From: Stephen Hemminger <stephen@networkplumber.org>
To: dev@dpdk.org
Cc: stable@dpdk.org, Stephen Hemminger <sthemmin@microsoft.com>
Subject: [dpdk-dev] [PATCH 4/7] bus/vmbus: stop mapping if empty resource found
Date: Thu, 7 Feb 2019 19:44:04 -0800 [thread overview]
Message-ID: <20190208034407.7865-5-stephen@networkplumber.org> (raw)
In-Reply-To: <20190208034407.7865-1-stephen@networkplumber.org>
From: Stephen Hemminger <sthemmin@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@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
next prev parent reply other threads:[~2019-02-08 3:44 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-08 3:44 [dpdk-dev] [PATCH 0/7] vmbus/netvsc: fix multi-process support Stephen Hemminger
2019-02-08 3:44 ` [dpdk-dev] [PATCH 1/7] bus/vmbus: fix secondary process setup Stephen Hemminger
2019-02-08 3:44 ` [dpdk-dev] [PATCH 2/7] net/netvsc: fix VF support with secondary process Stephen Hemminger
2019-02-08 3:44 ` [dpdk-dev] [PATCH 3/7] bus/vmbus: fix check for mmap failure Stephen Hemminger
2019-02-08 3:44 ` Stephen Hemminger [this message]
2019-02-08 3:44 ` [dpdk-dev] [PATCH 5/7] bus/vmbus: map ring in secondary Stephen Hemminger
2019-02-08 3:44 ` [dpdk-dev] [PATCH 6/7] bus/vmbus: refactor secondary mapping Stephen Hemminger
2019-02-08 3:44 ` [dpdk-dev] [PATCH 7/7] net/netvsc: remove unnecessary format of ether address Stephen Hemminger
2019-03-29 9:51 ` [dpdk-dev] [dpdk-stable] [PATCH 0/7] vmbus/netvsc: fix multi-process support Thomas Monjalon
2019-03-29 9:51 ` Thomas Monjalon
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