[tip:irq/urgent] genirq: Fix potential memleak when failing to get irq pm

[tip-bot for Shawn Lin]

Commit-ID:  4396f46c8c628329bd35ee4b84140b8b001a11eb
Gitweb:     http://git.kernel.org/tip/4396f46c8c628329bd35ee4b84140b8b001a11eb
Author:     Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
AuthorDate: Mon, 22 Aug 2016 16:21:52 +0800
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 22 Aug 2016 11:22:44 +0200

genirq: Fix potential memleak when failing to get irq pm

Obviously we should free action here if irq_chip_pm_get failed.

Fixes: be45beb2df69: "genirq: Add runtime power management support for IRQ chips"
Signed-off-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
Cc: Jon Hunter <jonathanh@xxxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Link: http://lkml.kernel.org/r/1471854112-13006-1-git-send-email-shawn.lin@xxxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>

---
 kernel/irq/manage.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 73a2b78..9530fcd 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1681,8 +1681,10 @@ int request_threaded_irq(unsigned int irq, irq_handler_t handler,
 	action->dev_id = dev_id;
 
 	retval = irq_chip_pm_get(&desc->irq_data);
-	if (retval < 0)
+	if (retval < 0) {
+		kfree(action);
 		return retval;
+	}
 
 	chip_bus_lock(desc);
 	retval = __setup_irq(irq, desc, action);
@@ -1985,8 +1987,10 @@ int request_percpu_irq(unsigned int irq, irq_handler_t handler,
 	action->percpu_dev_id = dev_id;
 
 	retval = irq_chip_pm_get(&desc->irq_data);
-	if (retval < 0)
+	if (retval < 0) {
+		kfree(action);
 		return retval;
+	}
 
 	chip_bus_lock(desc);
 	retval = __setup_irq(irq, desc, action);