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From:   Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To:     greybus-dev@lists.linaro.org, linux-i2c@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-staging@lists.linux.dev,
        linux-usb@vger.kernel.org, netdev@vger.kernel.org
Cc:     "David S. Miller" <davem@davemloft.net>,
        Alex Elder <elder@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Hans de Goede <hdegoede@redhat.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Johan Hovold <johan@kernel.org>,
        Lee Jones <lee.jones@linaro.org>,
        Rui Miguel Silva <rmfrfs@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        UNGLinuxDriver@microchip.com, Wolfram Sang <wsa@kernel.org>,
        Woojung Huh <woojung.huh@microchip.com>,
        Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Subject: [PATCH 4/7] mfd: hi6421-spmi-pmic: Use generic_handle_irq_safe().
Date:   Thu, 27 Jan 2022 12:33:00 +0100
Message-Id: <20220127113303.3012207-5-bigeasy@linutronix.de>
In-Reply-To: <20220127113303.3012207-1-bigeasy@linutronix.de>
References: <20220127113303.3012207-1-bigeasy@linutronix.de>
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generic_handle_irq() is invoked from a regular interrupt service
routing. 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() which can be invoked with enabled and disabled
interrupts.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
---
 drivers/misc/hi6421v600-irq.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/hi6421v600-irq.c b/drivers/misc/hi6421v600-irq.c
index 1c763796cf1fa..caa3de37698b0 100644
--- a/drivers/misc/hi6421v600-irq.c
+++ b/drivers/misc/hi6421v600-irq.c
@@ -117,8 +117,8 @@ static irqreturn_t hi6421v600_irq_handler(int irq, void=
 *__priv)
 			 * 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 &=3D ~HISI_IRQ_POWERKEY_UP_DOWN;
 		}
=20
@@ -126,7 +126,7 @@ static irqreturn_t hi6421v600_irq_handler(int irq, void=
 *__priv)
 			continue;
=20
 		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]);
 		}
 	}
=20
--=20
2.34.1