can: m_can: m_can_init_ram(): make static

Since commit eaacfeaca7ad ("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>

2 files changed, 21 insertions, 23 deletions

diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 8569596ae830..9f4002f3481e 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -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;
diff --git a/drivers/net/can/m_can/m_can.h b/drivers/net/can/m_can/m_can.h
index f2f89687bbd2..4743342b2fba 100644
--- a/drivers/net/can/m_can/m_can.h
+++ b/drivers/net/can/m_can/m_can.h
@@ -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);