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From:   Arnd Bergmann <arnd@arndb.de>
To:     Doug Ledford <dledford@redhat.com>, Jason Gunthorpe <jgg@ziepe.ca>
Cc:     Arnd Bergmann <arnd@arndb.de>, Keith Busch <keith.busch@intel.com>,
        Jens Axboe <axboe@fb.com>, Christoph Hellwig <hch@lst.de>,
        Sagi Grimberg <sagi@grimberg.me>,
        Oleg Drokin <oleg.drokin@intel.com>,
        Andreas Dilger <andreas.dilger@intel.com>,
        James Simmons <jsimmons@infradead.org>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Steve French <sfrench@samba.org>,
        Eric Van Hensbergen <ericvh@gmail.com>,
        Ron Minnich <rminnich@sandia.gov>,
        Latchesar Ionkov <lucho@ionkov.net>,
        "David S. Miller" <davem@davemloft.net>,
        Santosh Shilimkar <santosh.shilimkar@oracle.com>,
        Trond Myklebust <trond.myklebust@hammerspace.com>,
        Anna Schumaker <anna.schumaker@netapp.com>,
        "J. Bruce Fields" <bfields@fieldses.org>,
        Jeff Layton <jlayton@kernel.org>,
        Greg Thelen <gthelen@google.com>,
        Bart Van Assche <bart.vanassche@wdc.com>,
        linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-nvme@lists.infradead.org, lustre-devel@lists.lustre.org,
        devel@driverdev.osuosl.org, linux-cifs@vger.kernel.org,
        samba-technical@lists.samba.org,
        v9fs-developer@lists.sourceforge.net, netdev@vger.kernel.org,
        rds-devel@oss.oracle.com, linux-nfs@vger.kernel.org
Subject: [PATCH] IB: Revert "remove redundant INFINIBAND kconfig dependencies"
Date:   Fri, 25 May 2018 23:29:59 +0200
Message-Id: <20180525213123.2113748-1-arnd@arndb.de>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Several subsystems depend on INFINIBAND_ADDR_TRANS, which in turn depends
on INFINIBAND. However, when with CONFIG_INIFIBAND=m, this leads to a
link error when another driver using it is built-in. The
INFINIBAND_ADDR_TRANS dependency is insufficient here as this is
a 'bool' symbol that does not force anything to be a module in turn.

fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work':
smbdirect.c:(.text+0x1e4): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_request':
trans_rdma.c:(.text+0x7bc): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_destroy_trans':
trans_rdma.c:(.text+0x830): undefined reference to `ib_destroy_qp'
trans_rdma.c:(.text+0x858): undefined reference to `ib_dealloc_pd'

Fixes: 9533b292a7ac ("IB: remove redundant INFINIBAND kconfig dependencies")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
The patch that introduced the problem has been queued in the
rdma-fixes/for-rc tree. Please revert the patch before sending
the branch to Linus.
---
 drivers/infiniband/ulp/srpt/Kconfig | 2 +-
 drivers/nvme/host/Kconfig           | 2 +-
 drivers/nvme/target/Kconfig         | 2 +-
 drivers/staging/lustre/lnet/Kconfig | 2 +-
 fs/cifs/Kconfig                     | 2 +-
 net/9p/Kconfig                      | 2 +-
 net/rds/Kconfig                     | 2 +-
 net/sunrpc/Kconfig                  | 2 +-
 8 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/infiniband/ulp/srpt/Kconfig b/drivers/infiniband/ulp/srpt/Kconfig
index 25bf6955b6d0..fb8b7182f05e 100644
--- a/drivers/infiniband/ulp/srpt/Kconfig
+++ b/drivers/infiniband/ulp/srpt/Kconfig
@@ -1,6 +1,6 @@
 config INFINIBAND_SRPT
 	tristate "InfiniBand SCSI RDMA Protocol target support"
-	depends on INFINIBAND_ADDR_TRANS && TARGET_CORE
+	depends on INFINIBAND && INFINIBAND_ADDR_TRANS && TARGET_CORE
 	---help---
 
 	  Support for the SCSI RDMA Protocol (SRP) Target driver. The
diff --git a/drivers/nvme/host/Kconfig b/drivers/nvme/host/Kconfig
index dbb7464c018c..88a8b5916624 100644
--- a/drivers/nvme/host/Kconfig
+++ b/drivers/nvme/host/Kconfig
@@ -27,7 +27,7 @@ config NVME_FABRICS
 
 config NVME_RDMA
 	tristate "NVM Express over Fabrics RDMA host driver"
-	depends on INFINIBAND_ADDR_TRANS && BLOCK
+	depends on INFINIBAND && INFINIBAND_ADDR_TRANS && BLOCK
 	select NVME_CORE
 	select NVME_FABRICS
 	select SG_POOL
diff --git a/drivers/nvme/target/Kconfig b/drivers/nvme/target/Kconfig
index 7595664ee753..3c7b61ddb0d1 100644
--- a/drivers/nvme/target/Kconfig
+++ b/drivers/nvme/target/Kconfig
@@ -27,7 +27,7 @@ config NVME_TARGET_LOOP
 
 config NVME_TARGET_RDMA
 	tristate "NVMe over Fabrics RDMA target support"
-	depends on INFINIBAND_ADDR_TRANS
+	depends on INFINIBAND && INFINIBAND_ADDR_TRANS
 	depends on NVME_TARGET
 	select SGL_ALLOC
 	help
diff --git a/drivers/staging/lustre/lnet/Kconfig b/drivers/staging/lustre/lnet/Kconfig
index f3b1ad4bd3dc..ad049e6f24e4 100644
--- a/drivers/staging/lustre/lnet/Kconfig
+++ b/drivers/staging/lustre/lnet/Kconfig
@@ -34,7 +34,7 @@ config LNET_SELFTEST
 
 config LNET_XPRT_IB
 	tristate "LNET infiniband support"
-	depends on LNET && PCI && INFINIBAND_ADDR_TRANS
+	depends on LNET && PCI && INFINIBAND && INFINIBAND_ADDR_TRANS
 	default LNET && INFINIBAND
 	help
 	  This option allows the LNET users to use infiniband as an
diff --git a/fs/cifs/Kconfig b/fs/cifs/Kconfig
index d61e2de8d0eb..5f132d59dfc2 100644
--- a/fs/cifs/Kconfig
+++ b/fs/cifs/Kconfig
@@ -197,7 +197,7 @@ config CIFS_SMB311
 
 config CIFS_SMB_DIRECT
 	bool "SMB Direct support (Experimental)"
-	depends on CIFS=m && INFINIBAND_ADDR_TRANS || CIFS=y && INFINIBAND_ADDR_TRANS=y
+	depends on CIFS=m && INFINIBAND && INFINIBAND_ADDR_TRANS || CIFS=y && INFINIBAND=y && INFINIBAND_ADDR_TRANS=y
 	help
 	  Enables SMB Direct experimental support for SMB 3.0, 3.02 and 3.1.1.
 	  SMB Direct allows transferring SMB packets over RDMA. If unsure,
diff --git a/net/9p/Kconfig b/net/9p/Kconfig
index 46c39f7da444..e6014e0e51f7 100644
--- a/net/9p/Kconfig
+++ b/net/9p/Kconfig
@@ -32,7 +32,7 @@ config NET_9P_XEN
 
 
 config NET_9P_RDMA
-	depends on INET && INFINIBAND_ADDR_TRANS
+	depends on INET && INFINIBAND && INFINIBAND_ADDR_TRANS
 	tristate "9P RDMA Transport (Experimental)"
 	help
 	  This builds support for an RDMA transport.
diff --git a/net/rds/Kconfig b/net/rds/Kconfig
index 1a31502ee7db..bffde4b46c5d 100644
--- a/net/rds/Kconfig
+++ b/net/rds/Kconfig
@@ -8,7 +8,7 @@ config RDS
 
 config RDS_RDMA
 	tristate "RDS over Infiniband"
-	depends on RDS && INFINIBAND_ADDR_TRANS
+	depends on RDS && INFINIBAND && INFINIBAND_ADDR_TRANS
 	---help---
 	  Allow RDS to use Infiniband as a transport.
 	  This transport supports RDMA operations.
diff --git a/net/sunrpc/Kconfig b/net/sunrpc/Kconfig
index 6358e5271070..ac09ca803296 100644
--- a/net/sunrpc/Kconfig
+++ b/net/sunrpc/Kconfig
@@ -50,7 +50,7 @@ config SUNRPC_DEBUG
 
 config SUNRPC_XPRT_RDMA
 	tristate "RPC-over-RDMA transport"
-	depends on SUNRPC && INFINIBAND_ADDR_TRANS
+	depends on SUNRPC && INFINIBAND && INFINIBAND_ADDR_TRANS
 	default SUNRPC && INFINIBAND
 	select SG_POOL
 	help
-- 
2.9.0