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| author | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-02-23 11:16:39 +0300 |
| commit | 585a78c1f77be305b1f6adad392f16047fb66ffd (patch) | |
| tree | 765143b487d582832c7695c9fbcae141c35baa4c /drivers/acpi/glue.c | |
| parent | 37064583f63eca93c98a9cdf2360485ea05f617a (diff) | |
| parent | 69308402ca6f5b80a5a090ade0b13bd146891420 (diff) | |
| download | linux-585a78c1f77be305b1f6adad392f16047fb66ffd.tar.xz | |
Merge branch 'linus' into objtool/core, to pick up Xen dependencies
Pick up dependencies - freshly merged upstream via xen-next - before applying
dependent objtool changes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/acpi/glue.c')
| -rw-r--r-- | drivers/acpi/glue.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index 204fe94c7e45..a194f30876c5 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -75,7 +75,8 @@ static struct acpi_bus_type *acpi_get_bus_type(struct device *dev) } #define FIND_CHILD_MIN_SCORE 1 -#define FIND_CHILD_MAX_SCORE 2 +#define FIND_CHILD_MID_SCORE 2 +#define FIND_CHILD_MAX_SCORE 3 static int match_any(struct acpi_device *adev, void *not_used) { @@ -96,8 +97,17 @@ static int find_child_checks(struct acpi_device *adev, bool check_children) return -ENODEV; status = acpi_evaluate_integer(adev->handle, "_STA", NULL, &sta); - if (status == AE_NOT_FOUND) + if (status == AE_NOT_FOUND) { + /* + * Special case: backlight device objects without _STA are + * preferred to other objects with the same _ADR value, because + * it is more likely that they are actually useful. + */ + if (adev->pnp.type.backlight) + return FIND_CHILD_MID_SCORE; + return FIND_CHILD_MIN_SCORE; + } if (ACPI_FAILURE(status) || !(sta & ACPI_STA_DEVICE_ENABLED)) return -ENODEV; |