diff options
Diffstat (limited to 'drivers/net/can/flexcan.c')
| -rw-r--r-- | drivers/net/can/flexcan.c | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c index 7ba80e5c00d1..9f5110d8fd63 100644 --- a/drivers/net/can/flexcan.c +++ b/drivers/net/can/flexcan.c @@ -738,7 +738,6 @@ static int flexcan_chip_start(struct net_device *dev) { struct flexcan_priv *priv = netdev_priv(dev); struct flexcan_regs __iomem *regs = priv->base; - unsigned int i; int err; u32 reg_mcr, reg_ctrl, reg_crl2, reg_mecr; @@ -774,10 +773,12 @@ static int flexcan_chip_start(struct net_device *dev) * */ reg_mcr = readl(®s->mcr); + reg_mcr &= ~FLEXCAN_MCR_MAXMB(0xff); reg_mcr |= FLEXCAN_MCR_FRZ | FLEXCAN_MCR_FEN | FLEXCAN_MCR_HALT | FLEXCAN_MCR_SUPV | FLEXCAN_MCR_WRN_EN | FLEXCAN_MCR_IDAM_C | FLEXCAN_MCR_WAK_MSK | - FLEXCAN_MCR_SLF_WAK | FLEXCAN_MCR_SRX_DIS; + FLEXCAN_MCR_IDAM_C | FLEXCAN_MCR_SRX_DIS | + FLEXCAN_MCR_MAXMB(FLEXCAN_TX_BUF_ID); dev_dbg(dev->dev.parent, "%s: writing mcr=0x%08x", __func__, reg_mcr); writel(reg_mcr, ®s->mcr); @@ -807,15 +808,9 @@ static int flexcan_chip_start(struct net_device *dev) dev_dbg(dev->dev.parent, "%s: writing ctrl=0x%08x", __func__, reg_ctrl); writel(reg_ctrl, ®s->ctrl); - for (i = 0; i < ARRAY_SIZE(regs->cantxfg); i++) { - writel(0, ®s->cantxfg[i].can_ctrl); - writel(0, ®s->cantxfg[i].can_id); - writel(0, ®s->cantxfg[i].data[0]); - writel(0, ®s->cantxfg[i].data[1]); - - /* put MB into rx queue */ - writel(FLEXCAN_MB_CNT_CODE(0x4), ®s->cantxfg[i].can_ctrl); - } + /* Abort any pending TX, mark Mailbox as INACTIVE */ + writel(FLEXCAN_MB_CNT_CODE(0x4), + ®s->cantxfg[FLEXCAN_TX_BUF_ID].can_ctrl); /* acceptance mask/acceptance code (accept everything) */ writel(0x0, ®s->rxgmask); |