[tip: irq/core] genirq: Add missing __must_hold() sparse annotation

[tip-bot2 for Jules Irenge]

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     099368bb10c0e340f0b236b169e8b13235e0907c
Gitweb:        https://git.kernel.org/tip/099368bb10c0e340f0b236b169e8b13235e0907c
Author:        Jules Irenge <jbi.octave@xxxxxxxxx>
AuthorDate:    Mon, 16 Dec 2019 14:42:08 
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 09 Jan 2020 18:03:37 +01:00

genirq: Add missing __must_hold() sparse annotation

Add __must_hold() annotation to address the following sparse warning:

  warning: context imbalance in irq_wait_for_poll - unexpected unlock

Signed-off-by: Jules Irenge <jbi.octave@xxxxxxxxx>
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20191216144208.29852-2-jbi.octave@xxxxxxxxx
---
 kernel/irq/spurious.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index 2ed97a7..f865e5f 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -34,6 +34,7 @@ static atomic_t irq_poll_active;
  * true and let the handler run.
  */
 bool irq_wait_for_poll(struct irq_desc *desc)
+	__must_hold(&desc->lock)
 {
 	if (WARN_ONCE(irq_poll_cpu == smp_processor_id(),
 		      "irq poll in progress on cpu %d for irq %d\n",