[PATCH 4.14 28/44] net: amd-xgbe: disable interrupts during pci removal

Greg Kroah-Hartman
2022-02-14T09:32:36Z

From: Raju Rangoju <Raju.Rangoju@amd.com>

[ Upstream commit 68c2d6af1f1e469544d6cbe9a601d96fb9c00e7f ]

Hardware interrupts are enabled during the pci probe, however,
they are not disabled during pci removal.

Disable all hardware interrupts during pci removal to avoid any
issues.

Fixes: e75377404726 ("amd-xgbe: Update PCI support to use new IRQ functions")
Suggested-by: Selwin Sebastian <Selwin.Sebastian@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/amd/xgbe/xgbe-pci.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
index 82d1f416ee2ac..569e6d3d066bf 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-pci.c
@@ -400,6 +400,9 @@ static void xgbe_pci_remove(struct pci_dev *pdev)

pci_free_irq_vectors(pdata->pcidev);

+ /* Disable all interrupts in the hardware */
+ XP_IOWRITE(pdata, XP_INT_EN, 0x0);
+
xgbe_free_pdata(pdata);
}

--
2.34.1