linux-kernel - [PATCH] PCI: endpoint: Select configfs dependency

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Date:   Mon, 25 Jan 2021 12:34:39 +0100
From:   Arnd Bergmann <arnd@...nel.org>
To:     Kishon Vijay Abraham I <kishon@...com>,
        Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Cc:     Arnd Bergmann <arnd@...db.de>, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] PCI: endpoint: Select configfs dependency

From: Arnd Bergmann <arnd@...db.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@...db.de>
---
 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
-- 
2.29.2