diff options
| author | Timur Tabi <timur@codeaurora.org> | 2016-12-13 17:49:02 -0600 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-12-17 10:22:14 -0500 |
| commit | 026acd5f47340382844f0af73516cf7ae6cdc876 (patch) | |
| tree | 46c61dae87af390d6365c31339d507c6650815cd | |
| parent | b822ee6c5e5ba1f695fc514a65849cdd87618bd3 (diff) | |
| download | linux-026acd5f47340382844f0af73516cf7ae6cdc876.tar.bz2 | |
net: qcom/emac: don't try to claim clocks on ACPI systems
On ACPI systems, clocks are not available to drivers directly. They are
handled exclusively by ACPI and/or firmware, so there is no clock driver.
Calls to clk_get() always fail, so we should not even attempt to claim
any clocks on ACPI systems.
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/qualcomm/emac/emac.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/emac/emac.c b/drivers/net/ethernet/qualcomm/emac/emac.c index ae32f855e31b..422289c232bc 100644 --- a/drivers/net/ethernet/qualcomm/emac/emac.c +++ b/drivers/net/ethernet/qualcomm/emac/emac.c @@ -460,6 +460,12 @@ static int emac_clks_phase1_init(struct platform_device *pdev, { int ret; + /* On ACPI platforms, clocks are controlled by firmware and/or + * ACPI, not by drivers. + */ + if (has_acpi_companion(&pdev->dev)) + return 0; + ret = emac_clks_get(pdev, adpt); if (ret) return ret; @@ -485,6 +491,9 @@ static int emac_clks_phase2_init(struct platform_device *pdev, { int ret; + if (has_acpi_companion(&pdev->dev)) + return 0; + ret = clk_set_rate(adpt->clk[EMAC_CLK_TX], 125000000); if (ret) return ret; |