X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=arch%2Fmips%2Fkernel%2Fvpe.c;h=a1b3da6bad5cb17c577712ac4bf83f439b5d7292;hb=8ebcfc8bcb55261cf01fc302d707fbba46242bf1;hp=2794501ff302923b38afe00c3e90531379307bf2;hpb=a177ba3b7a08beef3f0fe74efa0f90701891945a;p=linux-2.6-omap-h63xx.git

diff --git a/arch/mips/kernel/vpe.c b/arch/mips/kernel/vpe.c
index 2794501ff30..a1b3da6bad5 100644
--- a/arch/mips/kernel/vpe.c
+++ b/arch/mips/kernel/vpe.c
@@ -38,6 +38,7 @@
 #include <linux/vmalloc.h>
 #include <linux/elf.h>
 #include <linux/seq_file.h>
+#include <linux/smp_lock.h>
 #include <linux/syscalls.h>
 #include <linux/moduleloader.h>
 #include <linux/interrupt.h>
@@ -1050,17 +1051,20 @@ static int vpe_open(struct inode *inode, struct file *filp)
 	enum vpe_state state;
 	struct vpe_notifications *not;
 	struct vpe *v;
-	int ret;
+	int ret, err = 0;
 
+	lock_kernel();
 	if (minor != iminor(inode)) {
 		/* assume only 1 device at the moment. */
 		printk(KERN_WARNING "VPE loader: only vpe1 is supported\n");
-		return -ENODEV;
+		err = -ENODEV;
+		goto out;
 	}
 
 	if ((v = get_vpe(tclimit)) == NULL) {
 		printk(KERN_WARNING "VPE loader: unable to get vpe\n");
-		return -ENODEV;
+		err = -ENODEV;
+		goto out;
 	}
 
 	state = xchg(&v->state, VPE_STATE_INUSE);
@@ -1100,6 +1104,8 @@ static int vpe_open(struct inode *inode, struct file *filp)
 	v->shared_ptr = NULL;
 	v->__start = 0;
 
+out:
+	unlock_kernel();
 	return 0;
 }
 
@@ -1128,7 +1134,7 @@ static int vpe_release(struct inode *inode, struct file *filp)
 
 	/* It's good to be able to run the SP and if it chokes have a look at
 	   the /dev/rt?. But if we reset the pointer to the shared struct we
-	   loose what has happened. So perhaps if garbage is sent to the vpe
+	   lose what has happened. So perhaps if garbage is sent to the vpe
 	   device, use it as a trigger for the reset. Hopefully a nice
 	   executable will be along shortly. */
 	if (ret < 0)