linux-kernel - [PATCH 05/21] bus: fsl-mc: Use default primary handler

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Message-ID: <20260123113708.416727-6-bigeasy@linutronix.de>
Date: Fri, 23 Jan 2026 12:36:51 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: linux-kernel@...r.kernel.org
Cc: linux-rt-devel@...ts.linux.dev,
	Thomas Gleixner <tglx@...nel.org>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
	Ioana Ciornei <ioana.ciornei@....com>,
	linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 05/21] bus: fsl-mc: Use default primary handler

There is no added value in dprc_irq0_handler() compared to
irq_default_primary_handler().

Use the default primary interrupt handler by specifying NULL.

Cc: Ioana Ciornei <ioana.ciornei@....com>
Cc: linuxppc-dev@...ts.ozlabs.org
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 drivers/bus/fsl-mc/dprc-driver.c | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/bus/fsl-mc/dprc-driver.c b/drivers/bus/fsl-mc/dprc-driver.c
index c63a7e688db6a..db67442addad2 100644
--- a/drivers/bus/fsl-mc/dprc-driver.c
+++ b/drivers/bus/fsl-mc/dprc-driver.c
@@ -380,17 +380,6 @@ int dprc_scan_container(struct fsl_mc_device *mc_bus_dev,
 }
 EXPORT_SYMBOL_GPL(dprc_scan_container);
 
-/**
- * dprc_irq0_handler - Regular ISR for DPRC interrupt 0
- *
- * @irq_num: IRQ number of the interrupt being handled
- * @arg: Pointer to device structure
- */
-static irqreturn_t dprc_irq0_handler(int irq_num, void *arg)
-{
-	return IRQ_WAKE_THREAD;
-}
-
 /**
  * dprc_irq0_handler_thread - Handler thread function for DPRC interrupt 0
  *
@@ -527,7 +516,7 @@ static int register_dprc_irq_handler(struct fsl_mc_device *mc_dev)
 	 */
 	error = devm_request_threaded_irq(&mc_dev->dev,
 					  irq->virq,
-					  dprc_irq0_handler,
+					  NULL,
 					  dprc_irq0_handler_thread,
 					  IRQF_NO_SUSPEND | IRQF_ONESHOT,
 					  dev_name(&mc_dev->dev),
-- 
2.51.0