linux-kernel - [PATCH 1/3] genirq/chip: Add buslock back in to irq_set

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Message-ID: <20251023154901.1333755-2-ckeepax@opensource.cirrus.com>
Date: Thu, 23 Oct 2025 16:48:59 +0100
From: Charles Keepax <ckeepax@...nsource.cirrus.com>
To: tglx@...utronix.de
Cc: peterz@...radead.org, broonie@...nel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] genirq/chip: Add buslock back in to irq_set_handler()

The locking was changed from a buslock to a plain lock, but the patch
description states there was no functional change. Assuming this was
accidental so reverting to using the buslock.

Fixes: 5cd05f3e2315 ("genirq/chip: Rework irq_set_handler() variants")
Signed-off-by: Charles Keepax <ckeepax@...nsource.cirrus.com>
---
 kernel/irq/chip.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c
index 3ffa0d80ddd19..d1917b28761a3 100644
--- a/kernel/irq/chip.c
+++ b/kernel/irq/chip.c
@@ -1030,7 +1030,7 @@ __irq_do_set_handler(struct irq_desc *desc, irq_flow_handler_t handle,
 void __irq_set_handler(unsigned int irq, irq_flow_handler_t handle, int is_chained,
 		       const char *name)
 {
-	scoped_irqdesc_get_and_lock(irq, 0)
+	scoped_irqdesc_get_and_buslock(irq, 0)
 		__irq_do_set_handler(scoped_irqdesc, handle, is_chained, name);
 }
 EXPORT_SYMBOL_GPL(__irq_set_handler);
-- 
2.47.3