summaryrefslogtreecommitdiff
path: root/drivers/net/ethernet/atheros/alx/main.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/net/ethernet/atheros/alx/main.c')
-rw-r--r--drivers/net/ethernet/atheros/alx/main.c84
1 files changed, 60 insertions, 24 deletions
diff --git a/drivers/net/ethernet/atheros/alx/main.c b/drivers/net/ethernet/atheros/alx/main.c
index 7748b276e5fd..11ef1fbe7aee 100644
--- a/drivers/net/ethernet/atheros/alx/main.c
+++ b/drivers/net/ethernet/atheros/alx/main.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2013 Johannes Berg <johannes@sipsolutions.net>
+ * Copyright (c) 2013, 2021 Johannes Berg <johannes@sipsolutions.net>
*
* This file is free software: you may copy, redistribute and/or modify it
* under the terms of the GNU General Public License as published by the
@@ -1091,8 +1091,9 @@ static int alx_init_sw(struct alx_priv *alx)
ALX_MAC_CTRL_RXFC_EN |
ALX_MAC_CTRL_TXFC_EN |
7 << ALX_MAC_CTRL_PRMBLEN_SHIFT;
+ mutex_init(&alx->mtx);
- return err;
+ return 0;
}
@@ -1122,6 +1123,8 @@ static void alx_halt(struct alx_priv *alx)
{
struct alx_hw *hw = &alx->hw;
+ lockdep_assert_held(&alx->mtx);
+
alx_netif_stop(alx);
hw->link_speed = SPEED_UNKNOWN;
hw->duplex = DUPLEX_UNKNOWN;
@@ -1147,6 +1150,8 @@ static void alx_configure(struct alx_priv *alx)
static void alx_activate(struct alx_priv *alx)
{
+ lockdep_assert_held(&alx->mtx);
+
/* hardware setting lost, restore it */
alx_reinit_rings(alx);
alx_configure(alx);
@@ -1161,7 +1166,7 @@ static void alx_activate(struct alx_priv *alx)
static void alx_reinit(struct alx_priv *alx)
{
- ASSERT_RTNL();
+ lockdep_assert_held(&alx->mtx);
alx_halt(alx);
alx_activate(alx);
@@ -1249,6 +1254,8 @@ out_disable_adv_intr:
static void __alx_stop(struct alx_priv *alx)
{
+ lockdep_assert_held(&alx->mtx);
+
alx_free_irq(alx);
cancel_work_sync(&alx->link_check_wk);
@@ -1284,6 +1291,8 @@ static void alx_check_link(struct alx_priv *alx)
int old_speed;
int err;
+ lockdep_assert_held(&alx->mtx);
+
/* clear PHY internal interrupt status, otherwise the main
* interrupt status will be asserted forever
*/
@@ -1338,12 +1347,24 @@ reset:
static int alx_open(struct net_device *netdev)
{
- return __alx_open(netdev_priv(netdev), false);
+ struct alx_priv *alx = netdev_priv(netdev);
+ int ret;
+
+ mutex_lock(&alx->mtx);
+ ret = __alx_open(alx, false);
+ mutex_unlock(&alx->mtx);
+
+ return ret;
}
static int alx_stop(struct net_device *netdev)
{
- __alx_stop(netdev_priv(netdev));
+ struct alx_priv *alx = netdev_priv(netdev);
+
+ mutex_lock(&alx->mtx);
+ __alx_stop(alx);
+ mutex_unlock(&alx->mtx);
+
return 0;
}
@@ -1353,18 +1374,18 @@ static void alx_link_check(struct work_struct *work)
alx = container_of(work, struct alx_priv, link_check_wk);
- rtnl_lock();
+ mutex_lock(&alx->mtx);
alx_check_link(alx);
- rtnl_unlock();
+ mutex_unlock(&alx->mtx);
}
static void alx_reset(struct work_struct *work)
{
struct alx_priv *alx = container_of(work, struct alx_priv, reset_wk);
- rtnl_lock();
+ mutex_lock(&alx->mtx);
alx_reinit(alx);
- rtnl_unlock();
+ mutex_unlock(&alx->mtx);
}
static int alx_tpd_req(struct sk_buff *skb)
@@ -1771,6 +1792,8 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
goto out_unmap;
}
+ mutex_lock(&alx->mtx);
+
alx_reset_pcie(hw);
phy_configured = alx_phy_configured(hw);
@@ -1781,7 +1804,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
err = alx_reset_mac(hw);
if (err) {
dev_err(&pdev->dev, "MAC Reset failed, error = %d\n", err);
- goto out_unmap;
+ goto out_unlock;
}
/* setup link to put it in a known good starting state */
@@ -1791,7 +1814,7 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
dev_err(&pdev->dev,
"failed to configure PHY speed/duplex (err=%d)\n",
err);
- goto out_unmap;
+ goto out_unlock;
}
}
@@ -1824,9 +1847,11 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
if (!alx_get_phy_info(hw)) {
dev_err(&pdev->dev, "failed to identify PHY\n");
err = -EIO;
- goto out_unmap;
+ goto out_unlock;
}
+ mutex_unlock(&alx->mtx);
+
INIT_WORK(&alx->link_check_wk, alx_link_check);
INIT_WORK(&alx->reset_wk, alx_reset);
netif_carrier_off(netdev);
@@ -1843,6 +1868,8 @@ static int alx_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
return 0;
+out_unlock:
+ mutex_unlock(&alx->mtx);
out_unmap:
iounmap(hw->hw_addr);
out_free_netdev:
@@ -1870,6 +1897,8 @@ static void alx_remove(struct pci_dev *pdev)
pci_disable_pcie_error_reporting(pdev);
pci_disable_device(pdev);
+ mutex_destroy(&alx->mtx);
+
free_netdev(alx->dev);
}
@@ -1881,7 +1910,11 @@ static int alx_suspend(struct device *dev)
if (!netif_running(alx->dev))
return 0;
netif_device_detach(alx->dev);
+
+ mutex_lock(&alx->mtx);
__alx_stop(alx);
+ mutex_unlock(&alx->mtx);
+
return 0;
}
@@ -1891,20 +1924,23 @@ static int alx_resume(struct device *dev)
struct alx_hw *hw = &alx->hw;
int err;
+ mutex_lock(&alx->mtx);
alx_reset_phy(hw);
- if (!netif_running(alx->dev))
- return 0;
+ if (!netif_running(alx->dev)) {
+ err = 0;
+ goto unlock;
+ }
- rtnl_lock();
err = __alx_open(alx, true);
- rtnl_unlock();
if (err)
- return err;
+ goto unlock;
netif_device_attach(alx->dev);
- return 0;
+unlock:
+ mutex_unlock(&alx->mtx);
+ return err;
}
static SIMPLE_DEV_PM_OPS(alx_pm_ops, alx_suspend, alx_resume);
@@ -1923,7 +1959,7 @@ static pci_ers_result_t alx_pci_error_detected(struct pci_dev *pdev,
dev_info(&pdev->dev, "pci error detected\n");
- rtnl_lock();
+ mutex_lock(&alx->mtx);
if (netif_running(netdev)) {
netif_device_detach(netdev);
@@ -1935,7 +1971,7 @@ static pci_ers_result_t alx_pci_error_detected(struct pci_dev *pdev,
else
pci_disable_device(pdev);
- rtnl_unlock();
+ mutex_unlock(&alx->mtx);
return rc;
}
@@ -1948,7 +1984,7 @@ static pci_ers_result_t alx_pci_error_slot_reset(struct pci_dev *pdev)
dev_info(&pdev->dev, "pci error slot reset\n");
- rtnl_lock();
+ mutex_lock(&alx->mtx);
if (pci_enable_device(pdev)) {
dev_err(&pdev->dev, "Failed to re-enable PCI device after reset\n");
@@ -1961,7 +1997,7 @@ static pci_ers_result_t alx_pci_error_slot_reset(struct pci_dev *pdev)
if (!alx_reset_mac(hw))
rc = PCI_ERS_RESULT_RECOVERED;
out:
- rtnl_unlock();
+ mutex_unlock(&alx->mtx);
return rc;
}
@@ -1973,14 +2009,14 @@ static void alx_pci_error_resume(struct pci_dev *pdev)
dev_info(&pdev->dev, "pci error resume\n");
- rtnl_lock();
+ mutex_lock(&alx->mtx);
if (netif_running(netdev)) {
alx_activate(alx);
netif_device_attach(netdev);
}
- rtnl_unlock();
+ mutex_unlock(&alx->mtx);
}
static const struct pci_error_handlers alx_err_handlers = {
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-12 08:37:50 +0000