From: Shannon Nelson <snel...@pensando.io>
[ Upstream commit 6a6014e2fb276753d4dc9b803370e7af7f57e30b ]
We can prevent potential incorrect DMA access attempts from the
NIC by enabling bus-master after the reset, and by disabling
bus-master earlier in cleanup.
Signed-off-by: Shannon Nelson <snel...@pensando.io>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
index 2924cde440aa8..85c686c16741f 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_bus_pci.c
@@ -247,12 +247,11 @@ static int ionic_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
goto err_out_pci_disable_device;
}
- pci_set_master(pdev);
pcie_print_link_status(pdev);
err = ionic_map_bars(ionic);
if (err)
- goto err_out_pci_clear_master;
+ goto err_out_pci_disable_device;
/* Configure the device */
err = ionic_setup(ionic);
@@ -260,6 +259,7 @@ static int ionic_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
dev_err(dev, "Cannot setup device: %d, aborting\n", err);
goto err_out_unmap_bars;
}
+ pci_set_master(pdev);
err = ionic_identify(ionic);
if (err) {
@@ -350,6 +350,7 @@ static int ionic_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
ionic_reset(ionic);
err_out_teardown:
ionic_dev_teardown(ionic);
+ pci_clear_master(pdev);
/* Don't fail the probe for these errors, keep
* the hw interface around for inspection
*/
@@ -358,8 +359,6 @@ static int ionic_probe(struct pci_dev *pdev, const struct
pci_device_id *ent)
err_out_unmap_bars:
ionic_unmap_bars(ionic);
pci_release_regions(pdev);
-err_out_pci_clear_master:
- pci_clear_master(pdev);
err_out_pci_disable_device:
pci_disable_device(pdev);
err_out_debugfs_del_dev:
@@ -389,9 +388,9 @@ static void ionic_remove(struct pci_dev *pdev)
ionic_port_reset(ionic);
ionic_reset(ionic);
ionic_dev_teardown(ionic);
+ pci_clear_master(pdev);
ionic_unmap_bars(ionic);
pci_release_regions(pdev);
- pci_clear_master(pdev);
pci_disable_device(pdev);
ionic_debugfs_del_dev(ionic);
mutex_destroy(&ionic->dev_cmd_lock);
--
2.25.1
