apm-emulation: BKL pushdown

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

diff --git a/drivers/char/apm-emulation.c b/drivers/char/apm-emulation.c
index cdd876dbb2b0f77ab05e27c37f0671724743537c..da8a1658a273b6253172b0622631796c4af137f0 100644 (file)
--- a/drivers/char/apm-emulation.c
+++ b/drivers/char/apm-emulation.c
@@ -13,6 +13,7 @@
 #include <linux/module.h>
 #include <linux/poll.h>
 #include <linux/slab.h>
+#include <linux/smp_lock.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/miscdevice.h>
@@ -416,6 +417,7 @@ static int apm_open(struct inode * inode, struct file * filp)
 {
        struct apm_user *as;
 
+       lock_kernel();
        as = kzalloc(sizeof(*as), GFP_KERNEL);
        if (as) {
                /*
@@ -435,6 +437,7 @@ static int apm_open(struct inode * inode, struct file * filp)
 
                filp->private_data = as;
        }
+       unlock_kernel();
 
        return as ? 0 : -ENOMEM;
 }