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path: root/drivers/nfc/pn533.c
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Diffstat (limited to 'drivers/nfc/pn533.c')
-rw-r--r--drivers/nfc/pn533.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 30ae18a..ada681b 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -84,6 +84,10 @@ MODULE_DEVICE_TABLE(usb, pn533_table);
#define PN533_LISTEN_TIME 2
/* frame definitions */
+#define PN533_NORMAL_FRAME_MAX_LEN 262 /* 6 (PREAMBLE, SOF, LEN, LCS, TFI)
+ 254 (DATA)
+ 2 (DCS, postamble) */
+
#define PN533_FRAME_TAIL_SIZE 2
#define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \
PN533_FRAME_TAIL_SIZE)
@@ -1166,8 +1170,7 @@ static void pn533_poll_create_mod_list(struct pn533 *dev,
pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
}
-static int pn533_start_poll_complete(struct pn533 *dev, void *arg,
- u8 *params, int params_len)
+static int pn533_start_poll_complete(struct pn533 *dev, u8 *params, int params_len)
{
struct pn533_poll_response *resp;
int rc;
@@ -1305,8 +1308,7 @@ static void pn533_wq_tg_get_data(struct work_struct *work)
}
#define ATR_REQ_GB_OFFSET 17
-static int pn533_init_target_complete(struct pn533 *dev, void *arg,
- u8 *params, int params_len)
+static int pn533_init_target_complete(struct pn533 *dev, u8 *params, int params_len)
{
struct pn533_cmd_init_target_response *resp;
u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb;
@@ -1403,9 +1405,9 @@ static int pn533_poll_complete(struct pn533 *dev, void *arg,
if (cur_mod->len == 0) {
del_timer(&dev->listen_timer);
- return pn533_init_target_complete(dev, arg, params, params_len);
+ return pn533_init_target_complete(dev, params, params_len);
} else {
- rc = pn533_start_poll_complete(dev, arg, params, params_len);
+ rc = pn533_start_poll_complete(dev, params, params_len);
if (!rc)
return rc;
}
@@ -2376,9 +2378,9 @@ static int pn533_probe(struct usb_interface *interface,
goto error;
}
- dev->in_frame = kmalloc(dev->in_maxlen, GFP_KERNEL);
+ dev->in_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
- dev->out_frame = kmalloc(dev->out_maxlen, GFP_KERNEL);
+ dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!dev->in_frame || !dev->out_frame ||
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