releases/3.0.1/staging-hv-vmbus-increase-the-timeout-value-in-the-vmbus.patch

   1 From 2dfde9644fe8c4a77f9c73f95b25d6300ca23b5d Mon Sep 17 00:00:00 2001
   2 From: "K. Y. Srinivasan" <kys@microsoft.com>
   3 Date: Thu, 16 Jun 2011 13:16:34 -0700
   4 Subject: Staging: hv: vmbus: Increase the timeout value in the vmbus
   5  driver
   6
   7 From: "K. Y. Srinivasan" <kys@microsoft.com>
   8
   9 commit 2dfde9644fe8c4a77f9c73f95b25d6300ca23b5d upstream.
  10
  11 On some loaded windows hosts, we have discovered that the host may not
  12 respond to guest requests within the specified time (one second)
  13 as evidenced by the guest timing out. Fix this problem by increasing
  14 the timeout to 5 seconds.
  15
  16 It may be useful to apply this patch to the 3.0 kernel as well.
  17
  18 Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
  19 Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
  20 Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
  21 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  22
  23 ---
  24  drivers/staging/hv/channel.c      |    2 +-
  25  drivers/staging/hv/channel_mgmt.c |    2 +-
  26  drivers/staging/hv/connection.c   |    2 +-
  27  3 files changed, 3 insertions(+), 3 deletions(-)
  28
  29 --- a/drivers/staging/hv/channel.c
  30 +++ b/drivers/staging/hv/channel.c
  31 @@ -212,7 +212,7 @@ int vmbus_open(struct vmbus_channel *new
  32         if (ret != 0)
  33                 goto Cleanup;
  34
  35 -       t = wait_for_completion_timeout(&openInfo->waitevent, HZ);
  36 +       t = wait_for_completion_timeout(&openInfo->waitevent, 5*HZ);
  37         if (t == 0) {
  38                 err = -ETIMEDOUT;
  39                 goto errorout;
  40 --- a/drivers/staging/hv/channel_mgmt.c
  41 +++ b/drivers/staging/hv/channel_mgmt.c
  42 @@ -773,7 +773,7 @@ int vmbus_request_offers(void)
  43                 goto cleanup;
  44         }
  45
  46 -       t = wait_for_completion_timeout(&msginfo->waitevent, HZ);
  47 +       t = wait_for_completion_timeout(&msginfo->waitevent, 5*HZ);
  48         if (t == 0) {
  49                 ret = -ETIMEDOUT;
  50                 goto cleanup;
  51 --- a/drivers/staging/hv/connection.c
  52 +++ b/drivers/staging/hv/connection.c
  53 @@ -135,7 +135,7 @@ int vmbus_connect(void)
  54         }
  55
  56         /* Wait for the connection response */
  57 -       t =  wait_for_completion_timeout(&msginfo->waitevent, HZ);
  58 +       t =  wait_for_completion_timeout(&msginfo->waitevent, 5*HZ);
  59         if (t == 0) {
  60                 spin_lock_irqsave(&vmbus_connection.channelmsg_lock,
  61                                 flags);