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be2net: avoid napi_disable() when it has not been enabled

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When RQ creation fails in be_open(), driver jumps to be_close() where
napi_disable() is done without a prior napi_enable(); leading to a hang.
This change is needed as there is no way to see if napi is enable/disabled.

Signed-off-by: Kalesh AP <kalesh.purayil@emulex.com>
Signed-off-by: Somnath Kotur <somnath.kotur@emulex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Somnath Kotur 2013-05-02 03:36:55 +00:00 committed by David S. Miller
parent 701962d0bb
commit 04d3d6247f
2 changed files with 7 additions and 2 deletions
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1
drivers/net/ethernet/emulex/benet/be.h
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@ -327,6 +327,7 @@ enum vf_state {
#define BE_FLAGS_LINK_STATUS_INIT 1
#define BE_FLAGS_WORKER_SCHEDULED (1 << 3)
#define BE_FLAGS_NAPI_ENABLED (1 << 9)
#define BE_UC_PMAC_COUNT 30
#define BE_VF_UC_PMAC_COUNT 2
#define BE_FLAGS_QNQ_ASYNC_EVT_RCVD (1 << 11)

8
drivers/net/ethernet/emulex/benet/be_main.c
View File

@ -2548,8 +2548,11 @@ static int be_close(struct net_device *netdev)
be_roce_dev_close(adapter);
for_all_evt_queues(adapter, eqo, i)
napi_disable(&eqo->napi);
if (adapter->flags & BE_FLAGS_NAPI_ENABLED) {
for_all_evt_queues(adapter, eqo, i)
napi_disable(&eqo->napi);
adapter->flags &= ~BE_FLAGS_NAPI_ENABLED;
}
be_async_mcc_disable(adapter);
@ -2657,6 +2660,7 @@ static int be_open(struct net_device *netdev)
napi_enable(&eqo->napi);
be_eq_notify(adapter, eqo->q.id, true, false, 0);
}
adapter->flags |= BE_FLAGS_NAPI_ENABLED;
status = be_cmd_link_status_query(adapter, NULL, &link_status, 0);
if (!status)