linux-kernel - [PATCH 04/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to struct netvsc

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Date:	Tue, 26 Apr 2011 09:20:21 -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 04/25] Staging: hv: Introduce a function to map a generic driver pointer to a pointer to struct netvsc_driver

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

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/netvsc_api.h |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/hv/netvsc_api.h b/drivers/staging/hv/netvsc_api.h
index b4bed36..48b512b 100644
--- a/drivers/staging/hv/netvsc_api.h
+++ b/drivers/staging/hv/netvsc_api.h
@@ -26,6 +26,7 @@
 #define _NETVSC_API_H_
 
 #include "vmbus_api.h"
+#include "vmbus.h"
 
 /* Fwd declaration */
 struct hv_netvsc_packet;
@@ -103,6 +104,13 @@ struct netvsc_driver {
 	void *ctx;
 };
 
+static inline
+struct netvsc_driver *drv_to_netvscdrv(struct device_driver *d)
+{
+	struct hv_driver *hvdrv = drv_to_hv_drv(d);
+	return container_of(hvdrv, struct netvsc_driver, base);
+}
+
 struct netvsc_device_info {
 	unsigned char mac_adr[6];
 	bool link_state;	/* 0 - link up, 1 - link down */
-- 
1.7.4.1

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