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-rw-r--r--sys/i386/acpica/acpi_machdep.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/i386/acpica/acpi_machdep.c b/sys/i386/acpica/acpi_machdep.c
index 09e095a..18ffdb4 100644
--- a/sys/i386/acpica/acpi_machdep.c
+++ b/sys/i386/acpica/acpi_machdep.c
@@ -31,6 +31,8 @@ __FBSDID("$FreeBSD$");
#include <sys/bus.h>
#include <sys/conf.h>
#include <sys/fcntl.h>
+#include <sys/kernel.h>
+#include <sys/sysctl.h>
#include <sys/uio.h>
#include "acpi.h"
@@ -59,6 +61,9 @@ static device_t acpi_dev;
#include <i386/bios/apm.h>
#endif
+u_int32_t acpi_no_reset_video = 0;
+TUNABLE_INT("hw.acpi.no_reset_video", &acpi_no_reset_video);
+
static struct apm_softc apm_softc;
static d_open_t apmopen;
@@ -327,6 +332,11 @@ acpi_machdep_init(device_t dev)
if (intr_model != ACPI_INTR_PIC)
acpi_SetIntrModel(intr_model);
+
+ SYSCTL_ADD_UINT(&sc->acpi_sysctl_ctx, SYSCTL_CHILDREN(sc->acpi_sysctl_tree),
+ OID_AUTO, "no_reset_video", CTLFLAG_RD | CTLFLAG_RW, &acpi_no_reset_video, 0,
+ "Disable calling the VESA reset BIOS vector on the resume path");
+
return (0);
}
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