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authorJean-Philippe Brucker <jean-philippe@linaro.org>2021-05-26 19:19:27 +0300
committerWill Deacon <will@kernel.org>2021-06-08 14:35:55 +0300
commit6522b1e0c78fc6947b58178446ca851690374f0d (patch)
tree9436b5ac843a1c31c572b81b37de6fd987072ae4 /drivers/acpi/arm64
parented1d08b9d0c9baed54a74073eae6c28d1e5422e8 (diff)
downloadlinux-6522b1e0c78fc6947b58178446ca851690374f0d.tar.xz
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: Hanjun Guo <guohanjun@huawei.com> Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Signed-off-by: Jean-Philippe Brucker <jean-philippe@linaro.org> Link: https://lore.kernel.org/r/20210526161927.24268-3-jean-philippe@linaro.org Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/acpi/arm64')
-rw-r--r--drivers/acpi/arm64/iort.c4
1 files changed, 3 insertions, 1 deletions
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");