can: flexcan: mark TX mailbox as TX_INACTIVE

commit c32fe4ad3e4861b2bfa1f44114c564935a123dda upstream.

This patch fixes the initialization of the TX mailbox. It is now correctly
initialized as TX_INACTIVE not RX_EMPTY.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 7c6bb5a..1b8e2d3 100644 (file)
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -131,6 +131,17 @@
 
 /* FLEXCAN message buffers */
 #define FLEXCAN_MB_CNT_CODE(x)         (((x) & 0xf) << 24)
+#define FLEXCAN_MB_CODE_RX_INACTIVE    (0x0 << 24)
+#define FLEXCAN_MB_CODE_RX_EMPTY       (0x4 << 24)
+#define FLEXCAN_MB_CODE_RX_FULL                (0x2 << 24)
+#define FLEXCAN_MB_CODE_RX_OVERRRUN    (0x6 << 24)
+#define FLEXCAN_MB_CODE_RX_RANSWER     (0xa << 24)
+
+#define FLEXCAN_MB_CODE_TX_INACTIVE    (0x8 << 24)
+#define FLEXCAN_MB_CODE_TX_ABORT       (0x9 << 24)
+#define FLEXCAN_MB_CODE_TX_DATA                (0xc << 24)
+#define FLEXCAN_MB_CODE_TX_TANSWER     (0xe << 24)
+
 #define FLEXCAN_MB_CNT_SRR             BIT(22)
 #define FLEXCAN_MB_CNT_IDE             BIT(21)
 #define FLEXCAN_MB_CNT_RTR             BIT(20)
@@ -733,8 +744,8 @@ static int flexcan_chip_start(struct net_device *dev)
        dev_dbg(dev->dev.parent, "%s: writing ctrl=0x%08x", __func__, reg_ctrl);
        flexcan_write(reg_ctrl, &regs->ctrl);
 
-       /* Abort any pending TX, mark Mailbox as INACTIVE */
-       flexcan_write(FLEXCAN_MB_CNT_CODE(0x4),
+       /* mark TX mailbox as INACTIVE */
+       flexcan_write(FLEXCAN_MB_CODE_TX_INACTIVE,
                      &regs->cantxfg[FLEXCAN_TX_BUF_ID].can_ctrl);
 
        /* acceptance mask/acceptance code (accept everything) */