via-pmu: BKL pushdown

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

diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index d6365a9f0637407f020b901423dd1d06d851edeb..d524dc245a2c18af982e661970ff255199f85a60 100644 (file)
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -18,6 +18,7 @@
  *
  */
 #include <stdarg.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/kernel.h>
@@ -2047,6 +2048,7 @@ pmu_open(struct inode *inode, struct file *file)
        pp->rb_get = pp->rb_put = 0;
        spin_lock_init(&pp->lock);
        init_waitqueue_head(&pp->wait);
+       lock_kernel();
        spin_lock_irqsave(&all_pvt_lock, flags);
 #if defined(CONFIG_INPUT_ADBHID) && defined(CONFIG_PMAC_BACKLIGHT)
        pp->backlight_locker = 0;
@@ -2054,6 +2056,7 @@ pmu_open(struct inode *inode, struct file *file)
        list_add(&pp->list, &all_pmu_pvt);
        spin_unlock_irqrestore(&all_pvt_lock, flags);
        file->private_data = pp;
+       unlock_kernel();
        return 0;
 }