linux-kernel - [PATCH] irq/generic-chip: fix the irq

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Message-Id: <20230925121734.93017-1-keguang.zhang@gmail.com>
Date:   Mon, 25 Sep 2023 20:17:34 +0800
From:   Keguang Zhang <keguang.zhang@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Keguang Zhang <keguang.zhang@...il.com>
Subject: [PATCH] irq/generic-chip: fix the irq_chip name for /proc/interrupts

irq_init_generic_chip() only sets name for the first chip type,
which will lead to empty names for other chip types.
Eventually, these names will be shown as "-" /proc/interrupts.

This patch sets name for all chip types by default.

Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
---
 kernel/irq/generic-chip.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/irq/generic-chip.c b/kernel/irq/generic-chip.c
index c653cd31548d..81ecca08caad 100644
--- a/kernel/irq/generic-chip.c
+++ b/kernel/irq/generic-chip.c
@@ -219,11 +219,15 @@ void irq_init_generic_chip(struct irq_chip_generic *gc, const char *name,
 			   int num_ct, unsigned int irq_base,
 			   void __iomem *reg_base, irq_flow_handler_t handler)
 {
+	struct irq_chip_type *ct = gc->chip_types;
+	int i;
+
 	raw_spin_lock_init(&gc->lock);
 	gc->num_ct = num_ct;
 	gc->irq_base = irq_base;
 	gc->reg_base = reg_base;
-	gc->chip_types->chip.name = name;
+	for (i = 0; i < num_ct; i++)
+		ct[i].chip.name = name;
 	gc->chip_types->handler = handler;
 }
 

base-commit: 8fff9184d1b5810dca5dd1a02726d4f844af88fc
-- 
2.39.2