linux-kernel - [tip:irq/urgent] genirq/timings: Move free timings out of spinlocked region

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Date:   Tue, 4 Jul 2017 03:49:40 -0700
From:   tip-bot for Thomas Gleixner <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, marc.zyngier@....com,
        linux-kernel@...r.kernel.org, tglx@...utronix.de, heiko@...ech.de,
        john@...anate.com, daniel.lezcano@...aro.org, hpa@...or.com,
        linus.walleij@...aro.org, julia@...com, dianders@...omium.org,
        briannorris@...omium.org
Subject: [tip:irq/urgent] genirq/timings: Move free timings out of
 spinlocked region

Commit-ID:  2343877fbda701599653e63f8dcc318aa1bf15ee
Gitweb:     http://git.kernel.org/tip/2343877fbda701599653e63f8dcc318aa1bf15ee
Author:     Thomas Gleixner <tglx@...utronix.de>
AuthorDate: Thu, 29 Jun 2017 23:33:39 +0200
Committer:  Thomas Gleixner <tglx@...utronix.de>
CommitDate: Tue, 4 Jul 2017 12:46:16 +0200

genirq/timings: Move free timings out of spinlocked region

No point to do memory management from a interrupt disabled spin locked
region.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Reviewed-by: Marc Zyngier <marc.zyngier@....com>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Heiko Stuebner <heiko@...ech.de>
Cc: Julia Cartwright <julia@...com>
Cc: Linus Walleij <linus.walleij@...aro.org>
Cc: Brian Norris <briannorris@...omium.org>
Cc: Doug Anderson <dianders@...omium.org>
Cc: linux-rockchip@...ts.infradead.org
Cc: John Keeping <john@...anate.com>
Cc: linux-gpio@...r.kernel.org
Link: http://lkml.kernel.org/r/20170629214344.196130646@linutronix.de

---
 kernel/irq/manage.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 3e69343..91e1f23 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1489,7 +1489,6 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
 	if (!desc->action) {
 		irq_settings_clr_disable_unlazy(desc);
 		irq_shutdown(desc);
-		irq_remove_timings(desc);
 	}
 
 #ifdef CONFIG_SMP
@@ -1531,8 +1530,10 @@ static struct irqaction *__free_irq(unsigned int irq, void *dev_id)
 		}
 	}
 
-	if (!desc->action)
+	if (!desc->action) {
 		irq_release_resources(desc);
+		irq_remove_timings(desc);
+	}
 
 	mutex_unlock(&desc->request_mutex);