From: Marc Kleine-Budde <mkl@xxxxxxxxxxxxxx> 3.4.105-rc1 review patch. If anyone has any objections, please let me know. ------------------ 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@xxxxxxxxxxxxxx> Signed-off-by: Zefan Li <lizefan@xxxxxxxxxx> --- drivers/net/can/flexcan.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 75e9233..062bbe2 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -134,6 +134,17 @@ /* 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) @@ -734,8 +745,8 @@ 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) */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html