[PATCH 19/46] Staging: hv: storvsc: Handle IDE devices using the storvsc driver

["K. Y. Srinivasan" <kys@microsoft.com>]

Now, enable handling of all IDE devices by extending the storvsc
device id table to handle IDE guid. As part of this cleanup Kconfig
and Hyper-V Makefile to not build the IDE driver (blkvsc).

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/staging/hv/Kconfig       |    7 -------
 drivers/staging/hv/Makefile      |    2 --
 drivers/staging/hv/storvsc_drv.c |   21 ++++++++-------------
 3 files changed, 8 insertions(+), 22 deletions(-)

diff --git a/drivers/staging/hv/Kconfig b/drivers/staging/hv/Kconfig
index 5e0c9f6..26b5064 100644
--- a/drivers/staging/hv/Kconfig
+++ b/drivers/staging/hv/Kconfig
@@ -15,13 +15,6 @@ config HYPERV_STORAGE
 	help
 	 Select this option to enable the Hyper-V virtual storage driver.
 
-config HYPERV_BLOCK
-	tristate "Microsoft Hyper-V virtual block driver"
-	depends on BLOCK && SCSI && (LBDAF || 64BIT)
-	default HYPERV
-	help
-	  Select this option to enable the Hyper-V virtual block driver.
-
 config HYPERV_NET
 	tristate "Microsoft Hyper-V virtual network driver"
 	depends on NET
diff --git a/drivers/staging/hv/Makefile b/drivers/staging/hv/Makefile
index 3004674..bb89437 100644
--- a/drivers/staging/hv/Makefile
+++ b/drivers/staging/hv/Makefile
@@ -1,6 +1,5 @@
 obj-$(CONFIG_HYPERV)		+= hv_vmbus.o hv_timesource.o
 obj-$(CONFIG_HYPERV_STORAGE)	+= hv_storvsc.o
-obj-$(CONFIG_HYPERV_BLOCK)	+= hv_blkvsc.o
 obj-$(CONFIG_HYPERV_NET)	+= hv_netvsc.o
 obj-$(CONFIG_HYPERV_UTILS)	+= hv_utils.o
 obj-$(CONFIG_HYPERV_MOUSE)	+= hv_mouse.o
@@ -9,6 +8,5 @@ hv_vmbus-y := vmbus_drv.o \
 		 hv.o connection.o channel.o \
 		 channel_mgmt.o ring_buffer.o
 hv_storvsc-y := storvsc_drv.o storvsc.o
-hv_blkvsc-y := blkvsc_drv.o  storvsc.o
 hv_netvsc-y := netvsc_drv.o netvsc.o rndis_filter.o
 hv_utils-y := hv_util.o hv_kvp.o
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index f434200..9464f99 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -645,27 +645,22 @@ static struct scsi_host_template scsi_driver = {
 	.dma_boundary =		PAGE_SIZE-1,
 };
 
+/*
+ * The storvsc_probe function assumes that the IDE guid
+ * is the second entry.
+ */
 static const struct hv_vmbus_device_id id_table[] = {
 	/* SCSI guid */
 	{ VMBUS_DEVICE(0xd9, 0x63, 0x61, 0xba, 0xa1, 0x04, 0x29, 0x4d,
 		       0xb6, 0x05, 0x72, 0xe2, 0xff, 0xb1, 0xdc, 0x7f) },
+	/* IDE guid */
+	{ VMBUS_DEVICE(0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
+		       0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5) },
 	{ },
 };
 
 MODULE_DEVICE_TABLE(vmbus, id_table);
 
-/*
- * This declaration is temporary; once we get the
- * infrastructure in place, we will integrate with
- * id_table.
- */
-
-static const uuid_le ide_blk_guid = {
-	.b = {
-		0x32, 0x26, 0x41, 0x32, 0xcb, 0x86, 0xa2, 0x44,
-		0x9b, 0x5c, 0x50, 0xd1, 0x41, 0x73, 0x54, 0xf5
-	}
-};
 
 /*
  * storvsc_probe - Add a new device for this driver
@@ -681,7 +676,7 @@ static int storvsc_probe(struct hv_device *device)
 	int path = 0;
 	int target = 0;
 
-	if (!uuid_le_cmp(device->dev_type, ide_blk_guid))
+	if (!memcmp(&device->dev_type.b, id_table[1].guid, sizeof(uuid_le)))
 		dev_is_ide = true;
 	else
 		dev_is_ide = false;
-- 
1.7.4.1