[ 05/10] [Suspend2] Get next module.

[Nigel Cunningham <nigel@suspend2.net>]

Given a current (possibly NULL) pointer to a module, find the next module
in the pipeline.

Signed-off-by: Nigel Cunningham <nigel@suspend2.net>

 kernel/power/modules.c |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/kernel/power/modules.c b/kernel/power/modules.c
index eee5678..a7c3c38 100644
--- a/kernel/power/modules.c
+++ b/kernel/power/modules.c
@@ -165,3 +165,23 @@ void suspend2_cleanup_modules(int finish
 		}
 	}
 }
+
+/*
+ * get_next_filter
+ *
+ * Get the next filter in the pipeline.
+ */
+struct suspend_module_ops *get_next_filter(struct suspend_module_ops *filter_sought)
+{
+	struct suspend_module_ops *last_filter = NULL, *this_filter = NULL;
+
+	list_for_each_entry(this_filter, &suspend_filters, ops.filter.filter_list) {
+		if (this_filter->disabled)
+			continue;
+		if ((last_filter == filter_sought) || (!filter_sought))
+			return this_filter;
+		last_filter = this_filter;
+	}
+
+	return active_writer;
+}

--
Nigel Cunningham		nigel at suspend2 dot net
-
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