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@rock-chips.com>
Cc: Jon Hunter <jonathanh@nvidia.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1471854112-13006-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 73a2b78..9530fcd 100644 (file)
--- 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);