X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fmacintosh%2Fsmu.c;h=32cb0298f88e8b2b3f1def71e83f0e801fd1a159;hb=e4e0fadcd929138aa82130a1c5f22206d86d7bb2;hp=d86d57af282abde6bca52d369e480ca543651746;hpb=93022136fff9e6130aa128a5ed8a599e93ac813c;p=linux-2.6

diff --git a/drivers/macintosh/smu.c b/drivers/macintosh/smu.c
index d86d57af28..32cb0298f8 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>
@@ -1086,10 +1087,12 @@ 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;
 }