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NFC: pn533: Add MI/TG bits only when in Initiator mode

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The fragmentation routine (used to split big frames) could be used in
target or initiator mode (TgSetMetaData vs InDataExchange), but the
MI/TG bytes are not needed in target mode (TgSetMetaData), so we
add a check on the mode

Signed-off-by: Olivier Guiter <olivier.guiter@linux.intel.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Olivier Guiter 2013-09-23 12:24:37 +02:00 committed by Samuel Ortiz
parent 2bed278517
commit 22953f9329
1 changed files with 10 additions and 7 deletions
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17
drivers/nfc/pn533.c
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@ -2504,14 +2504,17 @@ static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb)
break;
}
/* Reserve the TG/MI byte */
skb_reserve(frag, 1);
if (!dev->tgt_mode) {
/* Reserve the TG/MI byte */
skb_reserve(frag, 1);
/* MI + TG */
if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
*skb_push(frag, sizeof(u8)) = (PN533_CMD_MI_MASK | 1);
else
*skb_push(frag, sizeof(u8)) = 1; /* TG */
/* MI + TG */
if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
*skb_push(frag, sizeof(u8)) =
(PN533_CMD_MI_MASK | 1);
else
*skb_push(frag, sizeof(u8)) = 1; /* TG */
}
memcpy(skb_put(frag, frag_size), skb->data, frag_size);