diff options
| author | Timur Tabi <timur@codeaurora.org> | 2017-06-23 14:33:28 -0500 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-25 11:44:29 -0400 |
| commit | 03eb3eb4d4d56414efbe05a5521b2fc4ce175cb7 (patch) | |
| tree | f897a6e714b60dba883537864fc1d68ad0831f19 /drivers/net | |
| parent | e3c42b61ff813921ba58cfc0019e3fd63f651190 (diff) | |
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: Tyler Baicar <tbaicar@codeaurora.org>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c index 98a326faea29..77c5c929f141 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 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); |