diff options
Diffstat (limited to 'drivers/hv/hv_util.c')
| -rw-r--r-- | drivers/hv/hv_util.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/hv/hv_util.c b/drivers/hv/hv_util.c index a0667de7a04c..a62a76062508 100644 --- a/drivers/hv/hv_util.c +++ b/drivers/hv/hv_util.c @@ -274,6 +274,16 @@ static int util_probe(struct hv_device *dev, } } + /* + * The set of services managed by the util driver are not performance + * critical and do not need batched reading. Furthermore, some services + * such as KVP can only handle one message from the host at a time. + * Turn off batched reading for all util drivers before we open the + * channel. + */ + + set_channel_read_state(dev->channel, false); + ret = vmbus_open(dev->channel, 4 * PAGE_SIZE, 4 * PAGE_SIZE, NULL, 0, srv->util_cb, dev->channel); if (ret) |