Re: [PATCH V2 1/1] can: sja1000: f81601: add Fintek F81601 support

[Marc Kleine-Budde]

On 7/22/19 8:22 AM, Ji-Ze Hong (Peter Hong) wrote:
> This patch add support for Fintek PCIE to 2 CAN controller support
> 
> Signed-off-by: Ji-Ze Hong (Peter Hong) <hpeter+linux_kernel@xxxxxxxxx>
> ---
> Changelog:
> v2:
> 	1: Fix comment on the spinlock with write access.
> 	2: Use ARRAY_SIZE instead of F81601_PCI_MAX_CHAN.
> 	3: Check the strap pin outside the loop.
> 	4: Fix the cleanup issue in f81601_pci_add_card().
> 	5: Remove unused "channels" in struct f81601_pci_card.
> 
>  drivers/net/can/sja1000/Kconfig  |   8 ++
>  drivers/net/can/sja1000/Makefile |   1 +
>  drivers/net/can/sja1000/f81601.c | 215 +++++++++++++++++++++++++++++++++++++++
>  3 files changed, 224 insertions(+)
>  create mode 100644 drivers/net/can/sja1000/f81601.c

> diff --git a/drivers/net/can/sja1000/f81601.c b/drivers/net/can/sja1000/f81601.c
> new file mode 100644
> index 000000000000..3c378de8764d
> --- /dev/null
> +++ b/drivers/net/can/sja1000/f81601.c

[...]

> +static void f81601_pci_del_card(struct pci_dev *pdev)
> +{
> +	struct f81601_pci_card *card = pci_get_drvdata(pdev);
> +	struct net_device *dev;
> +	int i = 0;
> +
> +	for (i = 0; i < ARRAY_SIZE(card->net_dev); i++) {
> +		dev = card->net_dev[i];
> +		if (!dev)
> +			continue;
> +
> +		dev_info(&pdev->dev, "%s: Removing %s\n", __func__, dev->name);
> +
> +		unregister_sja1000dev(dev);
> +		free_sja1000dev(dev);
> +	}
> +
> +	pcim_iounmap(pdev, card->addr);

Why do you need iounmap()?

> +}

Marc

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