linux-stable/drivers/hwtracing
Suzuki K Poulose d7592a5c37 coresight: Do not scan for graph if none is present
[ Upstream commit 2b921b671a ]

If a graph node is not found for a given node, of_get_next_endpoint()
will emit the following error message :

 OF: graph: no port node found in /<node_name>

If the given component doesn't have any explicit connections (e.g,
ETE) we could simply ignore the graph parsing. As for any legacy
component where this is mandatory, the device will not be usable
as before this patch. Updating the DT bindings to Yaml and enabling
the schema checks can detect such issues with the DT.

Cc: Mike Leach <mike.leach@linaro.org>
Cc: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20210405164307.1720226-11-suzuki.poulose@arm.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-05-19 10:12:55 +02:00
..
coresight coresight: Do not scan for graph if none is present 2021-05-19 10:12:55 +02:00
intel_th intel_th: pci: Add Alder Lake-M support 2021-05-11 14:47:35 +02:00
stm stm class: Fix module init return on allocation failure 2021-01-27 11:55:15 +01:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00