When device uses the fixed clock and has no private space of LTR, we have to
create main LPSS clock and register platform device. This is normally a case
for LPSS DMA controller.
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
drivers/acpi/acpi_lpss.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/acpi/acpi_lpss.c b/drivers/acpi/acpi_lpss.c
index b1c9542..4015929 100644
--- a/drivers/acpi/acpi_lpss.c
+++ b/drivers/acpi/acpi_lpss.c
@@ -95,6 +95,10 @@ static int register_device_clock(struct acpi_device *adev,
if (!lpss_clk_dev)
lpt_register_clock_device();
+ if (!dev_desc->prv_offset && dev_desc->clk_required)
+ /* There is no error when device uses fixed clock */
+ return 0;
+
if (!dev_desc->clk_parent || !pdata->mmio_base
|| pdata->mmio_size < dev_desc->prv_offset + LPSS_CLK_SIZE)
return -ENODATA;
--
1.8.2.rc0.22.gb3600c3
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