From: Arnd Bergmann <arnd@arndb.de>
Date: Tue, 20 May 2008 17:15:59 +0000 (+0200)
Subject: hpet: BKL pushdown
X-Git-Tag: v2.6.27-rc1~1103^2~59
X-Git-Url: http://www.pilppa.org/gitweb/gitweb.cgi?a=commitdiff_plain;h=48b81880519274d2a8b3e9919a47d91d05a1c964;p=linux-2.6-omap-h63xx.git

hpet: BKL pushdown

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index e7fb0bca366..fb0a85a1eb3 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/miscdevice.h>
 #include <linux/major.h>
@@ -193,6 +194,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 	if (file->f_mode & FMODE_WRITE)
 		return -EINVAL;
 
+	lock_kernel();
 	spin_lock_irq(&hpet_lock);
 
 	for (devp = NULL, hpetp = hpets; hpetp && !devp; hpetp = hpetp->hp_next)
@@ -207,6 +209,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 
 	if (!devp) {
 		spin_unlock_irq(&hpet_lock);
+		unlock_kernel();
 		return -EBUSY;
 	}
 
@@ -214,6 +217,7 @@ static int hpet_open(struct inode *inode, struct file *file)
 	devp->hd_irqdata = 0;
 	devp->hd_flags |= HPET_OPEN;
 	spin_unlock_irq(&hpet_lock);
+	unlock_kernel();
 
 	return 0;
 }