6.5-stable review patch. If anyone has any objections, please let me know. ------------------ From: Suzuki K Poulose <suzuki.poulose@xxxxxxx> [ Upstream commit 3a2888aa1f962c55ca36119aebe67355c7bf54e4 ] 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: Suzuki K Poulose <suzuki.poulose@xxxxxxx> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx> Link: https://lore.kernel.org/r/20230710062500.45147-6-anshuman.khandual@xxxxxxx Stable-dep-of: 1a9e02673e25 ("coresight: Fix memory leak in acpi_buffer->pointer") Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/hwtracing/coresight/coresight-platform.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c index 3e2e135cb8f6d..c8940314cceb8 100644 --- a/drivers/hwtracing/coresight/coresight-platform.c +++ b/drivers/hwtracing/coresight/coresight-platform.c @@ -669,8 +669,12 @@ 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) -- 2.40.1
