Staging: DST: extend thread pool exit conditions.

Added thread pool exit condition into the thread_pool_del_worker(). If
called in parallel another thread can steal

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/staging/dst/thread_pool.c b/drivers/staging/dst/thread_pool.c
index c35754d..7bed4e8 100644 (file)
--- a/drivers/staging/dst/thread_pool.c
+++ b/drivers/staging/dst/thread_pool.c
@@ -115,7 +115,7 @@ void thread_pool_del_worker(struct thread_pool *p)
 {
        struct thread_pool_worker *w = NULL;
 
-       while (!w) {
+       while (!w && p->thread_num) {
                wait_event(p->wait, !list_empty(&p->ready_list) || !p->thread_num);
 
                dprintk("%s: locking list_empty: %d, thread_num: %d.\n",