git: d19f2af2b7f9 - main - acpi: Don't attach a "wake" sysctl node to devices without the ACPI flags IVAR

The branch main has been updated by jhb:

URL: https://cgit.FreeBSD.org/src/commit/?id=d19f2af2b7f9c964622fd2eba7d077c6f221b652

commit d19f2af2b7f9c964622fd2eba7d077c6f221b652
Author:     John Baldwin <jhb@FreeBSD.org>
AuthorDate: 2026-03-05 19:07:09 +0000
Commit:     John Baldwin <jhb@FreeBSD.org>
CommitDate: 2026-03-05 19:07:09 +0000

    acpi: Don't attach a "wake" sysctl node to devices without the ACPI flags IVAR
    
    Not all bus drivers for ACPI-aware devices implement the ACPI flags
    IVAR used by the acpi_wake_set_sysctl handler.  In some cases this may
    be a feature as some new-bus devices share the same ACPI handle (e.g.
    a pcibX device and its child pciY device) which can lead to confusing
    results (e.g. setting the sysctl on pciY changes the behavior of the
    parent pcibX device, but the "wake" sysctl for pcibX won't reflect the
    new behavior, or reflect the device's state).
    
    Reviewed by:    obiwac, ngie, imp
    Differential Revision:  https://reviews.freebsd.org/D55562
---
 sys/dev/acpica/acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
index 3a664523c27e..01b584ec30aa 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -3951,7 +3951,7 @@ acpi_wake_sysctl_walk(device_t dev)
     for (i = 0; i < numdevs; i++) {
 	child = devlist[i];
 	acpi_wake_sysctl_walk(child);
-	if (!device_is_attached(child))
+	if (!device_is_attached(child) || !acpi_has_flags(child))
 	    continue;
 	status = AcpiEvaluateObject(acpi_get_handle(child), "_PRW", NULL, NULL);
 	if (ACPI_SUCCESS(status)) {