diff options
Diffstat (limited to 'drivers/nfc/port100.c')
| -rw-r--r-- | drivers/nfc/port100.c | 47 |
1 files changed, 25 insertions, 22 deletions
diff --git a/drivers/nfc/port100.c b/drivers/nfc/port100.c index 4df926cc37d0..517376c43b86 100644 --- a/drivers/nfc/port100.c +++ b/drivers/nfc/port100.c @@ -217,7 +217,7 @@ struct port100_protocol { u8 value; } __packed; -static struct port100_protocol +static const struct port100_protocol in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, @@ -391,7 +391,7 @@ in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { }, }; -static struct port100_protocol +static const struct port100_protocol tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { { PORT100_TG_PROT_END, 0 }, @@ -526,7 +526,7 @@ static inline u8 port100_checksum(u16 value) } /* The rule: sum(data elements) + checksum = 0 */ -static u8 port100_data_checksum(u8 *data, int datalen) +static u8 port100_data_checksum(const u8 *data, int datalen) { u8 sum = 0; int i; @@ -568,10 +568,10 @@ static void port100_tx_update_payload_len(void *_frame, int len) le16_add_cpu(&frame->datalen, len); } -static bool port100_rx_frame_is_valid(void *_frame) +static bool port100_rx_frame_is_valid(const void *_frame) { u8 checksum; - struct port100_frame *frame = _frame; + const struct port100_frame *frame = _frame; if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) || frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT)) @@ -589,23 +589,24 @@ static bool port100_rx_frame_is_valid(void *_frame) return true; } -static bool port100_rx_frame_is_ack(struct port100_ack_frame *frame) +static bool port100_rx_frame_is_ack(const struct port100_ack_frame *frame) { return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) && frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK)); } -static inline int port100_rx_frame_size(void *frame) +static inline int port100_rx_frame_size(const void *frame) { - struct port100_frame *f = frame; + const struct port100_frame *f = frame; return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) + PORT100_FRAME_TAIL_LEN; } -static bool port100_rx_frame_is_cmd_response(struct port100 *dev, void *frame) +static bool port100_rx_frame_is_cmd_response(const struct port100 *dev, + const void *frame) { - struct port100_frame *f = frame; + const struct port100_frame *f = frame; return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code)); } @@ -655,7 +656,8 @@ sched_wq: schedule_work(&dev->cmd_complete_work); } -static int port100_submit_urb_for_response(struct port100 *dev, gfp_t flags) +static int port100_submit_urb_for_response(const struct port100 *dev, + gfp_t flags) { dev->in_urb->complete = port100_recv_response; @@ -666,7 +668,7 @@ static void port100_recv_ack(struct urb *urb) { struct port100 *dev = urb->context; struct port100_cmd *cmd = dev->cmd; - struct port100_ack_frame *in_frame; + const struct port100_ack_frame *in_frame; int rc; cmd->status = urb->status; @@ -708,7 +710,7 @@ sched_wq: schedule_work(&dev->cmd_complete_work); } -static int port100_submit_urb_for_ack(struct port100 *dev, gfp_t flags) +static int port100_submit_urb_for_ack(const struct port100 *dev, gfp_t flags) { dev->in_urb->complete = port100_recv_ack; @@ -753,8 +755,9 @@ static int port100_send_ack(struct port100 *dev) return rc; } -static int port100_send_frame_async(struct port100 *dev, struct sk_buff *out, - struct sk_buff *in, int in_len) +static int port100_send_frame_async(struct port100 *dev, + const struct sk_buff *out, + const struct sk_buff *in, int in_len) { int rc; @@ -960,7 +963,7 @@ static void port100_abort_cmd(struct nfc_digital_dev *ddev) usb_kill_urb(dev->in_urb); } -static struct sk_buff *port100_alloc_skb(struct port100 *dev, unsigned int size) +static struct sk_buff *port100_alloc_skb(const struct port100 *dev, unsigned int size) { struct sk_buff *skb; @@ -1098,7 +1101,7 @@ static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf) static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param) { struct port100 *dev = nfc_digital_get_drvdata(ddev); - struct port100_protocol *protocols; + const struct port100_protocol *protocols; struct sk_buff *skb; struct sk_buff *resp; int num_protocols; @@ -1152,7 +1155,7 @@ static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type, static void port100_in_comm_rf_complete(struct port100 *dev, void *arg, struct sk_buff *resp) { - struct port100_cb_arg *cb_arg = arg; + const struct port100_cb_arg *cb_arg = arg; nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; u32 status; int rc; @@ -1255,7 +1258,7 @@ static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) { struct port100 *dev = nfc_digital_get_drvdata(ddev); - struct port100_protocol *protocols; + const struct port100_protocol *protocols; struct sk_buff *skb; struct sk_buff *resp; int rc; @@ -1330,7 +1333,7 @@ static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, struct sk_buff *resp) { u32 status; - struct port100_cb_arg *cb_arg = arg; + const struct port100_cb_arg *cb_arg = arg; nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; struct port100_tg_comm_rf_res *hdr; @@ -1453,7 +1456,7 @@ static int port100_listen_mdaa(struct nfc_digital_dev *ddev, static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, nfc_digital_cmd_complete_t cb, void *arg) { - struct port100 *dev = nfc_digital_get_drvdata(ddev); + const struct port100 *dev = nfc_digital_get_drvdata(ddev); struct sk_buff *skb; skb = port100_alloc_skb(dev, 0); @@ -1463,7 +1466,7 @@ static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); } -static struct nfc_digital_ops port100_digital_ops = { +static const struct nfc_digital_ops port100_digital_ops = { .in_configure_hw = port100_in_configure_hw, .in_send_cmd = port100_in_send_cmd, |