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OpenCloudOS-Kernel
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can: dev: avoid long lines 

This patch fixes long lines in the generic CAN device infrastructure.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2019-08-27 13:53:18 +02:00
parent ee9a5f5e55
commit d7bda73070
3 changed files with 38 additions and 21 deletions
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43
drivers/net/can/dev.c
View File

@ -73,10 +73,11 @@ EXPORT_SYMBOL_GPL(can_len2dlc);
* registers of the CAN controller. You can find more information
* in the header file linux/can/netlink.h.
*/
static int can_update_sample_point(const struct can_bittiming_const *btc,
unsigned int sample_point_nominal, unsigned int tseg,
unsigned int *tseg1_ptr, unsigned int *tseg2_ptr,
unsigned int *sample_point_error_ptr)
static int
can_update_sample_point(const struct can_bittiming_const *btc,
unsigned int sample_point_nominal, unsigned int tseg,
unsigned int *tseg1_ptr, unsigned int *tseg2_ptr,
unsigned int *sample_point_error_ptr)
{
unsigned int sample_point_error, best_sample_point_error = UINT_MAX;
unsigned int sample_point, best_sample_point = 0;
@ -84,7 +85,9 @@ static int can_update_sample_point(const struct can_bittiming_const *btc,
int i;
for (i = 0; i <= 1; i++) {
tseg2 = tseg + CAN_CALC_SYNC_SEG - (sample_point_nominal * (tseg + CAN_CALC_SYNC_SEG)) / 1000 - i;
tseg2 = tseg + CAN_CALC_SYNC_SEG -
(sample_point_nominal * (tseg + CAN_CALC_SYNC_SEG)) /
1000 - i;
tseg2 = clamp(tseg2, btc->tseg2_min, btc->tseg2_max);
tseg1 = tseg - tseg2;
if (tseg1 > btc->tseg1_max) {
@ -92,10 +95,12 @@ static int can_update_sample_point(const struct can_bittiming_const *btc,
tseg2 = tseg - tseg1;
}
sample_point = 1000 * (tseg + CAN_CALC_SYNC_SEG - tseg2) / (tseg + CAN_CALC_SYNC_SEG);
sample_point = 1000 * (tseg + CAN_CALC_SYNC_SEG - tseg2) /
(tseg + CAN_CALC_SYNC_SEG);
sample_point_error = abs(sample_point_nominal - sample_point);
if ((sample_point <= sample_point_nominal) && (sample_point_error < best_sample_point_error)) {
if ((sample_point <= sample_point_nominal) &&
(sample_point_error < best_sample_point_error)) {
best_sample_point = sample_point;
best_sample_point_error = sample_point_error;
*tseg1_ptr = tseg1;
@ -160,7 +165,8 @@ static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
if (bitrate_error < best_bitrate_error)
best_sample_point_error = UINT_MAX;
can_update_sample_point(btc, sample_point_nominal, tseg / 2, &tseg1, &tseg2, &sample_point_error);
can_update_sample_point(btc, sample_point_nominal, tseg / 2,
&tseg1, &tseg2, &sample_point_error);
if (sample_point_error > best_sample_point_error)
continue;
@ -189,8 +195,9 @@ static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
}
/* real sample point */
bt->sample_point = can_update_sample_point(btc, sample_point_nominal, best_tseg,
&tseg1, &tseg2, NULL);
bt->sample_point = can_update_sample_point(btc, sample_point_nominal,
best_tseg, &tseg1, &tseg2,
NULL);
v64 = (u64)best_brp * 1000 * 1000 * 1000;
do_div(v64, priv->clock.freq);
@ -214,7 +221,8 @@ static int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,
bt->brp = best_brp;
/* real bitrate */
bt->bitrate = priv->clock.freq / (bt->brp * (CAN_CALC_SYNC_SEG + tseg1 + tseg2));
bt->bitrate = priv->clock.freq /
(bt->brp * (CAN_CALC_SYNC_SEG + tseg1 + tseg2));
return 0;
}
@ -267,9 +275,10 @@ static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt,
}
/* Checks the validity of predefined bitrate settings */
static int can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,
const u32 *bitrate_const,
const unsigned int bitrate_const_cnt)
static int
can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,
const u32 *bitrate_const,
const unsigned int bitrate_const_cnt)
{
struct can_priv *priv = netdev_priv(dev);
unsigned int i;
@ -460,7 +469,8 @@ void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
}
EXPORT_SYMBOL_GPL(can_put_echo_skb);
struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr)
struct sk_buff *
__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr)
{
struct can_priv *priv = netdev_priv(dev);
@ -569,7 +579,8 @@ restart:
static void can_restart_work(struct work_struct *work)
{
struct delayed_work *dwork = to_delayed_work(work);
struct can_priv *priv = container_of(dwork, struct can_priv, restart_work);
struct can_priv *priv = container_of(dwork, struct can_priv,
restart_work);
can_restart(priv->dev);
}

3
include/linux/can/dev.h
View File

@ -169,7 +169,8 @@ void can_change_state(struct net_device *dev, struct can_frame *cf,
void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev,
unsigned int idx);
struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx, u8 *len_ptr);
struct sk_buff *__can_get_echo_skb(struct net_device *dev, unsigned int idx,
u8 *len_ptr);
unsigned int can_get_echo_skb(struct net_device *dev, unsigned int idx);
void can_free_echo_skb(struct net_device *dev, unsigned int idx);

13
include/linux/can/rx-offload.h
View File

@ -15,7 +15,8 @@
struct can_rx_offload {
struct net_device *dev;
unsigned int (*mailbox_read)(struct can_rx_offload *offload, struct can_frame *cf,
unsigned int (*mailbox_read)(struct can_rx_offload *offload,
struct can_frame *cf,
u32 *timestamp, unsigned int mb);
struct sk_buff_head skb_queue;
@ -29,9 +30,13 @@ struct can_rx_offload {
bool inc;
};
int can_rx_offload_add_timestamp(struct net_device *dev, struct can_rx_offload *offload);
int can_rx_offload_add_fifo(struct net_device *dev, struct can_rx_offload *offload, unsigned int weight);
int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload, u64 reg);
int can_rx_offload_add_timestamp(struct net_device *dev,
struct can_rx_offload *offload);
int can_rx_offload_add_fifo(struct net_device *dev,
struct can_rx_offload *offload,
unsigned int weight);
int can_rx_offload_irq_offload_timestamp(struct can_rx_offload *offload,
u64 reg);
int can_rx_offload_irq_offload_fifo(struct can_rx_offload *offload);
int can_rx_offload_queue_sorted(struct can_rx_offload *offload,
struct sk_buff *skb, u32 timestamp);