linux-kernel - Re: [PATCH v9 11/22] IB/hns: Add IB device registration

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Date:	Thu, 9 Jun 2016 09:26:31 +0300
From:	Leon Romanovsky <leon@...nel.org>
To:	Lijun Ou <oulijun@...wei.com>
Cc:	dledford@...hat.com, sean.hefty@...el.com,
	hal.rosenstock@...il.com, davem@...emloft.net,
	jeffrey.t.kirsher@...el.com, jiri@...lanox.com,
	ogerlitz@...lanox.com, linux-rdma@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	gongyangming@...wei.com, xiaokun@...wei.com,
	tangchaofei@...wei.com, haifeng.wei@...wei.com,
	yisen.zhuang@...wei.com, yankejian@...wei.com,
	charles.chenxin@...wei.com, linuxarm@...wei.com
Subject: Re: [PATCH v9 11/22] IB/hns: Add IB device registration

On Wed, Jun 01, 2016 at 11:37:53PM +0800, Lijun Ou wrote:
> This patch registered IB device when loaded, and unregistered
> IB device when removed.
> 
> Signed-off-by: Wei Hu <xavier.huwei@...wei.com>
> Signed-off-by: Nenglong Zhao <zhaonenglong@...ilicon.com>
> Signed-off-by: Lijun Ou <oulijun@...wei.com>
> ---
>  drivers/infiniband/hw/hns/hns_roce_main.c | 46 +++++++++++++++++++++++++++++++
>  1 file changed, 46 insertions(+)
> 
> diff --git a/drivers/infiniband/hw/hns/hns_roce_main.c b/drivers/infiniband/hw/hns/hns_roce_main.c
> index 7fb0d34..f179a7f 100644
> --- a/drivers/infiniband/hw/hns/hns_roce_main.c
> +++ b/drivers/infiniband/hw/hns/hns_roce_main.c
> @@ -62,6 +62,41 @@
>  #include "hns_roce_device.h"
>  #include "hns_roce_icm.h"
>  
> +void hns_roce_unregister_device(struct hns_roce_dev *hr_dev)

You are not calling to this function in this patch.

> +{
> +	ib_unregister_device(&hr_dev->ib_dev);
> +}
> +
> +int hns_roce_register_device(struct hns_roce_dev *hr_dev)

This function should be static.

> +{
> +	int ret;
> +	struct hns_roce_ib_iboe *iboe = NULL;
> +	struct ib_device *ib_dev = NULL;
> +	struct device *dev = &hr_dev->pdev->dev;
> +
> +	iboe = &hr_dev->iboe;
> +
> +	ib_dev = &hr_dev->ib_dev;
> +	strlcpy(ib_dev->name, "hisi_%d", IB_DEVICE_NAME_MAX);
> +
> +	ib_dev->owner			= THIS_MODULE;
> +	ib_dev->node_type		= RDMA_NODE_IB_CA;
> +	ib_dev->dma_device		= dev;
> +
> +	ib_dev->phys_port_cnt		= hr_dev->caps.num_ports;
> +	ib_dev->local_dma_lkey		= hr_dev->caps.reserved_lkey;
> +	ib_dev->num_comp_vectors	= hr_dev->caps.num_comp_vectors;
> +	ib_dev->uverbs_abi_ver		= 1;
> +
> +	ret = ib_register_device(ib_dev, NULL);
> +	if (ret) {
> +		dev_err(dev, "ib_register_device failed!\n");
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
>  int hns_roce_get_cfg(struct hns_roce_dev *hr_dev)
>  {
>  	int i;
> @@ -363,6 +398,17 @@ static int hns_roce_probe(struct platform_device *pdev)
>  		goto error_failed_engine_init;
>  	}
>  
> +	ret = hns_roce_register_device(hr_dev);
> +	if (ret) {
> +		dev_err(dev, "register_device failed!\n");

According to the current code, you will print this error together with
error line in hns_roce_register_device for the same failure.

"ib_register_device failed!"
"register_device failed!"

> +		goto error_failed_register_device;
> +	}
> +
> +	return 0;
> +
> +error_failed_register_device:
> +	hns_roce_engine_exit(hr_dev);
> +
>  error_failed_engine_init:
>  	hns_roce_cleanup_bitmap(hr_dev);
>  
> -- 
> 1.9.1
> 
> --
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