genirq: Add missing __must_hold() sparse annotation

irenge · KAGA-KOKO · commit 099368bb10c0 · 2020-01-09T18:03:37.000+01:00
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@gmail.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20191216144208.29852-2-jbi.octave@gmail.com
diff --git 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",

Original file line number	Diff line number	Diff line change
`@@ -34,6 +34,7 @@ static atomic_t irq_poll_active;`
`34`	`34`	`* true and let the handler run.`
`35`	`35`	`*/`
`36`	`36`	`bool irq_wait_for_poll(struct irq_desc *desc)`
	`37`	`+ __must_hold(&desc->lock)`
`37`	`38`	`{`
`38`	`39`	`if (WARN_ONCE(irq_poll_cpu == smp_processor_id(),`
`39`	`40`	`"irq poll in progress on cpu %d for irq %d\n",`