diff options
Diffstat (limited to 'drivers/acpi/glue.c')
| -rw-r--r-- | drivers/acpi/glue.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 5ea5dc219f56..fb19e1cdb641 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -98,7 +98,15 @@ static int find_child_checks(struct acpi_device *adev, bool check_children) if (check_children && list_empty(&adev->children)) return -ENODEV; - return sta_present ? FIND_CHILD_MAX_SCORE : FIND_CHILD_MIN_SCORE; + /* + * If the device has a _HID (or _CID) returning a valid ACPI/PNP + * device ID, it is better to make it look less attractive here, so that + * the other device with the same _ADR value (that may not have a valid + * device ID) can be matched going forward. [This means a second spec + * violation in a row, so whatever we do here is best effort anyway.] + */ + return sta_present && list_empty(&adev->pnp.ids) ? + FIND_CHILD_MAX_SCORE : FIND_CHILD_MIN_SCORE; } struct acpi_device *acpi_find_child_device(struct acpi_device *parent, @@ -227,8 +235,7 @@ int acpi_bind_one(struct device *dev, struct acpi_device *acpi_dev) attr = acpi_get_dma_attr(acpi_dev); if (attr != DEV_DMA_NOT_SUPPORTED) - arch_setup_dma_ops(dev, 0, 0, NULL, - attr == DEV_DMA_COHERENT); + acpi_dma_configure(dev, attr); acpi_physnode_link_name(physical_node_name, node_id); retval = sysfs_create_link(&acpi_dev->dev.kobj, &dev->kobj, |