linux-kernel - [PATCH] genirq: call cancel_work_sync from irq_set_affinity

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Date:   Wed, 20 Mar 2019 15:00:11 -0700
From:   Prasad Sodagudi <psodagud@...eaurora.org>
To:     tglx@...utronix.de
Cc:     linux-kernel@...r.kernel.org, psodagud@...eaurora.org
Subject: [PATCH] genirq: call cancel_work_sync from irq_set_affinity_notifier

When ever notification of IRQ affinity changes, call
cancel_work_sync from irq_set_affinity_notifier to cancel
all pending works to avoid work list corruption.

Signed-off-by: Prasad Sodagudi <psodagud@...eaurora.org>
---
 kernel/irq/manage.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 9ec34a2..da8b2ee 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -356,6 +356,9 @@ static void irq_affinity_notify(struct work_struct *work)
 	desc->affinity_notify = notify;
 	raw_spin_unlock_irqrestore(&desc->lock, flags);
 
+	if (!notify && old_notify)
+		cancel_work_sync(&old_notify->work);
+
 	if (old_notify)
 		kref_put(&old_notify->kref, old_notify->release);
 
-- 
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