The shutdown function halts all DMA and interrupts, so that all
operations are discontinued when the system shuts down, e.g. via
kexec or a forced reboot.
Tested-by: Tyler Baicar <tbai...@codeaurora.org>
Signed-off-by: Timur Tabi <ti...@codeaurora.org>
---
drivers/net/ethernet/qualcomm/emac/emac.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c
b/drivers/net/ethernet/qualcomm/emac/emac.c
index 98a326f..77c5c92 100644
--- a/drivers/net/ethernet/qualcomm/emac/emac.c
+++ b/drivers/net/ethernet/qualcomm/emac/emac.c
@@ -762,6 +762,19 @@ static int emac_remove(struct platform_device *pdev)
return 0;
}
+static void emac_shutdown(struct platform_device *pdev)
+{
+ struct net_device *netdev = dev_get_drvdata(&pdev->dev);
+ struct emac_adapter *adpt = netdev_priv(netdev);
+ struct emac_sgmii *sgmii = &adpt->phy;
+
+ /* Closing the SGMII turns off its interrupts */
+ sgmii->close(adpt);
+
+ /* Resetting the MAC turns off all DMA and its interrupts */
+ emac_mac_reset(adpt);
+}
+
static struct platform_driver emac_platform_driver = {
.probe = emac_probe,
.remove = emac_remove,
@@ -770,6 +783,7 @@ static int emac_remove(struct platform_device *pdev)
.of_match_table = emac_dt_match,
.acpi_match_table = ACPI_PTR(emac_acpi_match),
},
+ .shutdown = emac_shutdown,
};
module_platform_driver(emac_platform_driver);
--
Qualcomm Datacenter Technologies, Inc. as an affiliate of Qualcomm
Technologies, Inc. Qualcomm Technologies, Inc. is a member of the
Code Aurora Forum, a Linux Foundation Collaborative Project.
