From 3e1edf6a6c0c4140bb6c22fe880d924f4d10b164 Mon Sep 17 00:00:00 2001
From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: Mon, 6 Jun 2011 15:49:36 -0700
Subject: [PATCH] Staging: hv: storvsc: Add a DMI signature to support
 auto-loading

To support auto-loading the storvsc driver, add a DMI signature.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/staging/hv/storvsc_drv.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 53e9ebd9c07f..2c6d2f24b3c2 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -24,6 +24,7 @@
 #include <linux/module.h>
 #include <linux/device.h>
 #include <linux/blkdev.h>
+#include <linux/dmi.h>
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_host.h>
@@ -723,6 +724,27 @@ static struct hv_driver storvsc_drv = {
 	.remove = storvsc_remove,
 };
 
+/*
+ * We use a DMI table to determine if we should autoload this driver  This is
+ * needed by distro tools to determine if the hyperv drivers should be
+ * installed and/or configured.  We don't do anything else with the table, but
+ * it needs to be present.
+ */
+
+static const struct dmi_system_id __initconst
+hv_stor_dmi_table[] __maybe_unused  = {
+	{
+		.ident = "Hyper-V",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
+			DMI_MATCH(DMI_BOARD_NAME, "Virtual Machine"),
+		},
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(dmi, hv_stor_dmi_table);
+
 static int __init storvsc_drv_init(void)
 {
 	int ret;
-- 
2.20.1