Thread (175 messages) 175 messages, 9 authors, 2011-08-25
STALE5393d

[PATCH 090/117] Staging: hv: netvsc: Introduce state to manage the lifecycle of net device

From: "K. Y. Srinivasan" <kys@microsoft.com>
Date: 2011-07-15 17:38:48
Also in: lkml
Subsystem: staging subsystem, the rest · Maintainers: Greg Kroah-Hartman, Linus Torvalds

Introduce state to manage the lifecycle of net device.

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
---
 drivers/staging/hv/hyperv_net.h |    1 +
 drivers/staging/hv/netvsc.c     |    3 +++
 2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/hv/hyperv_net.h b/drivers/staging/hv/hyperv_net.h
index 5782fea..0b347c1 100644
--- a/drivers/staging/hv/hyperv_net.h
+++ b/drivers/staging/hv/hyperv_net.h
@@ -371,6 +371,7 @@ struct netvsc_device {
 
 	atomic_t refcnt;
 	atomic_t num_outstanding_sends;
+	bool destroy;
 	/*
 	 * List of free preallocated hv_netvsc_packet to represent receive
 	 * packet
diff --git a/drivers/staging/hv/netvsc.c b/drivers/staging/hv/netvsc.c
index 7722102..67cf7fb 100644
--- a/drivers/staging/hv/netvsc.c
+++ b/drivers/staging/hv/netvsc.c
@@ -43,6 +43,7 @@ static struct netvsc_device *alloc_net_device(struct hv_device *device)
 	/* Set to 2 to allow both inbound and outbound traffic */
 	atomic_set(&net_device->refcnt, 2);
 
+	net_device->destroy = false;
 	net_device->dev = device;
 	device->ext = net_device;
 
@@ -404,6 +405,8 @@ int netvsc_device_remove(struct hv_device *device)
 		return -ENODEV;
 	}
 
+	net_device->destroy = true;
+
 	/* Wait for all send completions */
 	while (atomic_read(&net_device->num_outstanding_sends)) {
 		dev_err(&device->device,
-- 
1.7.4.1
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