vhost: fix sparse warnings

Commit Message

Christoph Hellwig April 13, 2010, 6:11 p.m. UTC

None

Patch

Index: linux-2.6/drivers/vhost/net.c
===================================================================
--- linux-2.6.orig/drivers/vhost/net.c	2010-04-05 21:13:24.196004388 +0200
+++ linux-2.6/drivers/vhost/net.c	2010-04-05 21:13:32.726004109 +0200
@@ -641,7 +641,7 @@  static struct miscdevice vhost_net_misc
 	&vhost_net_fops,
 };
 
-int vhost_net_init(void)
+static int vhost_net_init(void)
 {
 	int r = vhost_init();
 	if (r)
@@ -658,7 +658,7 @@  err_init:
 }
 module_init(vhost_net_init);
 
-void vhost_net_exit(void)
+static void vhost_net_exit(void)
 {
 	misc_deregister(&vhost_net_misc);
 	vhost_cleanup();
Index: linux-2.6/drivers/vhost/vhost.c
===================================================================
--- linux-2.6.orig/drivers/vhost/vhost.c	2010-04-05 21:12:58.806004249 +0200
+++ linux-2.6/drivers/vhost/vhost.c	2010-04-05 21:14:44.681010674 +0200
@@ -710,7 +710,7 @@  int vhost_log_write(struct vhost_virtque
 	return 0;
 }
 
-int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
+static int translate_desc(struct vhost_dev *dev, u64 addr, u32 len,
 		   struct iovec iov[], int iov_size)
 {
 	const struct vhost_memory_region *reg;
@@ -736,7 +736,7 @@  int translate_desc(struct vhost_dev *dev
 		_iov = iov + ret;
 		size = reg->memory_size - addr + reg->guest_phys_addr;
 		_iov->iov_len = min((u64)len, size);
-		_iov->iov_base = (void *)(unsigned long)
+		_iov->iov_base = (void __user *)(unsigned long)
 			(reg->userspace_addr + addr - reg->guest_phys_addr);
 		s += size;
 		addr += size;
@@ -990,7 +990,7 @@  void vhost_discard_vq_desc(struct vhost_
  * want to notify the guest, using eventfd. */
 int vhost_add_used(struct vhost_virtqueue *vq, unsigned int head, int len)
 {
-	struct vring_used_elem *used;
+	struct vring_used_elem __user *used;
 
 	/* The virtqueue contains a ring of used buffers.  Get a pointer to the
 	 * next entry in that used ring. */
@@ -1014,7 +1014,8 @@  int vhost_add_used(struct vhost_virtqueu
 		smp_wmb();
 		/* Log used ring entry write. */
 		log_write(vq->log_base,
-			  vq->log_addr + ((void *)used - (void *)vq->used),
+			  vq->log_addr +
+			   ((void __user *)used - (void __user *)vq->used),
 			  sizeof *used);
 		/* Log used index update. */
 		log_write(vq->log_base,