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authorIngo Molnar <mingo@elte.hu>2008-07-15 23:12:58 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-15 23:12:58 +0200
commit1e09481365ce248dbb4eb06dad70129bb5807037 (patch)
treec0cff5bef95c8b5e7486f144718ade9a06c284dc /drivers/char/misc.c
parent3e2f69fdd1b00166e7d589bce56b2d36a9e74374 (diff)
parentb9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff)
Merge branch 'linus' into core/softlockup
Conflicts: kernel/softlockup.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/char/misc.c')
-rw-r--r--drivers/char/misc.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/misc.c b/drivers/char/misc.c
index eaace0db0ff..6e1563c3d30 100644
--- a/drivers/char/misc.c
+++ b/drivers/char/misc.c
@@ -49,6 +49,7 @@
#include <linux/device.h>
#include <linux/tty.h>
#include <linux/kmod.h>
+#include <linux/smp_lock.h>
/*
* Head entry for the doubly linked miscdevice list
@@ -118,6 +119,7 @@ static int misc_open(struct inode * inode, struct file * file)
int err = -ENODEV;
const struct file_operations *old_fops, *new_fops = NULL;
+ lock_kernel();
mutex_lock(&misc_mtx);
list_for_each_entry(c, &misc_list, list) {
@@ -155,6 +157,7 @@ static int misc_open(struct inode * inode, struct file * file)
fops_put(old_fops);
fail:
mutex_unlock(&misc_mtx);
+ unlock_kernel();
return err;
}