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can: pcan_usb: fix wrong memcpy() bytes length 

Fix possibly wrong memcpy() bytes length since some CAN records received from
PCAN-USB could define a DLC field in range [9..15].
In that case, the real DLC value MUST be used to move forward the record pointer
but, only 8 bytes max. MUST be copied into the data field of the struct
can_frame object of the skb given to the network core.

Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Stephane Grosjean <s.grosjean@peak-system.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Stephane Grosjean 2013-08-09 11:44:06 +02:00 committed by David S. Miller
parent 29d7919692
commit 3c322a56b0
1 changed files with 1 additions and 1 deletions
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2
drivers/net/can/usb/peak_usb/pcan_usb.c
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@ -649,7 +649,7 @@ static int pcan_usb_decode_data(struct pcan_usb_msg_context *mc, u8 status_len)
if ((mc->ptr + rec_len) > mc->end)
goto decode_failed;
memcpy(cf->data, mc->ptr, rec_len);
memcpy(cf->data, mc->ptr, cf->can_dlc);
mc->ptr += rec_len;
}