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Subject: Re: [PATCH] PCI: endpoint: Select configfs dependency
To:     Arnd Bergmann <arnd@kernel.org>,
        Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
        Bjorn Helgaas <bhelgaas@google.com>
CC:     Arnd Bergmann <arnd@arndb.de>, <linux-pci@vger.kernel.org>,
        <linux-kernel@vger.kernel.org>
References: <20210125113445.2341590-1-arnd@kernel.org>
From:   Kishon Vijay Abraham I <kishon@ti.com>
Message-ID: <98b28941-68b6-5bf9-7a23-874c6ecd0918@ti.com>
Date:   Fri, 29 Jan 2021 13:47:35 +0530
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Hi Arnd, Lorenzo,

On 25/01/21 5:04 pm, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> The newly added pci-epf-ntb driver uses configfs, which
> causes a link failure when that is disabled at compile-time:
> 
> arm-linux-gnueabi-ld: drivers/pci/endpoint/functions/pci-epf-ntb.o: in function `epf_ntb_add_cfs':
> pci-epf-ntb.c:(.text+0x954): undefined reference to `config_group_init_type_name'
> 
> Add a 'select' statement to Kconfig to ensure it's always there,
> which is the common way to enable it for other configfs users.
> 
> Fixes: 7dc64244f9e9 ("PCI: endpoint: Add EP function driver to provide NTB functionality")
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>

Since I'm sending a new revision of NTB driver, I'll squash this patch
with the driver patch and add Arnd's sign off.

Thank You,
Kishon

> ---
>  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 24bfb2af65a1..5d35fcd613ef 100644
> --- a/drivers/pci/endpoint/functions/Kconfig
> +++ b/drivers/pci/endpoint/functions/Kconfig
> @@ -16,6 +16,7 @@ config PCI_EPF_TEST
>  config PCI_EPF_NTB
>  	tristate "PCI Endpoint NTB driver"
>  	depends on PCI_ENDPOINT
> +	select CONFIGFS_FS
>  	help
>  	  Select this configuration option to enable the NTB driver
>  	  for PCI Endpoint. NTB driver implements NTB controller
>