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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>
zero-colors
Timur Tabi 2016-12-13 17:49:02 -06:00 committed by David S. Miller
parent b822ee6c5e
commit 026acd5f47
1 changed files with 9 additions and 0 deletions
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9
drivers/net/ethernet/qualcomm/emac/emac.c
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@ -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;