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s390/qeth: limit trace to valid data of command request

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'len' specifies how much data we send to the HW, don't dump beyond this
boundary.
As of today this is no big concern - commands are built in full, zeroed
pages.

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Julian Wiedmann 2019-02-12 18:33:20 +01:00 committed by David S. Miller
parent 4386e34fab
commit 51581fd07d
1 changed files with 1 additions and 1 deletions
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drivers/s390/net/qeth_core_main.c
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@ -1991,7 +1991,7 @@ void qeth_prepare_control_data(struct qeth_card *card, int len,
card->seqno.pdu_hdr++;
memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
&card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN);
QETH_DBF_HEX(CTRL, 2, iob->data, min(len, QETH_DBF_CTRL_LEN));
}
EXPORT_SYMBOL_GPL(qeth_prepare_control_data);