X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fsbus%2Fchar%2Fbpp.c;h=bba21e053a1bfd4d237ec873efa1ef74acc655a1;hb=c010b2f76c3032e48097a6eef291d8593d5d79a6;hp=03c966059471d12938f41ddf876f97a22d1343b4;hpb=766d02786ecd22932beeb9ca8bad6d8c5a552ef9;p=linux-2.6

diff --git a/drivers/sbus/char/bpp.c b/drivers/sbus/char/bpp.c
index 03c9660594..bba21e053a 100644
--- a/drivers/sbus/char/bpp.c
+++ b/drivers/sbus/char/bpp.c
@@ -19,6 +19,7 @@
 #include <linux/timer.h>
 #include <linux/ioport.h>
 #include <linux/major.h>
+#include <linux/smp_lock.h>
 
 #include <asm/uaccess.h>
 #include <asm/io.h>
@@ -429,6 +430,7 @@ static int bpp_open(struct inode *inode, struct file *f)
       unsigned minor = iminor(inode);
       int ret;
 
+      lock_kernel();
       spin_lock(&bpp_open_lock);
       ret = 0;
       if (minor >= BPP_NO) {
@@ -444,6 +446,7 @@ static int bpp_open(struct inode *inode, struct file *f)
 	      }
       }
       spin_unlock(&bpp_open_lock);
+      unlock_kernel();
 
       return ret;
 }