Commit 3a2888aa authored by Suzuki K Poulose's avatar Suzuki K Poulose
Browse files

coresight: platform: acpi: Ignore the absence of graph 



Some components may not have graph connections for describing
the trace path. e.g., ETE, where it could directly use the per
CPU TRBE. Ignore the absence of graph connections

Signed-off-by: default avatarSuzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20230710062500.45147-6-anshuman.khandual@arm.com
parent 73d779a0

drivers/hwtracing/coresight/coresight-platform.c

+5 −1
Original line number Diff line number Diff line
@@ -667,8 +667,12 @@ static int acpi_coresight_parse_graph(struct device *dev, 
	struct coresight_connection *new_conn;



	graph = acpi_get_coresight_graph(adev);

	/*

	 * There are no graph connections, which is fine for some components.

	 * e.g., ETE

	 */

	if (!graph)

		return -ENOENT;

		return 0;



	nlinks = graph->package.elements[2].integer.value;

	if (!nlinks)