Re: [PATCH v14 09/10] ACPI/IORT: Enable stall support for platform devices

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On 2021/4/1 23:47, Jean-Philippe Brucker wrote:
Copy the "Stall supported" bit, that tells whether a named component
supports stall, into the dma-can-stall device property.

Acked-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
---
  drivers/acpi/arm64/iort.c | 4 +++-
  1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
index 3912a1f6058e..0828f70cb782 100644
--- a/drivers/acpi/arm64/iort.c
+++ b/drivers/acpi/arm64/iort.c
@@ -968,13 +968,15 @@ static int iort_pci_iommu_init(struct pci_dev *pdev, u16 alias, void *data)
  static void iort_named_component_init(struct device *dev,
  				      struct acpi_iort_node *node)
  {
-	struct property_entry props[2] = {};
+	struct property_entry props[3] = {};
  	struct acpi_iort_named_component *nc;
nc = (struct acpi_iort_named_component *)node->node_data;
  	props[0] = PROPERTY_ENTRY_U32("pasid-num-bits",
  				      FIELD_GET(ACPI_IORT_NC_PASID_BITS,
  						nc->node_flags));
+	if (nc->node_flags & ACPI_IORT_NC_STALL_SUPPORTED)
+		props[1] = PROPERTY_ENTRY_BOOL("dma-can-stall");
if (device_add_properties(dev, props))
  		dev_warn(dev, "Could not add device properties\n");

Acked-by: Hanjun Guo <guohanjun@xxxxxxxxxx>



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