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can: m_can: m_can_init_ram(): make static

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Since commit eaacfeaca7 ("can: m_can: Call the RAM init directly from
m_can_chip_config") m_can_init_ram() is not used outside of m_can.c.

Mark as static and remove the EXPORT_SYMBOL_GPL().

Link: https://patch.msgid.link/20251008-m_can-cleanups-v1-1-1784a18eaa84@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde
2025-08-08 15:29:34 +02:00
parent 578dbbb952
commit c6dcc2b321
2 changed files with 21 additions and 23 deletions
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43
drivers/net/can/m_can/m_can.c
View File

@@ -1380,6 +1380,27 @@ static const struct can_bittiming_const m_can_data_bittiming_const_31X = {
.brp_inc = 1,
};
static int m_can_init_ram(struct m_can_classdev *cdev)
{
int end, i, start;
int err = 0;
/* initialize the entire Message RAM in use to avoid possible
* ECC/parity checksum errors when reading an uninitialized buffer
*/
start = cdev->mcfg[MRAM_SIDF].off;
end = cdev->mcfg[MRAM_TXB].off +
cdev->mcfg[MRAM_TXB].num * TXB_ELEMENT_SIZE;
for (i = start; i < end; i += 4) {
err = m_can_fifo_write_no_off(cdev, i, 0x0);
if (err)
break;
}
return err;
}
static int m_can_set_bittiming(struct net_device *dev)
{
struct m_can_classdev *cdev = netdev_priv(dev);
@@ -2374,28 +2395,6 @@ static void m_can_of_parse_mram(struct m_can_classdev *cdev,
cdev->mcfg[MRAM_TXB].off, cdev->mcfg[MRAM_TXB].num);
}
int m_can_init_ram(struct m_can_classdev *cdev)
{
int end, i, start;
int err = 0;
/* initialize the entire Message RAM in use to avoid possible
* ECC/parity checksum errors when reading an uninitialized buffer
*/
start = cdev->mcfg[MRAM_SIDF].off;
end = cdev->mcfg[MRAM_TXB].off +
cdev->mcfg[MRAM_TXB].num * TXB_ELEMENT_SIZE;
for (i = start; i < end; i += 4) {
err = m_can_fifo_write_no_off(cdev, i, 0x0);
if (err)
break;
}
return err;
}
EXPORT_SYMBOL_GPL(m_can_init_ram);
int m_can_class_get_clocks(struct m_can_classdev *cdev)
{
int ret = 0;

1
drivers/net/can/m_can/m_can.h
View File

@@ -139,7 +139,6 @@ void m_can_class_free_dev(struct net_device *net);
int m_can_class_register(struct m_can_classdev *cdev);
void m_can_class_unregister(struct m_can_classdev *cdev);
int m_can_class_get_clocks(struct m_can_classdev *cdev);
int m_can_init_ram(struct m_can_classdev *priv);
int m_can_check_mram_cfg(struct m_can_classdev *cdev, u32 mram_max_size);
int m_can_class_suspend(struct device *dev);