[PATCH] smb: fix smbdirect link failure

[Arnd Bergmann <arnd@kernel.org>]

From: Arnd Bergmann <arnd@arndb.de>

When CONFIG_INFINIBAND is set to =m, it is not possible to have SMBDIRECT
built-in, and it turns into a loadable module, but this does not prevent
CIFS and SMB_SERVER from being built-in, which in turn causes this
link error:

ld.lld-22: error: undefined symbol: smbdirect_socket_release
>>> referenced by smbdirect.c:212 (fs/smb/client/smbdirect.c:212)
>>>               fs/smb/client/smbdirect.o:(smbd_destroy) in archive vmlinux.a
>>> referenced by smbdirect.c:212 (fs/smb/client/smbdirect.c:212)
>>>               fs/smb/client/smbdirect.o:(smbd_reconnect) in archive vmlinux.a
>>> referenced by smbdirect.c:338 (fs/smb/client/smbdirect.c:338)
>>>               fs/smb/client/smbdirect.o:(smbd_get_connection) in archive vmlinux.a

Enforce the dependency at Kconfig level, so that the respective smpdirect
options are only offered if it's possible to link against the common
module and infiniband.

Fixes: 28504d6ee127 ("smb: client: make use of smbdirect.ko")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 fs/smb/client/Kconfig | 1 +
 fs/smb/server/Kconfig | 1 +
 2 files changed, 2 insertions(+)

diff --git a/fs/smb/client/Kconfig b/fs/smb/client/Kconfig
index 72f47669da0c..981b3b5be09b 100644
--- a/fs/smb/client/Kconfig
+++ b/fs/smb/client/Kconfig
@@ -182,6 +182,7 @@ if CIFS
 config CIFS_SMB_DIRECT
 	bool "SMB Direct support"
 	depends on CIFS && INFINIBAND && INFINIBAND_ADDR_TRANS
+	depends on CIFS=m || INFINIBAND=y
 	select SMB_COMMON_SMBDIRECT
 	help
 	  Enables SMB Direct support for SMB 3.0, 3.02 and 3.1.1.
diff --git a/fs/smb/server/Kconfig b/fs/smb/server/Kconfig
index b084071d2442..5c77c5552ed8 100644
--- a/fs/smb/server/Kconfig
+++ b/fs/smb/server/Kconfig
@@ -49,6 +49,7 @@ if SMB_SERVER
 config SMB_SERVER_SMBDIRECT
 	bool "Support for SMB Direct protocol"
 	depends on SMB_SERVER && INFINIBAND && INFINIBAND_ADDR_TRANS
+	depends on SMB_SERVER=m || INFINIBAND=y
 	select SMB_COMMON_SMBDIRECT
 	default n
 
-- 
2.39.5