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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-08-24 18:59:48 +0200
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2022-08-24 20:55:24 +0200
commit62fcb99bdf10fed34b4fe6e225489fe4be2d0536 (patch)
tree21c1d879b4b903631d3c415bb53c08579f11fe97 /drivers/thunderbolt/acpi.c
parent6e1850b2f3747942d3813a2fde82f1e46aa593d1 (diff)
downloadlinux-62fcb99bdf10fed34b4fe6e225489fe4be2d0536.tar.bz2
ACPI: Drop parent field from struct acpi_device
The parent field in struct acpi_device is, in fact, redundant, because the dev.parent field in it effectively points to the same object and it is used by the driver core. Accordingly, the parent field can be dropped from struct acpi_device and for this purpose define acpi_dev_parent() to retrieve a parent struct acpi_device pointer from the dev.parent field in struct acpi_device. Next, update all of the users of the parent field in struct acpi_device to use acpi_dev_parent() instead of it and drop it. While at it, drop the ACPI_IS_ROOT_DEVICE() macro that is only used in one place in a confusing way. No intentional functional impact. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Acked-by: Mark Brown <broonie@kernel.org> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Acked-by: Wei Liu <wei.liu@kernel.org> Reviewed-by: Punit Agrawal <punit.agrawal@bytedance.com>
Diffstat (limited to 'drivers/thunderbolt/acpi.c')
-rw-r--r--drivers/thunderbolt/acpi.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/thunderbolt/acpi.c b/drivers/thunderbolt/acpi.c
index b1f0dc8df47c..7a8adf5ad5a0 100644
--- a/drivers/thunderbolt/acpi.c
+++ b/drivers/thunderbolt/acpi.c
@@ -42,7 +42,7 @@ static acpi_status tb_acpi_add_link(acpi_handle handle, u32 level, void *data,
*/
dev = acpi_get_first_physical_node(adev);
while (!dev) {
- adev = adev->parent;
+ adev = acpi_dev_parent(adev);
if (!adev)
break;
dev = acpi_get_first_physical_node(adev);