From: Jiri Pinkava <jiri.pinkava@vscht.cz>
Date: Sun, 20 Jun 2010 18:05:52 +0000 (+0200)
Subject: USB: gadget eth: Fix calculate CRC32 in EEM
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=03ab7461df3c74c9418c3f5485ea1127ece1ff79;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

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>
---

diff --git a/drivers/usb/gadget/f_eem.c b/drivers/usb/gadget/f_eem.c
index 38226e9a371..95dd4662d6a 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);