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Commit 03ab7461 authored by Jiri Pinkava's avatar Jiri Pinkava Committed by Greg Kroah-Hartman
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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: default avatarJiri Pinkava <jiri.pinkava@vscht.cz>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 0d152de5

drivers/usb/gadget/f_eem.c

+1 −2
Original line number Original line Diff line number Diff line
@@ -469,8 +469,7 @@ static int eem_unwrap(struct gether *port, 
				crc = get_unaligned_le32(skb->data + len

				crc = get_unaligned_le32(skb->data + len

							- ETH_FCS_LEN);

							- ETH_FCS_LEN);

				crc2 = ~crc32_le(~0,

				crc2 = ~crc32_le(~0,

						skb->data,

						skb->data, len - ETH_FCS_LEN);

						skb->len - ETH_FCS_LEN);

			} else {

			} else {

				crc = get_unaligned_be32(skb->data + len

				crc = get_unaligned_be32(skb->data + len

							- ETH_FCS_LEN);

							- ETH_FCS_LEN);