diff options
Diffstat (limited to 'drivers/macintosh/smu.c')
| -rw-r--r-- | drivers/macintosh/smu.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c index 76dbf25cb70f..96faa799b82a 100644 --- a/drivers/macintosh/smu.c +++ b/drivers/macintosh/smu.c @@ -19,6 +19,7 @@ * the userland interface */ +#include <linux/smp_lock.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/device.h> @@ -1090,10 +1091,12 @@ static int smu_open(struct inode *inode, struct file *file) pp->mode = smu_file_commands; init_waitqueue_head(&pp->wait); + lock_kernel(); spin_lock_irqsave(&smu_clist_lock, flags); list_add(&pp->list, &smu_clist); spin_unlock_irqrestore(&smu_clist_lock, flags); file->private_data = pp; + unlock_kernel(); return 0; } |