diff options
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/m_can/m_can_platform.c | 14 | ||||
| -rw-r--r-- | drivers/net/can/rcar/rcar_can.c | 20 | ||||
| -rw-r--r-- | drivers/net/can/sja1000/peak_pci.c | 9 | ||||
| -rw-r--r-- | drivers/net/can/usb/peak_usb/pcan_usb_fd.c | 8 |
4 files changed, 31 insertions, 20 deletions
diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c index 308d4f2fff00..eee47bad0592 100644 --- a/drivers/net/can/m_can/m_can_platform.c +++ b/drivers/net/can/m_can/m_can_platform.c @@ -32,8 +32,13 @@ static u32 iomap_read_reg(struct m_can_classdev *cdev, int reg) static int iomap_read_fifo(struct m_can_classdev *cdev, int offset, void *val, size_t val_count) { struct m_can_plat_priv *priv = cdev_to_priv(cdev); + void __iomem *src = priv->mram_base + offset; - ioread32_rep(priv->mram_base + offset, val, val_count); + while (val_count--) { + *(unsigned int *)val = ioread32(src); + val += 4; + src += 4; + } return 0; } @@ -51,8 +56,13 @@ static int iomap_write_fifo(struct m_can_classdev *cdev, int offset, const void *val, size_t val_count) { struct m_can_plat_priv *priv = cdev_to_priv(cdev); + void __iomem *dst = priv->mram_base + offset; - iowrite32_rep(priv->base + offset, val, val_count); + while (val_count--) { + iowrite32(*(unsigned int *)val, dst); + val += 4; + dst += 4; + } return 0; } diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c index 00e4533c8bdd..8999ec9455ec 100644 --- a/drivers/net/can/rcar/rcar_can.c +++ b/drivers/net/can/rcar/rcar_can.c @@ -846,10 +846,12 @@ static int __maybe_unused rcar_can_suspend(struct device *dev) struct rcar_can_priv *priv = netdev_priv(ndev); u16 ctlr; - if (netif_running(ndev)) { - netif_stop_queue(ndev); - netif_device_detach(ndev); - } + if (!netif_running(ndev)) + return 0; + + netif_stop_queue(ndev); + netif_device_detach(ndev); + ctlr = readw(&priv->regs->ctlr); ctlr |= RCAR_CAN_CTLR_CANM_HALT; writew(ctlr, &priv->regs->ctlr); @@ -868,6 +870,9 @@ static int __maybe_unused rcar_can_resume(struct device *dev) u16 ctlr; int err; + if (!netif_running(ndev)) + return 0; + err = clk_enable(priv->clk); if (err) { netdev_err(ndev, "clk_enable() failed, error %d\n", err); @@ -881,10 +886,9 @@ static int __maybe_unused rcar_can_resume(struct device *dev) writew(ctlr, &priv->regs->ctlr); priv->can.state = CAN_STATE_ERROR_ACTIVE; - if (netif_running(ndev)) { - netif_device_attach(ndev); - netif_start_queue(ndev); - } + netif_device_attach(ndev); + netif_start_queue(ndev); + return 0; } diff --git a/drivers/net/can/sja1000/peak_pci.c b/drivers/net/can/sja1000/peak_pci.c index 6db90dc4bc9d..84f34020aafb 100644 --- a/drivers/net/can/sja1000/peak_pci.c +++ b/drivers/net/can/sja1000/peak_pci.c @@ -752,16 +752,15 @@ static void peak_pci_remove(struct pci_dev *pdev) struct net_device *prev_dev = chan->prev_dev; dev_info(&pdev->dev, "removing device %s\n", dev->name); + /* do that only for first channel */ + if (!prev_dev && chan->pciec_card) + peak_pciec_remove(chan->pciec_card); unregister_sja1000dev(dev); free_sja1000dev(dev); dev = prev_dev; - if (!dev) { - /* do that only for first channel */ - if (chan->pciec_card) - peak_pciec_remove(chan->pciec_card); + if (!dev) break; - } priv = netdev_priv(dev); chan = priv->priv; } diff --git a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c index b11eabad575b..09029a3bad1a 100644 --- a/drivers/net/can/usb/peak_usb/pcan_usb_fd.c +++ b/drivers/net/can/usb/peak_usb/pcan_usb_fd.c @@ -551,11 +551,10 @@ static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, } else if (sm->channel_p_w_b & PUCAN_BUS_WARNING) { new_state = CAN_STATE_ERROR_WARNING; } else { - /* no error bit (so, no error skb, back to active state) */ - dev->can.state = CAN_STATE_ERROR_ACTIVE; + /* back to (or still in) ERROR_ACTIVE state */ + new_state = CAN_STATE_ERROR_ACTIVE; pdev->bec.txerr = 0; pdev->bec.rxerr = 0; - return 0; } /* state hasn't changed */ @@ -568,8 +567,7 @@ static int pcan_usb_fd_decode_status(struct pcan_usb_fd_if *usb_if, /* allocate an skb to store the error frame */ skb = alloc_can_err_skb(netdev, &cf); - if (skb) - can_change_state(netdev, cf, tx_state, rx_state); + can_change_state(netdev, cf, tx_state, rx_state); /* things must be done even in case of OOM */ if (new_state == CAN_STATE_BUS_OFF) |