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Subject[PATCH] irq_work: irq_work_queue function return value not used.
Date
From: anish kumar <anish198519851985@gmail.com>

As no one is using the return value of irq_work_queue function
it is better to just make it void.

Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: anish kumar <anish198519851985@gmail.com>
[fix stale comments, remove now unnecessary __irq_work_queue
intermediate function]
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
---
include/linux/irq_work.h | 2 +-
kernel/irq_work.c | 31 ++++++++++---------------------
2 files changed, 11 insertions(+), 22 deletions(-)

diff --git a/include/linux/irq_work.h b/include/linux/irq_work.h
index 6a9e8f5..ce60c08 100644
--- a/include/linux/irq_work.h
+++ b/include/linux/irq_work.h
@@ -16,7 +16,7 @@ void init_irq_work(struct irq_work *work, void (*func)(struct irq_work *))
work->func = func;
}

-bool irq_work_queue(struct irq_work *work);
+void irq_work_queue(struct irq_work *work);
void irq_work_run(void);
void irq_work_sync(struct irq_work *work);

diff --git a/kernel/irq_work.c b/kernel/irq_work.c
index 64eddd5..c9d7478 100644
--- a/kernel/irq_work.c
+++ b/kernel/irq_work.c
@@ -63,12 +63,20 @@ void __weak arch_irq_work_raise(void)
}

/*
- * Queue the entry and raise the IPI if needed.
+ * Enqueue the irq_work @entry unless it's already pending
+ * somewhere.
+ *
+ * Can be re-enqueued while the callback is still in progress.
*/
-static void __irq_work_queue(struct irq_work *work)
+void irq_work_queue(struct irq_work *work)
{
bool empty;

+ /* Only queue if not already pending */
+ if (!irq_work_claim(work))
+ return;
+
+ /* Queue the entry and raise the IPI if needed. */
preempt_disable();

empty = llist_add(&work->llnode, &__get_cpu_var(irq_work_list));
@@ -78,25 +86,6 @@ static void __irq_work_queue(struct irq_work *work)

preempt_enable();
}
-
-/*
- * Enqueue the irq_work @entry, returns true on success, failure when the
- * @entry was already enqueued by someone else.
- *
- * Can be re-enqueued while the callback is still in progress.
- */
-bool irq_work_queue(struct irq_work *work)
-{
- if (!irq_work_claim(work)) {
- /*
- * Already enqueued, can't do!
- */
- return false;
- }
-
- __irq_work_queue(work);
- return true;
-}
EXPORT_SYMBOL_GPL(irq_work_queue);

/*
--
1.7.5.4


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