diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2012-10-04 22:57:00 +0200 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-10-04 22:57:51 +0200 |
| commit | c37d6154c0b9163c27e53cc1d0be3867b4abd760 (patch) | |
| tree | 7a24522c56d1cb284dff1d3c225bbdaba0901bb5 /drivers/net/can/sja1000/sja1000.c | |
| parent | e7a570ff7dff9af6e54ff5e580a61ec7652137a0 (diff) | |
| parent | 8a1ab3155c2ac7fbe5f2038d6e26efeb607a1498 (diff) | |
Merge branch 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers into asm-generic
Patches from David Howells <dhowells@redhat.com>:
This is to complete part of the UAPI disintegration for which the
preparatory patches were pulled recently.
Note that there are some fixup patches which are at the base of the
branch aimed at you, plus all arches get the asm-generic branch merged in too.
* 'disintegrate-asm-generic' of git://git.infradead.org/users/dhowells/linux-headers:
UAPI: (Scripted) Disintegrate include/asm-generic
UAPI: Fix conditional header installation handling (notably kvm_para.h on m68k)
c6x: remove c6x signal.h
UAPI: Split compound conditionals containing __KERNEL__ in Arm64
UAPI: Fix the guards on various asm/unistd.h files
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'drivers/net/can/sja1000/sja1000.c')
| -rw-r--r-- | drivers/net/can/sja1000/sja1000.c | 31 |
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c index 4c4f33d482d..25011dbe1b9 100644 --- a/drivers/net/can/sja1000/sja1000.c +++ b/drivers/net/can/sja1000/sja1000.c @@ -156,8 +156,13 @@ static void set_normal_mode(struct net_device *dev) } /* set chip to normal mode */ - priv->write_reg(priv, REG_MOD, 0x00); + if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) + priv->write_reg(priv, REG_MOD, MOD_LOM); + else + priv->write_reg(priv, REG_MOD, 0x00); + udelay(10); + status = priv->read_reg(priv, REG_MOD); } @@ -310,7 +315,10 @@ static netdev_tx_t sja1000_start_xmit(struct sk_buff *skb, can_put_echo_skb(skb, dev, 0); - sja1000_write_cmdreg(priv, CMD_TR); + if (priv->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT) + sja1000_write_cmdreg(priv, CMD_TR | CMD_AT); + else + sja1000_write_cmdreg(priv, CMD_TR); return NETDEV_TX_OK; } @@ -505,10 +513,18 @@ irqreturn_t sja1000_interrupt(int irq, void *dev_id) netdev_warn(dev, "wakeup interrupt\n"); if (isrc & IRQ_TI) { - /* transmission complete interrupt */ - stats->tx_bytes += priv->read_reg(priv, REG_FI) & 0xf; - stats->tx_packets++; - can_get_echo_skb(dev, 0); + /* transmission buffer released */ + if (priv->can.ctrlmode & CAN_CTRLMODE_ONE_SHOT && + !(status & SR_TCS)) { + stats->tx_errors++; + can_free_echo_skb(dev, 0); + } else { + /* transmission complete */ + stats->tx_bytes += + priv->read_reg(priv, REG_FI) & 0xf; + stats->tx_packets++; + can_get_echo_skb(dev, 0); + } netif_wake_queue(dev); } if (isrc & IRQ_RI) { @@ -605,7 +621,8 @@ struct net_device *alloc_sja1000dev(int sizeof_priv) priv->can.do_set_mode = sja1000_set_mode; priv->can.do_get_berr_counter = sja1000_get_berr_counter; priv->can.ctrlmode_supported = CAN_CTRLMODE_3_SAMPLES | - CAN_CTRLMODE_BERR_REPORTING; + CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_LISTENONLY | + CAN_CTRLMODE_ONE_SHOT; spin_lock_init(&priv->cmdreg_lock); |