Commit 5597f082 authored by Marc Kleine-Budde's avatar Marc Kleine-Budde
Browse files

can: bittiming: mark function arguments and local variables as const 

This patch marks the arguments of some functions as well as some local
variables as constant.

Link: https://lore.kernel.org/all/20220124215642.3474154-7-mkl@pengutronix.de


Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 5b60d334

drivers/net/can/dev/bittiming.c

+6 −6
Original line number Original line Diff line number Diff line
@@ -24,7 +24,7 @@ 
 */

 */

static int

static int

can_update_sample_point(const struct can_bittiming_const *btc,

can_update_sample_point(const struct can_bittiming_const *btc,

			unsigned int sample_point_nominal, unsigned int tseg,

			const unsigned int sample_point_nominal, const unsigned int tseg,

			unsigned int *tseg1_ptr, unsigned int *tseg2_ptr,

			unsigned int *tseg1_ptr, unsigned int *tseg2_ptr,

			unsigned int *sample_point_error_ptr)

			unsigned int *sample_point_error_ptr)

{

{
@@ -63,7 +63,7 @@ can_update_sample_point(const struct can_bittiming_const *btc, 
	return best_sample_point;

	return best_sample_point;

}

}





int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,

int can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,

		       const struct can_bittiming_const *btc)

		       const struct can_bittiming_const *btc)

{

{

	struct can_priv *priv = netdev_priv(dev);

	struct can_priv *priv = netdev_priv(dev);
@@ -208,10 +208,10 @@ void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const, 
 * prescaler value brp. You can find more information in the header

 * prescaler value brp. You can find more information in the header

 * file linux/can/netlink.h.

 * file linux/can/netlink.h.

 */

 */

static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt,

static int can_fixup_bittiming(const struct net_device *dev, struct can_bittiming *bt,

			       const struct can_bittiming_const *btc)

			       const struct can_bittiming_const *btc)

{

{

	struct can_priv *priv = netdev_priv(dev);

	const struct can_priv *priv = netdev_priv(dev);

	unsigned int tseg1, alltseg;

	unsigned int tseg1, alltseg;

	u64 brp64;

	u64 brp64;
@@ -244,7 +244,7 @@ static int can_fixup_bittiming(struct net_device *dev, struct can_bittiming *bt, 




/* Checks the validity of predefined bitrate settings */

/* Checks the validity of predefined bitrate settings */

static int

static int

can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt,

can_validate_bitrate(const struct net_device *dev, const struct can_bittiming *bt,

		     const u32 *bitrate_const,

		     const u32 *bitrate_const,

		     const unsigned int bitrate_const_cnt)

		     const unsigned int bitrate_const_cnt)

{

{
@@ -258,7 +258,7 @@ can_validate_bitrate(struct net_device *dev, struct can_bittiming *bt, 
	return -EINVAL;

	return -EINVAL;

}

}





int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,

int can_get_bittiming(const struct net_device *dev, struct can_bittiming *bt,

		      const struct can_bittiming_const *btc,

		      const struct can_bittiming_const *btc,

		      const u32 *bitrate_const,

		      const u32 *bitrate_const,

		      const unsigned int bitrate_const_cnt)

		      const unsigned int bitrate_const_cnt)

include/linux/can/bittiming.h

+3 −3
Original line number Original line Diff line number Diff line
@@ -113,7 +113,7 @@ struct can_tdc_const { 
};

};





#ifdef CONFIG_CAN_CALC_BITTIMING

#ifdef CONFIG_CAN_CALC_BITTIMING

int can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,

int can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,

		       const struct can_bittiming_const *btc);

		       const struct can_bittiming_const *btc);





void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,

void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const,
@@ -121,7 +121,7 @@ void can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const, 
		   u32 *ctrlmode, u32 ctrlmode_supported);

		   u32 *ctrlmode, u32 ctrlmode_supported);

#else /* !CONFIG_CAN_CALC_BITTIMING */

#else /* !CONFIG_CAN_CALC_BITTIMING */

static inline int

static inline int

can_calc_bittiming(struct net_device *dev, struct can_bittiming *bt,

can_calc_bittiming(const struct net_device *dev, struct can_bittiming *bt,

		   const struct can_bittiming_const *btc)

		   const struct can_bittiming_const *btc)

{

{

	netdev_err(dev, "bit-timing calculation not available\n");

	netdev_err(dev, "bit-timing calculation not available\n");
@@ -136,7 +136,7 @@ can_calc_tdco(struct can_tdc *tdc, const struct can_tdc_const *tdc_const, 
}

}

#endif /* CONFIG_CAN_CALC_BITTIMING */

#endif /* CONFIG_CAN_CALC_BITTIMING */





int can_get_bittiming(struct net_device *dev, struct can_bittiming *bt,

int can_get_bittiming(const struct net_device *dev, struct can_bittiming *bt,

		      const struct can_bittiming_const *btc,

		      const struct can_bittiming_const *btc,

		      const u32 *bitrate_const,

		      const u32 *bitrate_const,

		      const unsigned int bitrate_const_cnt);

		      const unsigned int bitrate_const_cnt);