IB/ipath: Deprecate ipath driver and move to staging.

It is now time for the ipath driver to begin to be phased out of the kernel.
This patch moves the ipath driver from the Infiniband sub tree to the staging
area where it will remain until the code is removed from the kernel in a few
releases.

Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

MAINTAINERS

@@ -5536,7 +5536,7 @@ IPATH DRIVER
 M:	Mike Marciniszyn <infinipath@intel.com>
 L:	linux-rdma@vger.kernel.org
 S:	Maintained
-F:	drivers/infiniband/hw/ipath/
+F:	drivers/staging/rdma/ipath/
 
 IPMI SUBSYSTEM
 M:	Corey Minyard <minyard@acm.org>

drivers/infiniband/Kconfig

@@ -55,7 +55,6 @@ config INFINIBAND_ADDR_TRANS
 	default y
 
 source "drivers/infiniband/hw/mthca/Kconfig"
-source "drivers/infiniband/hw/ipath/Kconfig"
 source "drivers/infiniband/hw/qib/Kconfig"
 source "drivers/infiniband/hw/ehca/Kconfig"
 source "drivers/infiniband/hw/amso1100/Kconfig"

drivers/infiniband/hw/Makefile

@@ -1,5 +1,4 @@
 obj-$(CONFIG_INFINIBAND_MTHCA)		+= mthca/
-obj-$(CONFIG_INFINIBAND_IPATH)		+= ipath/
 obj-$(CONFIG_INFINIBAND_QIB)		+= qib/
 obj-$(CONFIG_INFINIBAND_EHCA)		+= ehca/
 obj-$(CONFIG_INFINIBAND_AMSO1100)	+= amso1100/

drivers/staging/rdma/Kconfig

@@ -22,4 +22,6 @@ menuconfig STAGING_RDMA
 # Please keep entries in alphabetic order
 if STAGING_RDMA
 
+source "drivers/staging/rdma/ipath/Kconfig"
+
 endif

drivers/staging/rdma/Makefile

@@ -1 +1,2 @@
 # Entries for RDMA_STAGING tree
+obj-$(CONFIG_INFINIBAND_IPATH)	+= ipath/

drivers/infiniband/hw/ipath/Kconfig → drivers/staging/rdma/ipath/Kconfig

@@ -2,7 +2,7 @@ config INFINIBAND_IPATH
 	tristate "QLogic HTX HCA support"
 	depends on 64BIT && NET && HT_IRQ
 	---help---
-	This is a driver for the obsolete QLogic Hyper-Transport
+	This is a driver for the deprecated QLogic Hyper-Transport
 	IB host channel adapter (model QHT7140),
 	including InfiniBand verbs support.  This driver allows these
 	devices to be used with both kernel upper level protocols such
@@ -12,3 +12,5 @@ config INFINIBAND_IPATH
 
 	If you have this hardware you will need to boot with PAT disabled
 	on your x86-64 systems, use the nopat kernel parameter.
+
+	Note that this driver will soon be removed entirely from the kernel.

drivers/staging/rdma/ipath/TODO

@@ -0,0 +1,5 @@
+The ipath driver has been moved to staging in preparation for its removal in a
+few releases. The driver will be deleted during the 4.6 merge window.
+
+Contact Dennis Dalessandro <dennis.dalessandro@intel.com> and
+Cc: linux-rdma@vger.kernel.org