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authorKeith Busch <keith.busch@intel.com>2014-06-30 16:24:44 -0600
committerThomas Gleixner <tglx@linutronix.de>2014-07-05 21:42:08 +0200
commit8844aad89ed61545b4db6a3467e1b21ca1c49460 (patch)
tree8517cee7ee48747ed7448eb14bfe81634695cca4 /kernel/irq/irqdesc.c
parent4f4366033945419b0c52118c29d3057d7c558765 (diff)
downloadlinux-8844aad89ed61545b4db6a3467e1b21ca1c49460.tar.gz
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: 7b6ef1262549f6afc5c881aaef80beb8fd15f908 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>
Diffstat (limited to 'kernel/irq/irqdesc.c')
-rw-r--r--kernel/irq/irqdesc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/irq/irqdesc.c b/kernel/irq/irqdesc.c
index 7339e42a85ab..1487a123db5c 100644
--- a/kernel/irq/irqdesc.c
+++ b/kernel/irq/irqdesc.c
@@ -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);
}