rdma: Delete the ib_ucm module

This has been marked CONFIG_BROKEN for over a year now with no complaints.
Delete the whole thing for good.

The module provided the /dev/infiniband/ucmX interface.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/Kconfig

@@ -35,17 +35,6 @@ config INFINIBAND_USER_ACCESS
 	  libibverbs, libibcm and a hardware driver library from
 	  rdma-core <https://github.com/linux-rdma/rdma-core>.
 
-config INFINIBAND_USER_ACCESS_UCM
-	tristate "Userspace CM (UCM, DEPRECATED)"
-	depends on BROKEN || COMPILE_TEST
-	depends on INFINIBAND_USER_ACCESS
-	help
-	  The UCM module has known security flaws, which no one is
-	  interested to fix. The user-space part of this code was
-	  dropped from the upstream a long time ago.
-
-	  This option is DEPRECATED and planned to be removed.
-
 config INFINIBAND_EXP_LEGACY_VERBS_NEW_UAPI
 	bool "Allow experimental legacy verbs in new ioctl uAPI  (EXPERIMENTAL)"
 	depends on INFINIBAND_USER_ACCESS

drivers/infiniband/core/Makefile

@@ -6,7 +6,6 @@ obj-$(CONFIG_INFINIBAND) +=		ib_core.o ib_cm.o iw_cm.o \
 					$(infiniband-y)
 obj-$(CONFIG_INFINIBAND_USER_MAD) +=	ib_umad.o
 obj-$(CONFIG_INFINIBAND_USER_ACCESS) += ib_uverbs.o $(user_access-y)
-obj-$(CONFIG_INFINIBAND_USER_ACCESS_UCM) += ib_ucm.o $(user_access-y)
 
 ib_core-y :=			packer.o ud_header.o verbs.o cq.o rw.o sysfs.o \
 				device.o fmr_pool.o cache.o netlink.o \
@@ -29,8 +28,6 @@ rdma_ucm-y :=			ucma.o
 
 ib_umad-y :=			user_mad.o
 
-ib_ucm-y :=			ucm.o
-
 ib_uverbs-y :=			uverbs_main.o uverbs_cmd.o uverbs_marshall.o \
 				rdma_core.o uverbs_std_types.o uverbs_ioctl.o \
 				uverbs_std_types_cq.o \