linux-kernel - [PATCH 6/6] [ARM] Use atomic_spin_lock/atomic_spin

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Message-Id: <1249677761-19470-6-git-send-email-u.kleine-koenig@pengutronix.de>
Date:	Fri,  7 Aug 2009 22:42:41 +0200
From:	Uwe Kleine-König 
	<u.kleine-koenig@...gutronix.de>
To:	Thomas Gleixner <tglx@...utronix.de>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	rt-users <linux-rt-users@...r.kernel.org>
Subject: [PATCH 6/6] [ARM] Use atomic_spin_lock/atomic_spin_unlock for irqdesc lock

This was missed in commit

	fd2bde5 (genirq: Convert irqdesc lock to atomic_spinlock)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 arch/arm/include/asm/mach/irq.h |    4 ++--
 mm/highmem.c                    |    4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/arm/include/asm/mach/irq.h b/arch/arm/include/asm/mach/irq.h
index acac530..3981cf2 100644
--- a/arch/arm/include/asm/mach/irq.h
+++ b/arch/arm/include/asm/mach/irq.h
@@ -26,9 +26,9 @@ extern int show_fiq_list(struct seq_file *, void *);
  */
 #define do_bad_IRQ(irq,desc)				\
 do {							\
-	spin_lock(&desc->lock);				\
+	atomic_spin_lock(&desc->lock);			\
 	handle_bad_irq(irq, desc);			\
-	spin_unlock(&desc->lock);			\
+	atomic_spin_unlock(&desc->lock);		\
 } while(0)
 
 #endif
diff --git a/mm/highmem.c b/mm/highmem.c
index 66e915a..214eefd 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -372,8 +372,8 @@ void *kmap_high_get(struct page *page)
 	lock_kmap_any(flags);
 	vaddr = (unsigned long)page_address(page);
 	if (vaddr) {
-		BUG_ON(pkmap_count[PKMAP_NR(vaddr)] < 1);
-		pkmap_count[PKMAP_NR(vaddr)]++;
+		BUG_ON(atomic_read(&pkmap_count[PKMAP_NR(vaddr)]) < 1);
+		atomic_add(1, pkmap_count[PKMAP_NR(vaddr)]);
 	}
 	unlock_kmap_any(flags);
 	return (void*) vaddr;
-- 
1.6.3.3

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