diff options
author | Timur Tabi <timur@codeaurora.org> | 2017-06-23 14:33:30 -0500 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2017-06-25 11:44:29 -0400 |
commit | ceef551faacb1783040d9c1a10d4baad9548f37e (patch) | |
tree | 1de153f6062c004708bf19996da82b8b40e278a1 /drivers/net/ethernet/qualcomm | |
parent | 867ae6abc24967188db0914de170512e36592eb3 (diff) |
net: qcom/emac: add support for emulation systems
On emulation systems, the EMAC's internal PHY ("SGMII") is not present,
but is not needed for network functionality. So just display a warning
message and ignore the SGMII.
Tested-by: Philip Elcan <pelcan@codeaurora.org>
Tested-by: Adam Wallis <awallis@codeaurora.org>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/qualcomm')
-rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac-sgmii.c | 23 |
1 files changed, 21 insertions, 2 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c index 18c184ee1f3c..29ba37a08372 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c +++ b/drivers/net/ethernet/qualcomm/emac/emac-sgmii.c @@ -297,6 +297,14 @@ static const struct of_device_id emac_sgmii_dt_match[] = { {} }; +/* Dummy function for systems without an internal PHY. This avoids having + * to check for NULL pointers before calling the functions. + */ +static int emac_sgmii_dummy(struct emac_adapter *adpt) +{ + return 0; +} + int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) { struct platform_device *sgmii_pdev = NULL; @@ -311,8 +319,19 @@ int emac_sgmii_config(struct platform_device *pdev, struct emac_adapter *adpt) emac_sgmii_acpi_match); if (!dev) { - dev_err(&pdev->dev, "cannot find internal phy node\n"); - return -ENODEV; + dev_warn(&pdev->dev, "cannot find internal phy node\n"); + /* There is typically no internal PHY on emulation + * systems, so if we can't find the node, assume + * we are on an emulation system and stub-out + * support for the internal PHY. These systems only + * use ACPI. + */ + phy->open = emac_sgmii_dummy; + phy->close = emac_sgmii_dummy; + phy->link_up = emac_sgmii_dummy; + phy->link_down = emac_sgmii_dummy; + + return 0; } sgmii_pdev = to_platform_device(dev); |