diff options
Diffstat (limited to 'drivers/net/can/at91_can.c')
| -rw-r--r-- | drivers/net/can/at91_can.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/can/at91_can.c b/drivers/net/can/at91_can.c index b2a4599eb1d7..3b66c6736832 100644 --- a/drivers/net/can/at91_can.c +++ b/drivers/net/can/at91_can.c @@ -243,6 +243,12 @@ static void at91_setup_mailboxes(struct net_device *dev) set_mb_mode(priv, i, AT91_MB_MODE_RX); set_mb_mode(priv, AT91_MB_RX_LAST, AT91_MB_MODE_RX_OVRWR); + /* reset acceptance mask and id register */ + for (i = AT91_MB_RX_FIRST; i <= AT91_MB_RX_LAST; i++) { + at91_write(priv, AT91_MAM(i), 0x0 ); + at91_write(priv, AT91_MID(i), AT91_MID_MIDE); + } + /* The last 4 mailboxes are used for transmitting. */ for (i = AT91_MB_TX_FIRST; i <= AT91_MB_TX_LAST; i++) set_mb_mode_prio(priv, i, AT91_MB_MODE_TX, 0); @@ -480,6 +486,9 @@ static void at91_read_mb(struct net_device *dev, unsigned int mb, *(u32 *)(cf->data + 0) = at91_read(priv, AT91_MDL(mb)); *(u32 *)(cf->data + 4) = at91_read(priv, AT91_MDH(mb)); + /* allow RX of extended frames */ + at91_write(priv, AT91_MID(mb), AT91_MID_MIDE); + if (unlikely(mb == AT91_MB_RX_LAST && reg_msr & AT91_MSR_MMI)) at91_rx_overflow_err(dev); } |