h63xx: tsc2101 alsa sound support

[linux-2.6-omap-h63xx.git] / kernel / kthread.c

diff --git a/kernel/kthread.c b/kernel/kthread.c
index e377e2244103b28e383e7fc4c4bee120427c1e68..e75950a1092c6b2063ea24a1f196f987e7f21bf5 100644 (file)
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -164,6 +164,12 @@ void kthread_bind(struct task_struct *k, unsigned int cpu)
 EXPORT_SYMBOL(kthread_bind);
 
 int kthread_stop(struct task_struct *k)
+{
+       return kthread_stop_sem(k, NULL);
+}
+EXPORT_SYMBOL(kthread_stop);
+
+int kthread_stop_sem(struct task_struct *k, struct semaphore *s)
 {
        int ret;
 
@@ -174,11 +180,14 @@ int kthread_stop(struct task_struct *k)
 
        /* Must init completion *before* thread sees kthread_stop_info.k */
        init_completion(&kthread_stop_info.done);
-       wmb();
+       smp_wmb();
 
        /* Now set kthread_should_stop() to true, and wake it up. */
        kthread_stop_info.k = k;
-       wake_up_process(k);
+       if (s)
+               up(s);
+       else
+               wake_up_process(k);
        put_task_struct(k);
 
        /* Once it dies, reset stop ptr, gather result and we're done. */
@@ -189,7 +198,7 @@ int kthread_stop(struct task_struct *k)
 
        return ret;
 }
-EXPORT_SYMBOL(kthread_stop);
+EXPORT_SYMBOL(kthread_stop_sem);
 
 static __init int helper_init(void)
 {