linux-kernel - Re: [PATCH -next v2] PCI: endpoint: pci-epf-vntb: fix error handle in epf_ntb_mw_bar

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Date:   Tue, 13 Dec 2022 12:27:30 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Yang Yingliang <yangyingliang@...wei.com>
Cc:     linux-kernel@...r.kernel.org, linux-pci@...r.kernel.org,
        Frank.Li@....com, jdmason@...zu.us, kishon@...com,
        lpieralisi@...nel.org, kw@...ux.com, bhelgaas@...gle.com
Subject: Re: [PATCH -next v2] PCI: endpoint: pci-epf-vntb: fix error handle
 in epf_ntb_mw_bar_init()

On Sat, Jun 25, 2022 at 10:15:16AM +0800, Yang Yingliang wrote:
> In error case of epf_ntb_mw_bar_init(), memory window BARs should be
> cleared, so add 'num_mws' parameter in epf_ntb_mw_bar_clear() and
> calling it in error path to clear the BARs. Also add missing error
> code when pci_epc_mem_alloc_addr() fails.
> ...

> @@ -640,12 +650,12 @@ static int epf_ntb_mw_bar_init(struct epf_ntb *ntb)
>   * @ntb: NTB device that facilitates communication between HOST and vHOST
>   *
>   */
> -static void epf_ntb_mw_bar_clear(struct epf_ntb *ntb)
> +static void epf_ntb_mw_bar_clear(struct epf_ntb *ntb, int num_mws)

This change added a kernel-doc warning:

  drivers/pci/endpoint/functions/pci-epf-vntb.c:658: warning: Function parameter or member 'num_mws' not described in 'epf_ntb_mw_bar_clear'

Can you fix this, please?

I use this to check for kernel-doc warnings:

  $ find drivers/pci -type f -name \*.[ch] | xargs scripts/kernel-doc -none