devm_clk_get() fails on ACPI platforms when a NULL string is used. Create a "sclk" lookup to make sure codec and machine drivers can get the clock.
Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com --- drivers/clk/clk-hifiberry-dacpro.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+)
diff --git a/drivers/clk/clk-hifiberry-dacpro.c b/drivers/clk/clk-hifiberry-dacpro.c index d01a90fed51b..36210f52c624 100644 --- a/drivers/clk/clk-hifiberry-dacpro.c +++ b/drivers/clk/clk-hifiberry-dacpro.c @@ -24,10 +24,12 @@ * struct clk_hifiberry_hw - Common struct to the HiFiBerry DAC Pro * @hw: clk_hw for the common clk framework * @mode: 0 => CLK44EN, 1 => CLK48EN + * @sclk_lookup: handle for "sclk" */ struct clk_hifiberry_hw { struct clk_hw hw; u8 mode; + struct clk_lookup *sclk_lookup; };
#define to_hifiberry_clk(_hw) container_of(_hw, struct clk_hifiberry_hw, hw) @@ -121,15 +123,34 @@ static int clk_hifiberry_dacpro_probe(struct platform_device *pdev) ret = devm_clk_hw_register_clkdev(dev, &proclk->hw, init.name, NULL); #endif + if (ret) { + dev_err(dev, "Fail to add clock driver\n"); + return ret; + } + + proclk->sclk_lookup = clkdev_hw_create(&proclk->hw, "sclk", NULL); + if (!proclk->sclk_lookup) { +#ifndef CONFIG_ACPI + of_clk_del_provider(dev->of_node); +#endif + return -ENOMEM; + } + + platform_set_drvdata(pdev, proclk);
return ret; }
static int clk_hifiberry_dacpro_remove(struct platform_device *pdev) { + struct clk_hifiberry_hw *proclk = platform_get_drvdata(pdev); + + clkdev_drop(proclk->sclk_lookup); + #ifndef CONFIG_ACPI of_clk_del_provider(pdev->dev.of_node); #endif + return 0; }