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Message-ID: <20220627195712.GA1772707@bhelgaas>
Date:   Mon, 27 Jun 2022 14:57:12 -0500
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Ren Zhijie <renzhijie2@...wei.com>
Cc:     kishon@...com, lpieralisi@...nel.org, kw@...ux.com,
        bhelgaas@...gle.com, jdmason@...zu.us, Frank.Li@....com,
        linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] PCI: endpoint: Fix Kconfig dependency

On Fri, Jun 24, 2022 at 09:19:11AM +0800, Ren Zhijie wrote:
> If CONFIG_NTB is not set and CONFIG_PCI_EPF_VNTB is y.
> 
> make ARCH=x86_64 CROSS_COMPILE=x86_64-linux-gnu-, will be failed, like this:
> 
> drivers/pci/endpoint/functions/pci-epf-vntb.o: In function `epf_ntb_cmd_handler':
> pci-epf-vntb.c:(.text+0x95e): undefined reference to `ntb_db_event'
> pci-epf-vntb.c:(.text+0xa1f): undefined reference to `ntb_link_event'
> pci-epf-vntb.c:(.text+0xa42): undefined reference to `ntb_link_event'
> drivers/pci/endpoint/functions/pci-epf-vntb.o: In function `pci_vntb_probe':
> pci-epf-vntb.c:(.text+0x1250): undefined reference to `ntb_register_device'
> 
> The functions ntb_*() are defined in drivers/ntb/core.c, which need CONFIG_NTB setting y to be build-in.
> To fix this build error, add depends on NTB.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: ff32fac00d97("NTB: EPF: support NTB transfer between PCI RC and EP connection")
> Signed-off-by: Ren Zhijie <renzhijie2@...wei.com>
> Acked-by: Frank Li <frank.li@....com>

Am I missing something? 

  02:54:01 ~/linux (next)$ git checkout -b wip/ren-endpoint-ntb v5.19-rc1
  Switched to a new branch 'wip/ren-endpoint-ntb'
  02:54:23 ~/linux (wip/ren-endpoint-ntb)$ b4 am -om/ https://lore.kernel.org/r/20220624011911.164146-1-renzhijie2@huawei.com
  Looking up https://lore.kernel.org/r/20220624011911.164146-1-renzhijie2%40huawei.com
  Analyzing 1 messages in the thread
  Checking attestation on all messages, may take a moment...
  ---
    [PATCH] PCI: endpoint: Fix Kconfig dependency
  ---
  Total patches: 1
  ---
   Link: https://lore.kernel.org/r/20220624011911.164146-1-renzhijie2@huawei.com
   Base: not specified
	 git am m/20220624_renzhijie2_pci_endpoint_fix_kconfig_dependency.mbx
  02:54:47 ~/linux (wip/ren-endpoint-ntb)$ git am m/20220624_renzhijie2_pci_endpoint_fix_kconfig_dependency.mbx
  Applying: PCI: endpoint: Fix Kconfig dependency
  error: patch failed: drivers/pci/endpoint/functions/Kconfig:29
  error: drivers/pci/endpoint/functions/Kconfig: patch does not apply
  Patch failed at 0001 PCI: endpoint: Fix Kconfig dependency
  hint: Use 'git am --show-current-patch' to see the failed patch
  When you have resolved this problem, run "git am --continue".
  If you prefer to skip this patch, run "git am --skip" instead.
  To restore the original branch and stop patching, run "git am --abort".

Obviously I could fix this manually, but if there's something wrong
with your patch posting process, we should fix it.

> ---
> v2: Fix some commit message errors
> ---
>  drivers/pci/endpoint/functions/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/pci/endpoint/functions/Kconfig b/drivers/pci/endpoint/functions/Kconfig
> index 362555b024e8..9beee4f0f4ee 100644
> --- a/drivers/pci/endpoint/functions/Kconfig
> +++ b/drivers/pci/endpoint/functions/Kconfig
> @@ -29,6 +29,7 @@ config PCI_EPF_NTB
>  config PCI_EPF_VNTB
>          tristate "PCI Endpoint NTB driver"
>          depends on PCI_ENDPOINT
> +        depends on NTB
>          select CONFIGFS_FS
>          help
>            Select this configuration option to enable the Non-Transparent
> -- 
> 2.17.1
> 

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