From b50c788a56964a900ebcc817c8a5ad35ddad87b6 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Tue, 28 Mar 2023 15:15:59 -0500 Subject: of/address: Add of_range_count() helper Some users need a count of the number of ranges entries before iterating over the entries. Typically this is for allocating some data structure based on the size. Add a helper, of_range_count(), to get the count. The helper must be called with an struct of_range_parser initialized by of_range_parser_init(). Link: https://lore.kernel.org/r/20230328-dt-address-helpers-v1-4-e2456c3e77ab@kernel.org Signed-off-by: Rob Herring --- drivers/of/unittest.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) (limited to 'drivers/of') diff --git a/drivers/of/unittest.c b/drivers/of/unittest.c index 29066ecbed47..eaeb58065acc 100644 --- a/drivers/of/unittest.c +++ b/drivers/of/unittest.c @@ -1014,7 +1014,7 @@ static void __init of_unittest_bus_ranges(void) struct of_range range; struct of_range_parser parser; struct resource res; - int ret, i = 0; + int ret, count, i = 0; np = of_find_node_by_path("/testcase-data/address-tests"); if (!np) { @@ -1040,6 +1040,11 @@ static void __init of_unittest_bus_ranges(void) "of_range_to_resource wrong resource start address on node %pOF res=%pR\n", np, &res); + count = of_range_count(&parser); + unittest(count == 2, + "of_range_count wrong size on node %pOF count=%d\n", + np, count); + /* * Get the "ranges" from the device tree */ -- cgit v1.2.3