Commit 6522b1e0 authored by Jean-Philippe Brucker's avatar Jean-Philippe Brucker Committed by Will Deacon
Browse files

ACPI/IORT: Enable stall support for platform devices 



Copy the "Stall supported" bit, that tells whether a named component
supports stall, into the dma-can-stall device property.

Acked-by: default avatarHanjun Guo <guohanjun@huawei.com>
Acked-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
Acked-by: default avatarLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: default avatarJean-Philippe Brucker <jean-philippe@linaro.org>
Link: https://lore.kernel.org/r/20210526161927.24268-3-jean-philippe@linaro.org


Signed-off-by: default avatarWill Deacon <will@kernel.org>
parent ed1d08b9

drivers/acpi/arm64/iort.c

+3 −1
Original line number Diff line number Diff line
@@ -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");