From: David Christensen <d...@linux.vnet.ibm.com>
[ Upstream commit 3a2656a211caf35e56afc9425e6e518fa52f7fbc ]
The driver function tg3_io_error_detected() calls napi_disable twice,
without an intervening napi_enable, when the number of EEH errors exceeds
eeh_max_freezes, resulting in an indefinite sleep while holding rtnl_lock.
Add check for pcierr_recovery which skips code already executed for the
"Frozen" state.
Signed-off-by: David Christensen <d...@linux.vnet.ibm.com>
Reviewed-by: Michael Chan <michael.c...@broadcom.com>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/net/ethernet/broadcom/tg3.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/tg3.c
b/drivers/net/ethernet/broadcom/tg3.c
index ff98a82b7bc47..d71ce7634ac19 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -18170,8 +18170,8 @@ static pci_ers_result_t tg3_io_error_detected(struct
pci_dev *pdev,
rtnl_lock();
- /* We probably don't have netdev yet */
- if (!netdev || !netif_running(netdev))
+ /* Could be second call or maybe we don't have netdev yet */
+ if (!netdev || tp->pcierr_recovery || !netif_running(netdev))
goto done;
/* We needn't recover from permanent error */
--
2.25.1
