workqueue: Fix typo in comments

Fix typo:
*assing  ==> assign
*alloced  ==> allocated
*Retun  ==> Return
*excute  ==> execute

v1->v2:
*reverse 'iff'
*update changelog
Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

include/linux/workqueue.h

@@ -324,7 +324,7 @@ enum {
 	 * to execute and tries to keep idle cores idle to conserve power;
 	 * however, for example, a per-cpu work item scheduled from an
 	 * interrupt handler on an idle CPU will force the scheduler to
-	 * excute the work item on that CPU breaking the idleness, which in
+	 * execute the work item on that CPU breaking the idleness, which in
 	 * turn may lead to more scheduling choices which are sub-optimal
 	 * in terms of power consumption.
 	 *

kernel/workqueue.c

@@ -524,7 +524,7 @@ static inline void debug_work_deactivate(struct work_struct *work) { }
 #endif
 
 /**
- * worker_pool_assign_id - allocate ID and assing it to @pool
+ * worker_pool_assign_id - allocate ID and assign it to @pool
  * @pool: the pool pointer of interest
  *
  * Returns 0 if ID in [0, WORK_OFFQ_POOL_NONE) is allocated and assigned
@@ -3763,7 +3763,7 @@ static void pwq_adjust_max_active(struct pool_workqueue *pwq)
 	raw_spin_unlock_irqrestore(&pwq->pool->lock, flags);
 }
 
-/* initialize newly alloced @pwq which is associated with @wq and @pool */
+/* initialize newly allocated @pwq which is associated with @wq and @pool */
 static void init_pwq(struct pool_workqueue *pwq, struct workqueue_struct *wq,
 		     struct worker_pool *pool)
 {
@@ -5331,7 +5331,7 @@ static int workqueue_apply_unbound_cpumask(void)
  *  the affinity of all unbound workqueues.  This function check the @cpumask
  *  and apply it to all unbound workqueues and updates all pwqs of them.
  *
- *  Retun:	0	- Success
+ *  Return:	0	- Success
  *  		-EINVAL	- Invalid @cpumask
  *  		-ENOMEM	- Failed to allocate memory for attrs or pwqs.
  */