Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  dsa: fix master interface allmulti/promisc handling
  dsa: fix skb->pkt_type when mac address of slave interface differs
  net: fix setting of skb->tail in skb_recycle_check()
  net: fix /proc/net/snmp as memory corruptor
  mac80211: fix a buffer overrun in station debug code
  netfilter: payload_len is be16, add size of struct rather than size of pointer
  ipv6: fix ip6_mr_init error path
  [4/4] dca: fixup initialization dependency
  [3/4] I/OAT: fix async_tx.callback checking
  [2/4] I/OAT: fix dma_pin_iovec_pages() error handling
  [1/4] I/OAT: fix channel resources free for not allocated channels
  ssb: Fix DMA-API compilation for non-PCI systems
  SSB: hide empty sub menu
  vlan: Fix typos in proc output string
  [netdrvr] usb/hso: Cleanup rfkill error handling
  sfc: Correct address of gPXE boot configuration in EEPROM
  el3_common_init() should be __devinit, not __init
  hso: rfkill type should be WWAN
  mlx4_en: Start port error flow bug fix
  af_key: mark policy as dead before destroying

1 files changed, 6 insertions, 11 deletions

diff --git a/drivers/dma/iovlock.c b/drivers/dma/iovlock.c
index e763d723e4c..9f6fe46a9b8 100644
--- a/drivers/dma/iovlock.c
+++ b/drivers/dma/iovlock.c
@@ -55,7 +55,6 @@ struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len)
 	int nr_iovecs = 0;
 	int iovec_len_used = 0;
 	int iovec_pages_used = 0;
-	long err;
 
 	/* don't pin down non-user-based iovecs */
 	if (segment_eq(get_fs(), KERNEL_DS))
@@ -72,23 +71,21 @@ struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len)
 	local_list = kmalloc(sizeof(*local_list)
 		+ (nr_iovecs * sizeof (struct dma_page_list))
 		+ (iovec_pages_used * sizeof (struct page*)), GFP_KERNEL);
-	if (!local_list) {
-		err = -ENOMEM;
+	if (!local_list)
 		goto out;
-	}
 
 	/* list of pages starts right after the page list array */
 	pages = (struct page **) &local_list->page_list[nr_iovecs];
 
+	local_list->nr_iovecs = 0;
+
 	for (i = 0; i < nr_iovecs; i++) {
 		struct dma_page_list *page_list = &local_list->page_list[i];
 
 		len -= iov[i].iov_len;
 
-		if (!access_ok(VERIFY_WRITE, iov[i].iov_base, iov[i].iov_len)) {
-			err = -EFAULT;
+		if (!access_ok(VERIFY_WRITE, iov[i].iov_base, iov[i].iov_len))
 			goto unpin;
-		}
 
 		page_list->nr_pages = num_pages_spanned(&iov[i]);
 		page_list->base_address = iov[i].iov_base;
@@ -109,10 +106,8 @@ struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len)
 			NULL);
 		up_read(&current->mm->mmap_sem);
 
-		if (ret != page_list->nr_pages) {
-			err = -ENOMEM;
+		if (ret != page_list->nr_pages)
 			goto unpin;
-		}
 
 		local_list->nr_iovecs = i + 1;
 	}
@@ -122,7 +117,7 @@ struct dma_pinned_list *dma_pin_iovec_pages(struct iovec *iov, size_t len)
 unpin:
 	dma_unpin_iovec_pages(local_list);
 out:
-	return ERR_PTR(err);
+	return NULL;
 }
 
 void dma_unpin_iovec_pages(struct dma_pinned_list *pinned_list)