From 1535f668a316358d433902315c01342919bd79f5 Mon Sep 17 00:00:00 2001
From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Fri, 11 Feb 2022 19:14:57 +0100
Subject: [PATCH 162/166] misc: hi6421-spmi-pmic: Use
 generic_handle_irq_safe().

generic_handle_irq() is invoked from a regular interrupt service
routine. This handler will become a forced-threaded handler on
PREEMPT_RT and will be invoked with enabled interrupts. The
generic_handle_irq() must be invoked with disabled interrupts in order
to avoid deadlocks.

Instead of manually disabling interrupts before invoking use
generic_handle_irq_safe() which can be invoked with enabled and disabled
interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Link: https://lore.kernel.org/r/20220211181500.1856198-5-bigeasy@linutronix.de
(cherry picked from commit 87ebe41b420c6163c9cb76ac25ec02333473ff87)
Signed-off-by: Clark Williams <williams@redhat.com>
---
 drivers/misc/hi6421v600-irq.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Index: linux-5.15.13-rt26/drivers/misc/hi6421v600-irq.c
===================================================================
@ linux-5.15.13-rt26/drivers/misc/hi6421v600-irq.c:121 @ static irqreturn_t hi6421v600_irq_handle
 			 * If both powerkey down and up IRQs are received,
 			 * handle them at the right order
 			 */
-			generic_handle_irq(priv->irqs[POWERKEY_DOWN]);
-			generic_handle_irq(priv->irqs[POWERKEY_UP]);
+			generic_handle_irq_safe(priv->irqs[POWERKEY_DOWN]);
+			generic_handle_irq_safe(priv->irqs[POWERKEY_UP]);
 			pending &= ~HISI_IRQ_POWERKEY_UP_DOWN;
 		}
 
@ linux-5.15.13-rt26/drivers/misc/hi6421v600-irq.c:130 @ static irqreturn_t hi6421v600_irq_handle
 			continue;
 
 		for_each_set_bit(offset, &pending, BITS_PER_BYTE) {
-			generic_handle_irq(priv->irqs[offset + i * BITS_PER_BYTE]);
+			generic_handle_irq_safe(priv->irqs[offset + i * BITS_PER_BYTE]);
 		}
 	}