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authorOlivier Guiter <olivier.guiter@linux.intel.com>2013-09-23 12:24:37 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2013-09-25 16:01:03 +0200
commit22953f9329ebf5cc81cefe250a079600145388b3 (patch)
tree9a39d88beb3eb8d8ea802c96272ba08113bfaeb4 /drivers/nfc/pn533.c
parent2bed27851767d93b5d2823eee110857f350a9fbe (diff)
downloadlinux-22953f9329ebf5cc81cefe250a079600145388b3.tar.bz2
NFC: pn533: Add MI/TG bits only when in Initiator mode
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>
Diffstat (limited to 'drivers/nfc/pn533.c')
-rw-r--r--drivers/nfc/pn533.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 75bffd8bb3eb..0b7e928ceb3d 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -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);
-
- /* 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 */
+ 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 */
+ }
memcpy(skb_put(frag, frag_size), skb->data, frag_size);