X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fsbus%2Fchar%2Fjsflash.c;h=a9a9893a5f95b4867328b9396e2e097071e428ba;hb=54074d59320581a6d7e4f4dd405e8cac1d174b75;hp=4b7079fdc10c8cfa322083894f0d3fdf28e534a2;hpb=6a302358d87fedaf7bda12b8e909265ebf1ce674;p=linux-2.6-omap-h63xx.git

diff --git a/drivers/sbus/char/jsflash.c b/drivers/sbus/char/jsflash.c
index 4b7079fdc10..a9a9893a5f9 100644
--- a/drivers/sbus/char/jsflash.c
+++ b/drivers/sbus/char/jsflash.c
@@ -27,6 +27,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/smp_lock.h>
 #include <linux/types.h>
 #include <linux/errno.h>
 #include <linux/miscdevice.h>
@@ -35,7 +36,6 @@
 #include <linux/poll.h>
 #include <linux/init.h>
 #include <linux/string.h>
-#include <linux/smp_lock.h>
 #include <linux/genhd.h>
 #include <linux/blkdev.h>
 
@@ -417,11 +417,17 @@ static int jsf_mmap(struct file * file, struct vm_area_struct * vma)
 
 static int jsf_open(struct inode * inode, struct file * filp)
 {
-
-	if (jsf0.base == 0) return -ENXIO;
-	if (test_and_set_bit(0, (void *)&jsf0.busy) != 0)
+	lock_kernel();
+	if (jsf0.base == 0) {
+		unlock_kernel();
+		return -ENXIO;
+	}
+	if (test_and_set_bit(0, (void *)&jsf0.busy) != 0) {
+		unlock_kernel();
 		return -EBUSY;
+	}
 
+	unlock_kernel();
 	return 0;	/* XXX What security? */
 }