[PATCH v6 net-next 10/10] qede: make driver reliable on unload after failures
From: Igor Russkikh <hidden>
Date: 2020-08-20 18:53:08
Subsystem:
networking drivers, qlogic ql4xxx ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
In case recovery was not successful, netdev still should be present. But we should clear cdev if something bad happens on recovery. We also check cdev for null on dev close. That could be a case if recovery was not successful. Signed-off-by: Igor Russkikh <redacted> Signed-off-by: Alexander Lobakin <redacted> Signed-off-by: Michal Kalderon <redacted> --- drivers/net/ethernet/qlogic/qede/qede_main.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/qlogic/qede/qede_main.c b/drivers/net/ethernet/qlogic/qede/qede_main.c
index e6daf2d51533..99193a7f20c0 100644
--- a/drivers/net/ethernet/qlogic/qede/qede_main.c
+++ b/drivers/net/ethernet/qlogic/qede/qede_main.c@@ -1238,7 +1238,10 @@ static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level, err4: qede_rdma_dev_remove(edev, (mode == QEDE_PROBE_RECOVERY)); err3: - free_netdev(edev->ndev); + if (mode != QEDE_PROBE_RECOVERY) + free_netdev(edev->ndev); + else + edev->cdev = NULL; err2: qed_ops->common->slowpath_stop(cdev); err1:
@@ -2473,7 +2476,8 @@ static int qede_close(struct net_device *ndev) qede_unload(edev, QEDE_UNLOAD_NORMAL, false); - edev->ops->common->update_drv_state(edev->cdev, false); + if (edev->cdev) + edev->ops->common->update_drv_state(edev->cdev, false); return 0; }
--
2.17.1