[PATCH 4.11 69/78] genirq: Release resources in __setup_irq() error path

Greg Kroah-Hartman
2017-06-19T15:21:58Z

From: Heiner Kallweit <hkallweit1@gmail.com>

commit fa07ab72cbb0d843429e61bf179308aed6cbe0dd upstream.

In case __irq_set_trigger() fails the resources requested via
irq_request_resources() are not released.

Add the missing release call into the error handling path.

Fixes: c1bacbae8192 ("genirq: Provide irq_request/release_resources chip callbacks")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/655538f5-cb20-a892-ff15-fbd2dd1fa4ec@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
kernel/irq/manage.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -1310,8 +1310,10 @@ __setup_irq(unsigned int irq, struct irq
ret = __irq_set_trigger(desc,
new->flags & IRQF_TRIGGER_MASK);

- if (ret)
+ if (ret) {
+ irq_release_resources(desc);
goto out_mask;
+ }
}

desc->istate &= ~(IRQS_AUTODETECT | IRQS_SPURIOUS_DISABLED | \