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Commit 03eb3eb4 authored by Timur Tabi's avatar Timur Tabi Committed by David S. Miller
Browse files

net: qcom/emac: add shutdown function 



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: default avatarTyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: default avatarTimur Tabi <timur@codeaurora.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e3c42b61

drivers/net/ethernet/qualcomm/emac/emac.c

+14 −0
Original line number Diff line number Diff line
@@ -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 struct platform_driver emac_platform_driver = { 
		.of_match_table = emac_dt_match,

		.acpi_match_table = ACPI_PTR(emac_acpi_match),

	},

	.shutdown = emac_shutdown,

};



module_platform_driver(emac_platform_driver);