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bus/vmbus: stop mapping if empty resource found

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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")
Cc: stable@dpdk.org

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
This commit is contained in:
Stephen Hemminger 2019-02-07 19:44:04 -08:00 committed by Thomas Monjalon
parent 3f9277031a
commit 41a7f8cbee
1 changed files with 2 additions and 2 deletions
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4
drivers/bus/vmbus/vmbus_common_uio.c
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@ -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)