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| author | Somnath Kotur <somnath.kotur@emulex.com> | 2013-05-02 03:36:55 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-05-02 16:43:27 -0400 |
| commit | 04d3d6247fa39d4ee6488f1bd5314879ab9d5c9d (patch) | |
| tree | b2a981719e0709a63df0e428598d7bba6b57d903 /drivers | |
| parent | 701962d0bbc74cfe60a93389a3394ee358362a71 (diff) | |
| download | linux-04d3d6247fa39d4ee6488f1bd5314879ab9d5c9d.tar.gz linux-04d3d6247fa39d4ee6488f1bd5314879ab9d5c9d.tar.bz2 linux-04d3d6247fa39d4ee6488f1bd5314879ab9d5c9d.zip | |
be2net: avoid napi_disable() when it has not been enabled
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be.h | 1 | ||||
| -rw-r--r-- | drivers/net/ethernet/emulex/benet/be_main.c | 8 |
2 files changed, 7 insertions, 2 deletions
diff --git a/drivers/net/ethernet/emulex/benet/be.h b/drivers/net/ethernet/emulex/benet/be.h index 234ce6f07544..f544b297c9ab 100644 --- a/drivers/net/ethernet/emulex/benet/be.h +++ b/drivers/net/ethernet/emulex/benet/be.h @@ -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) diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c index 591a8675a13d..e6b5c4cd8c0c 100644 --- a/drivers/net/ethernet/emulex/benet/be_main.c +++ b/drivers/net/ethernet/emulex/benet/be_main.c @@ -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) |