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Diffstat (limited to 'arch/mips64/sgi-ip27/ip27-rtc.c')
-rw-r--r--arch/mips64/sgi-ip27/ip27-rtc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips64/sgi-ip27/ip27-rtc.c b/arch/mips64/sgi-ip27/ip27-rtc.c
index 0e3987296..61fd5421b 100644
--- a/arch/mips64/sgi-ip27/ip27-rtc.c
+++ b/arch/mips64/sgi-ip27/ip27-rtc.c
@@ -34,6 +34,7 @@
#include <linux/init.h>
#include <linux/poll.h>
#include <linux/proc_fs.h>
+#include <linux/smp_lock.h>
#include <asm/m48t35.h>
#include <asm/ioc3.h>
@@ -179,7 +180,9 @@ static int rtc_release(struct inode *inode, struct file *file)
* in use, and clear the data.
*/
+ lock_kernel();
rtc_status &= ~RTC_IS_OPEN;
+ unlock_kernel();
return 0;
}