From: Jean-Philippe Brucker Date: Wed, 26 May 2021 16:19:27 +0000 (+0200) Subject: ACPI/IORT: Enable stall support for platform devices X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6522b1e0c78fc6947b58178446ca851690374f0d;p=linux.git 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 Acked-by: Jonathan Cameron Acked-by: Lorenzo Pieralisi Signed-off-by: Jean-Philippe Brucker Link: https://lore.kernel.org/r/20210526161927.24268-3-jean-philippe@linaro.org Signed-off-by: Will Deacon --- diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 3912a1f6058e5..0828f70cb782f 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");