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authorJulien Lefrique <lefrique@marvell.com>2014-12-02 16:25:01 +0100
committerSamuel Ortiz <sameo@linux.intel.com>2014-12-02 22:59:28 +0100
commite479ce479743984a5d4581749f9aaa9c3bfd65e4 (patch)
tree54374cdfad53b82596bc835685639ff049b0db77 /net/nfc
parent3ff24012dd28d2b86cea691599a85723d6c19e87 (diff)
downloadlinux-e479ce479743984a5d4581749f9aaa9c3bfd65e4.tar.bz2
NFC: NCI: Fix max length of General Bytes in ATR_RES
The maximum size of ATR_REQ and ATR_RES is 64 bytes. The maximum number of General Bytes is calculated by the maximum number of data bytes in the ATR_REQ/ATR_RES, substracted by the number of mandatory data bytes. ATR_REQ: 16 mandatory data bytes, giving a maximum of 48 General Bytes. ATR_RES: 17 mandatory data bytes, giving a maximum of 47 General Bytes. Regression introduced in commit a99903ec. Signed-off-by: Julien Lefrique <lefrique@marvell.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'net/nfc')
-rw-r--r--net/nfc/nci/ntf.c8
1 files changed, 3 insertions, 5 deletions
diff --git a/net/nfc/nci/ntf.c b/net/nfc/nci/ntf.c
index 8dee73d0c4e1..22e453cb787d 100644
--- a/net/nfc/nci/ntf.c
+++ b/net/nfc/nci/ntf.c
@@ -479,24 +479,22 @@ static int nci_store_general_bytes_nfc_dep(struct nci_dev *ndev,
switch (ntf->activation_rf_tech_and_mode) {
case NCI_NFC_A_PASSIVE_POLL_MODE:
case NCI_NFC_F_PASSIVE_POLL_MODE:
- /* ATR_RES general bytes at offset 15 */
ndev->remote_gb_len = min_t(__u8,
(ntf->activation_params.poll_nfc_dep.atr_res_len
- NFC_ATR_RES_GT_OFFSET),
- NFC_MAX_GT_LEN);
+ NFC_ATR_RES_GB_MAXSIZE);
memcpy(ndev->remote_gb,
- (ntf->activation_params.poll_nfc_dep .atr_res
+ (ntf->activation_params.poll_nfc_dep.atr_res
+ NFC_ATR_RES_GT_OFFSET),
ndev->remote_gb_len);
break;
case NCI_NFC_A_PASSIVE_LISTEN_MODE:
case NCI_NFC_F_PASSIVE_LISTEN_MODE:
- /* ATR_REQ general bytes at offset 14 */
ndev->remote_gb_len = min_t(__u8,
(ntf->activation_params.listen_nfc_dep.atr_req_len
- NFC_ATR_REQ_GT_OFFSET),
- NFC_MAX_GT_LEN);
+ NFC_ATR_REQ_GB_MAXSIZE);
memcpy(ndev->remote_gb,
(ntf->activation_params.listen_nfc_dep.atr_req
+ NFC_ATR_REQ_GT_OFFSET),