+++ /dev/null
-From d532c1082f68176363ed766d09bf187616e282fe Mon Sep 17 00:00:00 2001
-From: Eric Dumazet <edumazet@google.com>
-Date: Wed, 19 Apr 2017 09:59:23 -0700
-Subject: [PATCH] sr9700: use skb_cow_head() to deal with cloned skbs
-
-We need to ensure there is enough headroom to push extra header,
-but we also need to check if we are allowed to change headers.
-
-skb_cow_head() is the proper helper to deal with this.
-
-Fixes: c9b37458e956 ("USB2NET : SR9700 : One chip USB 1.1 USB2NET SR9700Device Driver Support")
-Signed-off-by: Eric Dumazet <edumazet@google.com>
-Cc: James Hughes <james.hughes@raspberrypi.org>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- drivers/net/usb/sr9700.c | 9 ++-------
- 1 file changed, 2 insertions(+), 7 deletions(-)
-
---- a/drivers/net/usb/sr9700.c
-+++ b/drivers/net/usb/sr9700.c
-@@ -456,14 +456,9 @@ static struct sk_buff *sr9700_tx_fixup(s
-
- len = skb->len;
-
-- if (skb_headroom(skb) < SR_TX_OVERHEAD) {
-- struct sk_buff *skb2;
--
-- skb2 = skb_copy_expand(skb, SR_TX_OVERHEAD, 0, flags);
-+ if (skb_cow_head(skb, SR_TX_OVERHEAD)) {
- dev_kfree_skb_any(skb);
-- skb = skb2;
-- if (!skb)
-- return NULL;
-+ return NULL;
- }
-
- __skb_push(skb, SR_TX_OVERHEAD);