On Tue, 25 Jul 2017 17:29:14 +0300
Dan Carpenter <dan.carpen...@oracle.com> wrote:
> Hello stephen hemminger,
>
> The patch 7ca4593338e1: "netvsc: fix netvsc_set_channels" from Jul
> 24, 2017, leads to the following static checker warning:
>
> drivers/net/hyperv/netvsc_drv.c:761 netvsc_set_channels()
> error: 'nvdev' is not an ERR_PTR
>
> drivers/net/hyperv/netvsc_drv.c:761 netvsc_set_channels()
> warn: passing a valid pointer to 'PTR_ERR'
>
> drivers/net/hyperv/netvsc_drv.c
> 753 memset(&device_info, 0, sizeof(device_info));
> 754 device_info.num_chn = count;
> 755 device_info.ring_size = ring_size;
> 756
> 757 nvdev = rndis_filter_device_add(dev, &device_info);
> 758 if (!IS_ERR(nvdev)) {
> 759 netif_set_real_num_tx_queues(net, nvdev->num_chn);
> 760 netif_set_real_num_rx_queues(net, nvdev->num_chn);
> 761 ret = PTR_ERR(nvdev);
> ^^^^^^^^^^^^^^^^^^^
> 762 } else {
> 763 device_info.num_chn = orig;
> 764 rndis_filter_device_add(dev, &device_info);
>
> Should that be moved here? It's not immediately clear to me what's
> happening here.
>
> 765 }
> 766
> 767 if (was_opened)
> 768 rndis_filter_open(nvdev);
> 769
>
>
> regards,
> dan carpenter
Thanks, yes this does cause incorrect return value.
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