Fix parsing of SR_IRQ resource descriptors.

ok patrick@, anton@

diff --git a/sys/dev/acpi/acpi.c b/sys/dev/acpi/acpi.c
index 7577424..1bf5eb1 100644 (file)
--- a/sys/dev/acpi/acpi.c
+++ b/sys/dev/acpi/acpi.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: acpi.c,v 1.401 2021/11/02 02:17:56 deraadt Exp $ */
+/* $OpenBSD: acpi.c,v 1.402 2021/12/07 10:15:25 kettenis Exp $ */
 /*
  * Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com>
  * Copyright (c) 2005 Jordan Hargrave <jordan@openbsd.org>
@@ -3272,7 +3272,7 @@ acpi_parse_resources(int crsidx, union acpi_resource *crs, void *arg)
        case SR_IRQ:
                aaa->aaa_irq[aaa->aaa_nirq] = ffs(crs->sr_irq.irq_mask) - 1;
                /* Default is exclusive, active-high, edge triggered. */
-               if (AML_CRSLEN(crs) < 3)
+               if (AML_CRSLEN(crs) < 4)
                        flags = SR_IRQ_MODE;
                else
                        flags = crs->sr_irq.irq_flags;