entry: Fix spelling/typo errors in irq entry code

s/reguired/required/
s/Interupts/Interrupts/
s/quiescient/quiescent/
s/assemenbly/assembly/
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20201104230157.3378023-1-ira.weiny@intel.com

include/linux/entry-common.h

@@ -415,7 +415,7 @@ void irqentry_exit_cond_resched(void);
  * @state:	Return value from matching call to irqentry_enter()
  *
  * Depending on the return target (kernel/user) this runs the necessary
- * preemption and work checks if possible and reguired and returns to
+ * preemption and work checks if possible and required and returns to
  * the caller with interrupts disabled and no further work pending.
  *
  * This is the last action before returning to the low level ASM code which
@@ -438,7 +438,7 @@ irqentry_state_t noinstr irqentry_nmi_enter(struct pt_regs *regs);
  * @regs:	Pointer to pt_regs (NMI entry regs)
  * @irq_state:	Return value from matching call to irqentry_nmi_enter()
  *
- * Last action before returning to the low level assmenbly code.
+ * Last action before returning to the low level assembly code.
  *
  * Counterpart to irqentry_nmi_enter().
  */

kernel/entry/common.c

@@ -304,7 +304,7 @@ noinstr irqentry_state_t irqentry_enter(struct pt_regs *regs)
 	 * If this entry hit the idle task invoke rcu_irq_enter() whether
 	 * RCU is watching or not.
 	 *
-	 * Interupts can nest when the first interrupt invokes softirq
+	 * Interrupts can nest when the first interrupt invokes softirq
 	 * processing on return which enables interrupts.
 	 *
 	 * Scheduler ticks in the idle task can mark quiescent state and
@@ -315,7 +315,7 @@ noinstr irqentry_state_t irqentry_enter(struct pt_regs *regs)
 	 * interrupt to invoke rcu_irq_enter(). If that nested interrupt is
 	 * the tick then rcu_flavor_sched_clock_irq() would wrongfully
 	 * assume that it is the first interupt and eventually claim
-	 * quiescient state and end grace periods prematurely.
+	 * quiescent state and end grace periods prematurely.
 	 *
 	 * Unconditionally invoke rcu_irq_enter() so RCU state stays
 	 * consistent.