linux-kernel - [tip: irq/msi] genirq/msi: Slightly simplify msi_domain

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Message-ID: <176098441506.2601451.3693832213814934444.tip-bot2@tip-bot2>
Date: Mon, 20 Oct 2025 18:20:15 -0000
From: "tip-bot2 for Christophe JAILLET" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
 Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: irq/msi] genirq/msi: Slightly simplify msi_domain_alloc()

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

Commit-ID:     ac646f44956edc9aaa406b4a8fef17888a2166af
Gitweb:        https://git.kernel.org/tip/ac646f44956edc9aaa406b4a8fef17888a2166af
Author:        Christophe JAILLET <christophe.jaillet@...adoo.fr>
AuthorDate:    Sun, 19 Oct 2025 10:40:08 +02:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 20 Oct 2025 20:18:48 +02:00

genirq/msi: Slightly simplify msi_domain_alloc()

The return value of irq_find_mapping() is only tested, not used for
anything else.

Replaced it by irq_resolve_mapping() which is internally used by
irq_find_mapping() and allows a simple boolean decision.

Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://patch.msgid.link/1ce680114cdb8d40b072c54d7f015696a540e5a6.1760863194.git.christophe.jaillet@wanadoo.fr
---
 kernel/irq/msi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c
index e7ad992..6888688 100644
--- a/kernel/irq/msi.c
+++ b/kernel/irq/msi.c
@@ -706,7 +706,7 @@ static int msi_domain_alloc(struct irq_domain *domain, unsigned int virq,
 	irq_hw_number_t hwirq = ops->get_hwirq(info, arg);
 	int i, ret;
 
-	if (irq_find_mapping(domain, hwirq) > 0)
+	if (irq_resolve_mapping(domain, hwirq))
 		return -EEXIST;
 
 	if (domain->parent) {