Commit 8844aad8 authored Jun 30, 2014 by Keith Busch Committed by Thomas Gleixner Jul 05, 2014

genirq: Fix memory leak when calling irq_free_hwirqs()



irq_free_hwirqs() always calls irq_free_descs() with a cnt == 0
which makes it a no-op since the interrupt count to free is
decremented in itself.

Fixes: 7b6ef126

Signed-off-by: Keith Busch <keith.busch@intel.com>
Acked-by: David Rientjes <rientjes@google.com>
Link: http://lkml.kernel.org/r/1404167084-8070-1-git-send-email-keith.busch@intel.com


Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

parent 4f436603

kernel/irq/irqdesc.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -455,9 +455,9 @@ EXPORT_SYMBOL_GPL(irq_alloc_hwirqs);
		*/
		void irq_free_hwirqs(unsigned int from, int cnt)
		{
		int i;
		int i, j;

		for (i = from; cnt > 0; i++, cnt--) {
		for (i = from, j = cnt; j > 0; i++, j--) {
		irq_set_status_flags(i, _IRQ_NOREQUEST \| _IRQ_NOPROBE);
		arch_teardown_hwirq(i);
		}