diff mbox series

um: chan_kern: use raw spinlock for irqs_to_free_lock

Message ID 20250505103358.ae7dc659f8b4.I64ca7aece30e0b4b0b5b35ad89cdd63db197c0ce@changeid
State Accepted
Headers show
Series um: chan_kern: use raw spinlock for irqs_to_free_lock | expand

Commit Message

Johannes Berg May 5, 2025, 8:33 a.m. UTC 
From: Johannes Berg <johannes.berg@intel.com>

Since this is called deep in the ARCH=um IRQ infrastructure
it must use a raw spinlock. It's not really part of the
driver, but rather the core UML IRQ code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
---
 arch/um/drivers/chan_kern.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index e78a99816c86..26442db7d608 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -212,7 +212,7 @@  int enable_chan(struct line *line)
  * be permanently disabled.  This is discovered in IRQ context, but
  * the freeing of the IRQ must be done later.
  */
-static DEFINE_SPINLOCK(irqs_to_free_lock);
+static DEFINE_RAW_SPINLOCK(irqs_to_free_lock);
 static LIST_HEAD(irqs_to_free);
 
 void free_irqs(void)
@@ -222,9 +222,9 @@  void free_irqs(void)
 	struct list_head *ele;
 	unsigned long flags;
 
-	spin_lock_irqsave(&irqs_to_free_lock, flags);
+	raw_spin_lock_irqsave(&irqs_to_free_lock, flags);
 	list_splice_init(&irqs_to_free, &list);
-	spin_unlock_irqrestore(&irqs_to_free_lock, flags);
+	raw_spin_unlock_irqrestore(&irqs_to_free_lock, flags);
 
 	list_for_each(ele, &list) {
 		chan = list_entry(ele, struct chan, free_list);
@@ -246,9 +246,9 @@  static void close_one_chan(struct chan *chan, int delay_free_irq)
 		return;
 
 	if (delay_free_irq) {
-		spin_lock_irqsave(&irqs_to_free_lock, flags);
+		raw_spin_lock_irqsave(&irqs_to_free_lock, flags);
 		list_add(&chan->free_list, &irqs_to_free);
-		spin_unlock_irqrestore(&irqs_to_free_lock, flags);
+		raw_spin_unlock_irqrestore(&irqs_to_free_lock, flags);
 	} else {
 		if (chan->input && chan->enabled)
 			um_free_irq(chan->line->read_irq, chan);