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netvsc: use hv_get_bytes_to_read

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Don't need need to look at write space in netvsc_close.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2017-06-08 16:21:19 -07:00 committed by David S. Miller
parent 60b86665af
commit 4097596278
1 changed files with 3 additions and 7 deletions
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10
drivers/net/hyperv/netvsc_drv.c
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@ -120,7 +120,7 @@ static int netvsc_close(struct net_device *net)
struct net_device_context *net_device_ctx = netdev_priv(net);
struct netvsc_device *nvdev = rtnl_dereference(net_device_ctx->nvdev);
int ret;
u32 aread, awrite, i, msec = 10, retry = 0, retry_max = 20;
u32 aread, i, msec = 10, retry = 0, retry_max = 20;
struct vmbus_channel *chn;
netif_tx_disable(net);
@ -141,15 +141,11 @@ static int netvsc_close(struct net_device *net)
if (!chn)
continue;
hv_get_ringbuffer_availbytes(&chn->inbound, &aread,
&awrite);
aread = hv_get_bytes_to_read(&chn->inbound);
if (aread)
break;
hv_get_ringbuffer_availbytes(&chn->outbound, &aread,
&awrite);
aread = hv_get_bytes_to_read(&chn->outbound);
if (aread)
break;
}