diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-09-16 10:39:28 (GMT) |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2014-09-18 09:15:09 (GMT) |
| commit | c32fe4ad3e4861b2bfa1f44114c564935a123dda (patch) | |
| tree | 1730d4e2f71daffee6805ba72195e325679f6bdb | |
| parent | 4be0015c955a9a6e26395dbaba4bfdedf8f755ca (diff) | |
| download | linux-c32fe4ad3e4861b2bfa1f44114c564935a123dda.tar.xz | |
can: flexcan: mark TX mailbox as TX_INACTIVE
This patch fixes the initialization of the TX mailbox. It is now correctly
initialized as TX_INACTIVE not RX_EMPTY.
Cc: linux-stable <stable@vger.kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/flexcan.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 630c7bf..76dcbca 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -136,6 +136,17 @@ /* 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) @@ -867,8 +878,8 @@ static int flexcan_chip_start(struct net_device *dev) netdev_dbg(dev, "%s: writing ctrl=0x%08x", __func__, reg_ctrl); flexcan_write(reg_ctrl, ®s->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, ®s->cantxfg[FLEXCAN_TX_BUF_ID].can_ctrl); /* acceptance mask/acceptance code (accept everything) */ |