linux-kernel - [PATCH 01/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to storvsc_driver

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Date:	Tue, 26 Apr 2011 09:20:18 -0700
From:	"K. Y. Srinivasan" <kys@...rosoft.com>
To:	gregkh@...e.de, linux-kernel@...r.kernel.org,
	devel@...uxdriverproject.org, virtualization@...ts.osdl.org
Cc:	"K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Abhishek Kane <v-abkane@...rosoft.com>,
	Hank Janssen <hjanssen@...rosoft.com>
Subject: [PATCH 01/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to storvsc_driver_object

In preparation for getting rid of the priv element from struct hv_driver,
introduce a function that maps a generic struct driver pointer to struct
storvsc_driver_object.

Signed-off-by: K. Y. Srinivasan <kys@...rosoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@...rosoft.com>
Signed-off-by: Abhishek Kane <v-abkane@...rosoft.com>
Signed-off-by: Hank Janssen <hjanssen@...rosoft.com>
---
 drivers/staging/hv/storvsc_api.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/storvsc_api.h b/drivers/staging/hv/storvsc_api.h
index c98139c..b60a058 100644
--- a/drivers/staging/hv/storvsc_api.h
+++ b/drivers/staging/hv/storvsc_api.h
@@ -28,6 +28,7 @@
 #include <linux/kernel.h>
 #include "vstorage.h"
 #include "vmbus_api.h"
+#include "vmbus.h"
 
 /* Defines */
 #define STORVSC_RING_BUFFER_SIZE			(20*PAGE_SIZE)
@@ -153,6 +154,13 @@ static inline struct storvsc_driver_object *hvdr_to_stordr(struct hv_driver *d)
 	return container_of(d, struct storvsc_driver_object, base);
 }
 
+static inline
+struct storvsc_driver_object *drv_to_stordrv(struct device_driver *d)
+{
+	struct hv_driver *hvdrv = drv_to_hv_drv(d);
+	return hvdr_to_stordr(hvdrv);
+}
+
 /* Interface */
 
 int stor_vsc_on_device_add(struct hv_device *device,
-- 
1.7.4.1

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