[dpdk-dev] [PATCH 1/3] eal: remove useless checks for already probed device
Thomas Monjalon
thomas at monjalon.net
Sat Mar 2 03:42:51 CET 2019
The function eal_dev_hotplug_request_to_secondary() never returns
-EEXIST result. The case of already probed device is filtered out.
The test in __handle_secondary_request() was always true.
The test in rte_dev_probe() was never true, and that's fine not
returning -EEXIST if device is already attached in secondary processes.
Fixes: 494db286f37d ("eal: fix multi-process hotplug if attached in secondary")
Cc: dariusz.stojaczyk at intel.com
Cc: qi.z.zhang at intel.com
Cc: stable at dpdk.org
Signed-off-by: Thomas Monjalon <thomas at monjalon.net>
---
lib/librte_eal/common/eal_common_dev.c | 9 +--------
lib/librte_eal/common/hotplug_mp.c | 3 +--
2 files changed, 2 insertions(+), 10 deletions(-)
diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c
index fd7f5ca7d5..048c0b025f 100644
--- a/lib/librte_eal/common/eal_common_dev.c
+++ b/lib/librte_eal/common/eal_common_dev.c
@@ -247,18 +247,11 @@ rte_dev_probe(const char *devargs)
goto rollback;
}
- /**
- * if any secondary failed to attach, we need to consider if rollback
- * is necessary.
- */
+ /* if any secondary failed to attach, need to rollback. */
if (req.result != 0) {
RTE_LOG(ERR, EAL,
"Failed to attach device on secondary process\n");
ret = req.result;
-
- /* for -EEXIST, we don't need to rollback. */
- if (ret == -EEXIST)
- return ret;
goto rollback;
}
diff --git a/lib/librte_eal/common/hotplug_mp.c b/lib/librte_eal/common/hotplug_mp.c
index 4052a5c7fb..94bd1d896e 100644
--- a/lib/librte_eal/common/hotplug_mp.c
+++ b/lib/librte_eal/common/hotplug_mp.c
@@ -110,8 +110,7 @@ __handle_secondary_request(void *param)
if (tmp_req.result != 0) {
ret = tmp_req.result;
RTE_LOG(ERR, EAL, "Failed to hotplug add device on secondary\n");
- if (ret != -EEXIST)
- goto rollback;
+ goto rollback;
}
} else if (req->t == EAL_DEV_REQ_TYPE_DETACH) {
ret = rte_devargs_parse(&da, req->devargs);
--
2.20.1
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