6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Jiawen Wu <jiawenwu@xxxxxxxxxxxxxx>
[ Upstream commit 935124dd5883b5de68dc5a94f582480a10643dc9 ]
When using MSI/INTx interrupt, the shared interrupts are still being
handled in the device remove routine, before free IRQs. So isb memory
is still read after it is freed. Thus move wx_free_isb_resources()
from txgbe_close() to txgbe_remove(). And fix the improper isb free
action in txgbe_open() error handling path.
Fixes: aefd013624a1 ("net: txgbe: use irq_domain for interrupt controller")
Signed-off-by: Jiawen Wu <jiawenwu@xxxxxxxxxxxxxx>
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/wangxun/libwx/wx_lib.c | 4 +++-
drivers/net/ethernet/wangxun/ngbe/ngbe_main.c | 2 ++
drivers/net/ethernet/wangxun/txgbe/txgbe_main.c | 7 ++++---
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/wangxun/libwx/wx_lib.c b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
index bf02bd0f08407..88e5e390770b5 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_lib.c
+++ b/drivers/net/ethernet/wangxun/libwx/wx_lib.c
@@ -2028,6 +2028,9 @@ int wx_setup_isb_resources(struct wx *wx)
{
struct pci_dev *pdev = wx->pdev;
+ if (wx->isb_mem)
+ return 0;
+
wx->isb_mem = dma_alloc_coherent(&pdev->dev,
sizeof(u32) * 4,
&wx->isb_dma,
@@ -2387,7 +2390,6 @@ static void wx_free_all_tx_resources(struct wx *wx)
void wx_free_resources(struct wx *wx)
{
- wx_free_isb_resources(wx);
wx_free_all_rx_resources(wx);
wx_free_all_tx_resources(wx);
}
diff --git a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
index e894e01d030d1..af30ca0312b81 100644
--- a/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
+++ b/drivers/net/ethernet/wangxun/ngbe/ngbe_main.c
@@ -387,6 +387,7 @@ static int ngbe_open(struct net_device *netdev)
err_free_irq:
wx_free_irq(wx);
err_free_resources:
+ wx_free_isb_resources(wx);
wx_free_resources(wx);
return err;
}
@@ -408,6 +409,7 @@ static int ngbe_close(struct net_device *netdev)
ngbe_down(wx);
wx_free_irq(wx);
+ wx_free_isb_resources(wx);
wx_free_resources(wx);
phylink_disconnect_phy(wx->phylink);
wx_control_hw(wx, false);
diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
index 76b5672c0a177..ca74d9422065a 100644
--- a/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
+++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_main.c
@@ -296,7 +296,7 @@ static int txgbe_open(struct net_device *netdev)
err = txgbe_request_queue_irqs(wx);
if (err)
- goto err_free_isb;
+ goto err_free_resources;
/* Notify the stack of the actual queue counts. */
err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
@@ -313,8 +313,8 @@ static int txgbe_open(struct net_device *netdev)
err_free_irq:
wx_free_irq(wx);
-err_free_isb:
- wx_free_isb_resources(wx);
+err_free_resources:
+ wx_free_resources(wx);
err_reset:
txgbe_reset(wx);
@@ -729,6 +729,7 @@ static void txgbe_remove(struct pci_dev *pdev)
txgbe_remove_phy(txgbe);
txgbe_free_misc_irq(txgbe);
+ wx_free_isb_resources(wx);
pci_release_selected_regions(pdev,
pci_select_bars(pdev, IORESOURCE_MEM));
--
2.43.0
