Add a resource_disabled() helper function that returns true (non-zero) if

a specified resource has been disabled via a non-zero 'disabled' hint and
false otherwise.

2 files changed, 15 insertions, 0 deletions

diff --git a/sys/kern/subr_hints.c b/sys/kern/subr_hints.c
index 93a1391..0aeb553 100644
--- a/sys/kern/subr_hints.c
+++ b/sys/kern/subr_hints.c
@@ -365,3 +365,17 @@ resource_find_dev(int *anchor, const char *name, int *unit,
 	*anchor = newln;
 	return ret;
 }
+
+/*
+ * Check to see if a device is disabled via a disabled hint.
+ */
+int
+resource_disabled(const char *name, int unit)
+{
+	int error, value;
+
+	error = resource_int_value(name, unit, "disabled", &value);
+	if (error)
+	       return (0);
+	return (value);
+}
diff --git a/sys/sys/bus.h b/sys/sys/bus.h
index 4500591..9de2a4c 100644
--- a/sys/sys/bus.h
+++ b/sys/sys/bus.h
@@ -353,6 +353,7 @@ int	resource_long_value(const char *name, int unit, const char *resname,
 			    long *result);
 int	resource_string_value(const char *name, int unit, const char *resname,
 			      const char **result);
+int	resource_disabled(const char *name, int unit);
 int	resource_find_match(int *anchor, const char **name, int *unit,
 			    const char *resname, const char *value);
 int	resource_find_dev(int *anchor, const char *name, int *unit,