[dpdk-stable] [PATCH 4/7] bus/vmbus: stop mapping if empty resource found

[Stephen Hemminger]

From: Stephen Hemminger <sthemmin at microsoft.com>

If vmbus is run on older kernel (without all the uio mappings),
then the bus driver should stop when it hits the missing mappings
rather than recording the empty values.

Fixes: 831dba47bd36 ("bus/vmbus: add Hyper-V virtual bus support")
Signed-off-by: Stephen Hemminger <sthemmin at microsoft.com>
---
 drivers/bus/vmbus/vmbus_common_uio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/bus/vmbus/vmbus_common_uio.c b/drivers/bus/vmbus/vmbus_common_uio.c
index 46e233d9fac3..a6545b758e36 100644
--- a/drivers/bus/vmbus/vmbus_common_uio.c
+++ b/drivers/bus/vmbus/vmbus_common_uio.c
@@ -98,9 +98,9 @@ vmbus_uio_map_primary(struct rte_vmbus_device *dev)
 
 	/* Map the resources */
 	for (i = 0; i < VMBUS_MAX_RESOURCE; i++) {
-		/* skip empty BAR */
+		/* stop at empty BAR */
 		if (dev->resource[i].len == 0)
-			continue;
+			break;
 
 		ret = vmbus_uio_map_resource_by_index(dev, i, uio_res, 0);
 		if (ret)
-- 
2.20.1