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path: root/drivers/bluetooth/hci_bcsp.c
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Diffstat (limited to 'drivers/bluetooth/hci_bcsp.c')
-rw-r--r--drivers/bluetooth/hci_bcsp.c57
1 files changed, 31 insertions, 26 deletions
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 064f2fefad62..d7d23ceba4d1 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -102,13 +102,12 @@ static const u16 crc_table[] = {
/* Initialise the crc calculator */
#define BCSP_CRC_INIT(x) x = 0xffff
-/*
- Update crc with next data byte
-
- Implementation note
- The data byte is treated as two nibbles. The crc is generated
- in reverse, i.e., bits are fed into the register from the top.
-*/
+/* Update crc with next data byte
+ *
+ * Implementation note
+ * The data byte is treated as two nibbles. The crc is generated
+ * in reverse, i.e., bits are fed into the register from the top.
+ */
static void bcsp_crc_update(u16 *crc, u8 d)
{
u16 reg = *crc;
@@ -223,9 +222,10 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
}
/* Max len of packet: (original len +4(bcsp hdr) +2(crc))*2
- (because bytes 0xc0 and 0xdb are escaped, worst case is
- when the packet is all made of 0xc0 and 0xdb :) )
- + 2 (0xc0 delimiters at start and end). */
+ * (because bytes 0xc0 and 0xdb are escaped, worst case is
+ * when the packet is all made of 0xc0 and 0xdb :) )
+ * + 2 (0xc0 delimiters at start and end).
+ */
nskb = alloc_skb((len + 6) * 2 + 2, GFP_ATOMIC);
if (!nskb)
@@ -285,7 +285,7 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
struct bcsp_struct *bcsp = hu->priv;
unsigned long flags;
struct sk_buff *skb;
-
+
/* First of all, check for unreliable messages in the queue,
since they have priority */
@@ -305,8 +305,9 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
}
/* Now, try to send a reliable pkt. We can only send a
- reliable packet if the number of packets sent but not yet ack'ed
- is < than the winsize */
+ * reliable packet if the number of packets sent but not yet ack'ed
+ * is < than the winsize
+ */
spin_lock_irqsave_nested(&bcsp->unack.lock, flags, SINGLE_DEPTH_NESTING);
@@ -332,12 +333,14 @@ static struct sk_buff *bcsp_dequeue(struct hci_uart *hu)
spin_unlock_irqrestore(&bcsp->unack.lock, flags);
/* We could not send a reliable packet, either because there are
- none or because there are too many unack'ed pkts. Did we receive
- any packets we have not acknowledged yet ? */
+ * none or because there are too many unack'ed pkts. Did we receive
+ * any packets we have not acknowledged yet ?
+ */
if (bcsp->txack_req) {
/* if so, craft an empty ACK pkt and send it on BCSP unreliable
- channel 0 */
+ * channel 0
+ */
struct sk_buff *nskb = bcsp_prepare_pkt(bcsp, NULL, 0, BCSP_ACK_PKT);
return nskb;
}
@@ -399,8 +402,9 @@ static void bcsp_pkt_cull(struct bcsp_struct *bcsp)
}
/* Handle BCSP link-establishment packets. When we
- detect a "sync" packet, symptom that the BT module has reset,
- we do nothing :) (yet) */
+ * detect a "sync" packet, symptom that the BT module has reset,
+ * we do nothing :) (yet)
+ */
static void bcsp_handle_le_pkt(struct hci_uart *hu)
{
struct bcsp_struct *bcsp = hu->priv;
@@ -462,7 +466,7 @@ static inline void bcsp_unslip_one_byte(struct bcsp_struct *bcsp, unsigned char
case 0xdd:
memcpy(skb_put(bcsp->rx_skb, 1), &db, 1);
if ((bcsp->rx_skb->data[0] & 0x40) != 0 &&
- bcsp->rx_state != BCSP_W4_CRC)
+ bcsp->rx_state != BCSP_W4_CRC)
bcsp_crc_update(&bcsp->message_crc, 0xdb);
bcsp->rx_esc_state = BCSP_ESCSTATE_NOESC;
bcsp->rx_count--;
@@ -534,7 +538,7 @@ static void bcsp_complete_rx_pkt(struct hci_uart *hu)
} else {
BT_ERR("Packet for unknown channel (%u %s)",
bcsp->rx_skb->data[1] & 0x0f,
- bcsp->rx_skb->data[0] & 0x80 ?
+ bcsp->rx_skb->data[0] & 0x80 ?
"reliable" : "unreliable");
kfree_skb(bcsp->rx_skb);
}
@@ -562,7 +566,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
struct bcsp_struct *bcsp = hu->priv;
const unsigned char *ptr;
- BT_DBG("hu %p count %d rx_state %d rx_count %ld",
+ BT_DBG("hu %p count %d rx_state %d rx_count %ld",
hu, count, bcsp->rx_state, bcsp->rx_count);
ptr = data;
@@ -591,7 +595,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
continue;
}
if (bcsp->rx_skb->data[0] & 0x80 /* reliable pkt */
- && (bcsp->rx_skb->data[0] & 0x07) != bcsp->rxseq_txack) {
+ && (bcsp->rx_skb->data[0] & 0x07) != bcsp->rxseq_txack) {
BT_ERR("Out-of-order packet arrived, got %u expected %u",
bcsp->rx_skb->data[0] & 0x07, bcsp->rxseq_txack);
@@ -601,7 +605,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
continue;
}
bcsp->rx_state = BCSP_W4_DATA;
- bcsp->rx_count = (bcsp->rx_skb->data[1] >> 4) +
+ bcsp->rx_count = (bcsp->rx_skb->data[1] >> 4) +
(bcsp->rx_skb->data[2] << 4); /* May be 0 */
continue;
@@ -615,7 +619,7 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
case BCSP_W4_CRC:
if (bitrev16(bcsp->message_crc) != bscp_get_crc(bcsp)) {
- BT_ERR ("Checksum failed: computed %04x received %04x",
+ BT_ERR("Checksum failed: computed %04x received %04x",
bitrev16(bcsp->message_crc),
bscp_get_crc(bcsp));
@@ -653,8 +657,9 @@ static int bcsp_recv(struct hci_uart *hu, const void *data, int count)
BCSP_CRC_INIT(bcsp->message_crc);
/* Do not increment ptr or decrement count
- * Allocate packet. Max len of a BCSP pkt=
- * 0xFFF (payload) +4 (header) +2 (crc) */
+ * Allocate packet. Max len of a BCSP pkt=
+ * 0xFFF (payload) +4 (header) +2 (crc)
+ */
bcsp->rx_skb = bt_skb_alloc(0x1005, GFP_ATOMIC);
if (!bcsp->rx_skb) {
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-23 02:50:26 +0000