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net: stmmac: Fix WoL for PCI-based setups 

[ Upstream commit b7d0f08e91 ]

WoL won't work in PCI-based setups because we are not saving the PCI EP
state before entering suspend state and not allowing D3 wake.

Fix this by using a wrapper around stmmac_{suspend/resume} which
correctly sets the PCI EP state.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Jose Abreu 2018-07-31 15:08:20 +01:00 committed by Greg Kroah-Hartman
parent 1828cb3d10
commit 83a46456c9
1 changed files with 38 additions and 2 deletions
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40
drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
View File

@ -257,7 +257,7 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
return -ENOMEM;
/* Enable pci device */
ret = pcim_enable_device(pdev);
ret = pci_enable_device(pdev);
if (ret) {
dev_err(&pdev->dev, "%s: ERROR: failed to enable device\n",
__func__);
@ -300,9 +300,45 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
static void stmmac_pci_remove(struct pci_dev *pdev)
{
stmmac_dvr_remove(&pdev->dev);
pci_disable_device(pdev);
}
static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_suspend, stmmac_resume);
static int stmmac_pci_suspend(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
int ret;
ret = stmmac_suspend(dev);
if (ret)
return ret;
ret = pci_save_state(pdev);
if (ret)
return ret;
pci_disable_device(pdev);
pci_wake_from_d3(pdev, true);
return 0;
}
static int stmmac_pci_resume(struct device *dev)
{
struct pci_dev *pdev = to_pci_dev(dev);
int ret;
pci_restore_state(pdev);
pci_set_power_state(pdev, PCI_D0);
ret = pci_enable_device(pdev);
if (ret)
return ret;
pci_set_master(pdev);
return stmmac_resume(dev);
}
static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
/* synthetic ID, no official vendor */
#define PCI_VENDOR_ID_STMMAC 0x700