sfc: introduce shutdown entry point in efx pci driver
authorPieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
Tue, 6 Sep 2022 10:56:20 +0000 (11:56 +0100)
committerPaolo Abeni <pabeni@redhat.com>
Tue, 13 Sep 2022 07:45:11 +0000 (09:45 +0200)
Make the device inactive when the system shutdown callback has been
invoked. This is achieved by freezing the driver and disabling the
PCI bus mastering.

Co-developed-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com>
Acked-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://lore.kernel.org/r/20220906105620.26179-1-pieter.jansen-van-vuuren@amd.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
drivers/net/ethernet/sfc/efx.c
drivers/net/ethernet/sfc/siena/efx.c

index abed618..054d5ce 100644 (file)
@@ -1175,6 +1175,17 @@ static int efx_pm_freeze(struct device *dev)
        return 0;
 }
 
+static void efx_pci_shutdown(struct pci_dev *pci_dev)
+{
+       struct efx_nic *efx = pci_get_drvdata(pci_dev);
+
+       if (!efx)
+               return;
+
+       efx_pm_freeze(&pci_dev->dev);
+       pci_disable_device(pci_dev);
+}
+
 static int efx_pm_thaw(struct device *dev)
 {
        int rc;
@@ -1279,6 +1290,7 @@ static struct pci_driver efx_pci_driver = {
        .probe          = efx_pci_probe,
        .remove         = efx_pci_remove,
        .driver.pm      = &efx_pm_ops,
+       .shutdown       = efx_pci_shutdown,
        .err_handler    = &efx_err_handlers,
 #ifdef CONFIG_SFC_SRIOV
        .sriov_configure = efx_pci_sriov_configure,
index 10734e8..60e5b7c 100644 (file)
@@ -1148,6 +1148,17 @@ static int efx_pm_freeze(struct device *dev)
        return 0;
 }
 
+static void efx_pci_shutdown(struct pci_dev *pci_dev)
+{
+       struct efx_nic *efx = pci_get_drvdata(pci_dev);
+
+       if (!efx)
+               return;
+
+       efx_pm_freeze(&pci_dev->dev);
+       pci_disable_device(pci_dev);
+}
+
 static int efx_pm_thaw(struct device *dev)
 {
        int rc;
@@ -1252,6 +1263,7 @@ static struct pci_driver efx_pci_driver = {
        .probe          = efx_pci_probe,
        .remove         = efx_pci_remove,
        .driver.pm      = &efx_pm_ops,
+       .shutdown       = efx_pci_shutdown,
        .err_handler    = &efx_siena_err_handlers,
 #ifdef CONFIG_SFC_SIENA_SRIOV
        .sriov_configure = efx_pci_sriov_configure,