linux-kernel - [tip: irq/core] genirq/generic-chip: Fix the irq

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Date:   Fri, 13 Oct 2023 10:31:19 -0000
From:   "tip-bot2 for Keguang Zhang" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Keguang Zhang <keguang.zhang@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] genirq/generic-chip: Fix the irq_chip name for
 /proc/interrupts

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     021a8ca2ba23c01487a98ad23b68ac062e14cf32
Gitweb:        https://git.kernel.org/tip/021a8ca2ba23c01487a98ad23b68ac062e14cf32
Author:        Keguang Zhang <keguang.zhang@...il.com>
AuthorDate:    Mon, 25 Sep 2023 20:17:34 +08:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Fri, 13 Oct 2023 12:25:31 +02:00

genirq/generic-chip: Fix the irq_chip name for /proc/interrupts

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

Set the name for all chip types by default.

Signed-off-by: Keguang Zhang <keguang.zhang@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20230925121734.93017-1-keguang.zhang@gmail.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 c653cd3..81ecca0 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;
 }