git: 7941d1863f0f - stable/15 - acpi: On /dev/power suspend, trigger userspace notifications

The branch stable/15 has been updated by olce:

URL: https://cgit.FreeBSD.org/src/commit/?id=7941d1863f0f6a394adc758af0836592f831a655

commit 7941d1863f0f6a394adc758af0836592f831a655
Author:     Olivier Certner <olce@FreeBSD.org>
AuthorDate: 2026-05-25 16:01:10 +0000
Commit:     Olivier Certner <olce@FreeBSD.org>
CommitDate: 2026-06-09 20:25:46 +0000

    acpi: On /dev/power suspend, trigger userspace notifications
    
    On a suspend request via ioctl(), /dev/acpi (and compatible /dev/apm)
    both call acpi_ReqSleepState() instead of directly calling
    acpi_EnterSleepState().  The former does more checks, returns success if
    the machine is already suspending, and notifies user space (via devd(8))
    about the impending suspend.  In other words, it seems to have been
    designed for user consumption more than the latter function.
    
    So, use acpi_ReqSleepState() in place of acpi_EnterSleepState() in
    acpi_pm_func(), which is ultimately called by power_pm_suspend(), itself
    called by power_ioctl().  Other callers of power_pm_suspend() (such as
    the console drivers) are also user-facing facilities, so should also
    benefit from this change.
    
    Reviewed by:    mhorne, imp
    Tested by:      mhorne
    MFC after:      2 weeks
    Sponsored by:   The FreeBSD Foundation
    Differential Revision:  https://reviews.freebsd.org/D57239
    
    (cherry picked from commit 44eb2883134e465c28468213f79567c64fe26de1)
---
 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 3951d817f0e3..0d3f1abeebe6 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -4742,7 +4742,7 @@ acpi_pm_func(u_long cmd, void *arg, ...)
 			goto out;
 		}
 
-		if (ACPI_FAILURE(acpi_EnterSleepState(sc, acpi_state)))
+		if (ACPI_FAILURE(acpi_ReqSleepState(sc, acpi_state)))
 			error = ENXIO;
 		break;
 	default: