linux-kernel - [PATCH] irq: action setting before irq

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Message-Id: <1452340701-20697-1-git-send-email-ysato@users.sourceforge.jp>
Date:	Sat,  9 Jan 2016 20:58:21 +0900
From:	Yoshinori Sato <ysato@...rs.sourceforge.jp>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] irq: action setting before irq_startup

In non shared and non threaded IRQ case.
irq_startup calling before desc->action initialize.

Signed-off-by: Yoshinori Sato <ysato@...rs.sourceforge.jp>
---
 kernel/irq/manage.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 0eebaee..f6cdb63 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1272,6 +1272,8 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 		goto out_mask;
 	}
 
+	*old_ptr = new;
+
 	if (!shared) {
 		ret = irq_request_resources(desc);
 		if (ret) {
@@ -1328,8 +1330,6 @@ __setup_irq(unsigned int irq, struct irq_desc *desc, struct irqaction *new)
 				   irq, nmsk, omsk);
 	}
 
-	*old_ptr = new;
-
 	irq_pm_install_action(desc, new);
 
 	/* Reset broken irq detection when installing new handler */
-- 
2.6.1