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NFC: Check if NCI data flow control is used

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Check if NCI data flow control is used in nci_tx_work.

Signed-off-by: Ilan Elias <ilane@ti.com>
Acked-by: Lauro Ramos Venancio <lauro.venancio@openbossa.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Ilan Elias 2011-11-09 12:09:16 +02:00 committed by John W. Linville
parent ee4c64fb98
commit db98c829b7
2 changed files with 7 additions and 1 deletions
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3
include/net/nfc/nci.h
View file

@ -108,6 +108,9 @@
/* NCI Static RF connection ID */
#define NCI_STATIC_RF_CONN_ID 0x00
/* NCI Data Flow Control */
#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
/* NCI RF_DISCOVER_MAP_CMD modes */
#define NCI_DISC_MAP_MODE_POLL 0x01
#define NCI_DISC_MAP_MODE_LISTEN 0x02

5
net/nfc/nci/core.c
View file

@ -722,7 +722,10 @@ static void nci_tx_work(struct work_struct *work)
if (!skb)
return;
atomic_dec(&ndev->credits_cnt);
/* Check if data flow control is used */
if (atomic_read(&ndev->credits_cnt) !=
NCI_DATA_FLOW_CONTROL_NOT_USED)
atomic_dec(&ndev->credits_cnt);
nfc_dbg("NCI TX: MT=data, PBF=%d, conn_id=%d, plen=%d",
nci_pbf(skb->data),