9afde (diff)
Bluetooth: cmtp: Fix deadlock in session deletion
Commit fada4ac339 introduced the usage of kthread API. kthread_stop is a blocking function which returns only when the thread exits. In this case, the thread can't exit because it's waiting for the write lock, which is being held by cmtp_del_connection() which is waiting for the thread to exit -- deadlock. Revert cmtp_reset_ctr to its original behavior: non-blocking signalling for the session to terminate. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
Diffstat (limited to 'net/bluetooth/cmtp/capi.c')
-rw-r--r--net/bluetooth/cmtp/capi.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/bluetooth/cmtp/capi.c b/net/bluetooth/cmtp/capi.c
index 040f67b12978..50f0d135eb8f 100644
--- a/net/bluetooth/cmtp/capi.c
+++ b/net/bluetooth/cmtp/capi.c
@@ -386,7 +386,8 @@ static void cmtp_reset_ctr(struct capi_ctr *ctrl)
capi_ctr_down(ctrl);
- kthread_stop(session->task);
+ atomic_inc(&session->terminate);
+ wake_up_process(session->task);
}
static void cmtp_register_appl(struct capi_ctr *ctrl, __u16 appl, capi_register_params *rp)