USB: gadget eth: Fix calculate CRC32 in EEM

CRC should be calculated for Ethernet frame, not for whole recievede EEM data.
This bug shows rarely, because in many times len == skb->len.

Signed-off-by: Jiri Pinkava <jiri.pinkava@vscht.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 38226e9a371d..95dd4662d6a8 100644
--- a/drivers/usb/gadget/f_eem.c
+++ b/drivers/usb/gadget/f_eem.c
@@ -469,8 +469,7 @@ static int eem_unwrap(struct gether *port,
                                 crc = get_unaligned_le32(skb->data + len
                                                         - ETH_FCS_LEN);
                                 crc2 = ~crc32_le(~0,
-                                                skb->data,
-                                                skb->len - ETH_FCS_LEN);
+                                                skb->data, len - ETH_FCS_LEN);
                         } else {
                                 crc = get_unaligned_be32(skb->data + len
                                                         - ETH_FCS_LEN);