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authorOlivier Certner <olce@FreeBSD.org>2026-01-09 09:53:39 +0000
committerOlivier Certner <olce@FreeBSD.org>2026-02-03 17:19:08 +0000
commite401e6d3fc91679b16c5cfa4c473dcb8fcadacfa (patch)
tree02638769366c8fc9280c6bdf54979bca07cebfe7
parent7f031c9f6b9ff8af7c901ff2645124a93b9de284 (diff)
acpi: 'hw.acpi.s4bios' sysctl: Change type to bool, expand description
Another boolean, indicating hardware support, will be introduced in next commit. Thanks to the previous commit modifying sysctl_handle_bool(), this change is backwards-compatible with old programs using an integer in and out of sysctl(3). Reviewed by: obiwac MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D54626
-rw-r--r--sys/dev/acpica/acpi.c6
-rw-r--r--sys/dev/acpica/acpivar.h2
2 files changed, 4 insertions, 4 deletions
diff --git a/sys/dev/acpica/acpi.c b/sys/dev/acpica/acpi.c
index 47bb47bfb0af..58ddb0a83922 100644
--- a/sys/dev/acpica/acpi.c
+++ b/sys/dev/acpica/acpi.c
@@ -626,7 +626,7 @@ acpi_attach(device_t dev)
/* Only enable S4BIOS by default if the FACS says it is available. */
if (AcpiGbl_FACS != NULL && AcpiGbl_FACS->Flags & ACPI_FACS_S4_BIOS_PRESENT)
- sc->acpi_s4bios = 1;
+ sc->acpi_s4bios = true;
/*
* Probe all supported ACPI sleep states. Awake (S0) is always supported,
@@ -754,9 +754,9 @@ acpi_attach(device_t dev)
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "sleep_delay", CTLFLAG_RW, &sc->acpi_sleep_delay, 0,
"sleep delay in seconds");
- SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ SYSCTL_ADD_BOOL(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "s4bios", CTLFLAG_RW, &sc->acpi_s4bios, 0,
- "Use S4BIOS when hibernating.");
+ "On hibernate, have the firmware save/restore the machine state (S4BIOS).");
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
OID_AUTO, "verbose", CTLFLAG_RW, &sc->acpi_verbose, 0, "verbose mode");
SYSCTL_ADD_INT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
diff --git a/sys/dev/acpica/acpivar.h b/sys/dev/acpica/acpivar.h
index eea54178060f..51881c580d4b 100644
--- a/sys/dev/acpica/acpivar.h
+++ b/sys/dev/acpica/acpivar.h
@@ -64,7 +64,7 @@ struct acpi_softc {
enum power_stype acpi_lid_switch_stype;
int acpi_standby_sx;
- int acpi_s4bios;
+ bool acpi_s4bios;
int acpi_sleep_delay;
int acpi_do_disable;