From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org
Cc: mike.leach@linaro.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
linux-kernel@vger.kernel.org, mathieu.poirier@linaro.org,
suzuki.poulose@arm.com
Subject: [RFC 03/11] coresight: Do not scan for graph if none is present
Date: Tue, 10 Nov 2020 18:15:01 +0530 [thread overview]
Message-ID: <1605012309-24812-4-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1605012309-24812-1-git-send-email-anshuman.khandual@arm.com>
From: Suzuki K Poulose <suzuki.poulose@arm.com>
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.
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
---
drivers/hwtracing/coresight/coresight-platform.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 3629b78..c594f45 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -90,6 +90,12 @@ static void of_coresight_get_ports_legacy(const struct device_node *node,
struct of_endpoint endpoint;
int in = 0, out = 0;
+ /*
+ * Avoid warnings in of_graph_get_next_endpoint()
+ * if the device doesn't have any graph connections
+ */
+ if (!of_graph_is_present(node))
+ return;
do {
ep = of_graph_get_next_endpoint(node, ep);
if (!ep)
--
2.7.4
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next prev parent reply other threads:[~2020-11-10 12:46 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-10 12:44 [RFC 00/11] arm64: coresight: Enable ETE and TRBE Anshuman Khandual
2020-11-10 12:44 ` [RFC 01/11] arm64: Add TRBE definitions Anshuman Khandual
2020-11-10 12:45 ` [RFC 02/11] coresight: etm-perf: Allow an event to use different sinks Anshuman Khandual
2020-11-12 9:21 ` Suzuki K Poulose
2020-11-12 10:37 ` Linu Cherian
2020-11-12 11:09 ` Suzuki K Poulose
2020-11-10 12:45 ` Anshuman Khandual [this message]
2020-11-10 12:45 ` [RFC 04/11] coresight: etm4x: Add support for PE OS lock Anshuman Khandual
2020-11-10 12:45 ` [RFC 05/11] coresight: ete: Add support for sysreg support Anshuman Khandual
2020-11-10 12:45 ` [RFC 06/11] coresight: ete: Detect ETE as one of the supported ETMs Anshuman Khandual
2020-11-14 5:36 ` Tingwei Zhang
2020-11-23 9:56 ` Suzuki K Poulose
2020-11-10 12:45 ` [RFC 07/11] coresight: sink: Add TRBE driver Anshuman Khandual
2020-11-12 10:13 ` Suzuki K Poulose
2020-11-25 5:25 ` Anshuman Khandual
2020-11-14 5:38 ` Tingwei Zhang
2020-11-23 3:51 ` Anshuman Khandual
2020-11-10 12:45 ` [RFC 08/11] coresight: etm-perf: Truncate the perf record if handle has no space Anshuman Khandual
2020-11-10 12:45 ` [RFC 09/11] coresight: etm-perf: Disable the path before capturing the trace data Anshuman Khandual
2020-11-12 9:27 ` Suzuki K Poulose
2020-11-23 6:08 ` Anshuman Khandual
2020-11-23 10:01 ` Suzuki K Poulose
2020-11-27 10:32 ` Suzuki K Poulose
2020-12-11 20:31 ` Mathieu Poirier
2020-12-14 10:00 ` Suzuki K Poulose
2020-11-10 12:45 ` [RFC 10/11] coresgith: etm-perf: Connect TRBE sink with ETE source Anshuman Khandual
2020-11-12 9:31 ` Suzuki K Poulose
2020-11-23 5:37 ` Anshuman Khandual
2020-12-11 21:31 ` Mathieu Poirier
2020-11-10 12:45 ` [RFC 11/11] dts: bindings: Document device tree binding for Arm TRBE Anshuman Khandual
2020-11-10 18:25 ` [RFC 00/11] arm64: coresight: Enable ETE and TRBE Mathieu Poirier
2020-11-14 5:17 ` Tingwei Zhang
2020-11-16 15:00 ` Mike Leach
2020-11-23 3:40 ` Anshuman Khandual
2020-11-23 12:30 ` Mike Leach
2020-11-23 2:43 ` Anshuman Khandual
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