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authorLinus Torvalds <torvalds@linux-foundation.org>2017-04-07 20:01:45 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-04-07 20:01:45 +0300
commit7ab661856bd7b30ef9e3b516330df7b5a5ea0c2c (patch)
tree99d162fa46ce2b8ede986d8dab33c53fe680b838 /drivers
parent50bdd7a0c99afc78e8dd9403c10b947efc4af4f5 (diff)
parentdc752d54fd3a69c882d24133810edeb22dda2d0d (diff)
downloadlinux-7ab661856bd7b30ef9e3b516330df7b5a5ea0c2c.tar.xz
Merge tag 'acpi-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki: "This fixes a core device enumeration code change made in 4.10, in order to address a reported issue, that went too far. Specifics: - Refine the check for the existence of _HID in find_child_checks() so that it doesn't trigger for device objects with device IDs made up by the kernel (Rafael Wysocki)" * tag 'acpi-4.11-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPI / scan: Prefer devices without _HID for _ADR matching
Diffstat (limited to 'drivers')
-rw-r--r--drivers/acpi/glue.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c
index fb19e1cdb641..edc8663b5db3 100644
--- a/drivers/acpi/glue.c
+++ b/drivers/acpi/glue.c
@@ -99,13 +99,13 @@ static int find_child_checks(struct acpi_device *adev, bool check_children)
return -ENODEV;
/*
- * 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.]
+ * If the device has a _HID 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) ?
+ return sta_present && !adev->pnp.type.platform_id ?
FIND_CHILD_MAX_SCORE : FIND_CHILD_MIN_SCORE;
}