From: Anshuman Khandual <anshuman.khandual@arm.com>
To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org
Cc: mathieu.poirier@linaro.org,
Anshuman Khandual <anshuman.khandual@arm.com>,
suzuki.poulose@arm.com, linux-kernel@vger.kernel.org,
Linu Cherian <lcherian@marvell.com>,
mike.leach@linaro.org
Subject: [PATCH V2 02/11] coresight: Do not scan for graph if none is present
Date: Wed, 13 Jan 2021 09:48:09 +0530 [thread overview]
Message-ID: <1610511498-4058-3-git-send-email-anshuman.khandual@arm.com> (raw)
In-Reply-To: <1610511498-4058-1-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.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
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:[~2021-01-13 4:20 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-13 4:18 [PATCH V2 00/11] arm64: coresight: Enable ETE and TRBE Anshuman Khandual
2021-01-13 4:18 ` [PATCH V2 01/11] coresight: etm-perf: Allow an event to use different sinks Anshuman Khandual
2021-01-13 4:18 ` Anshuman Khandual [this message]
2021-01-13 4:18 ` [PATCH V2 03/11] coresight: etm4x: Add support for PE OS lock Anshuman Khandual
2021-01-13 4:18 ` [PATCH V2 04/11] coresight: ete: Add support for ETE sysreg access Anshuman Khandual
2021-01-13 4:18 ` [PATCH V2 05/11] coresight: ete: Add support for ETE tracing Anshuman Khandual
2021-01-13 4:18 ` [PATCH V2 06/11] dts: bindings: Document device tree bindings for ETE Anshuman Khandual
2021-01-25 19:22 ` Rob Herring
2021-01-25 22:20 ` Suzuki K Poulose
2021-01-25 23:28 ` Suzuki K Poulose
2021-01-13 4:18 ` [PATCH V2 07/11] arm64: Add TRBE definitions Anshuman Khandual
2021-01-13 9:21 ` Suzuki K Poulose
2021-01-15 1:52 ` Anshuman Khandual
2021-02-22 13:55 ` Catalin Marinas
2021-02-22 13:59 ` Catalin Marinas
2021-01-13 4:18 ` [PATCH V2 08/11] coresight: core: Add support for dedicated percpu sinks Anshuman Khandual
2021-01-13 9:43 ` Suzuki K Poulose
2021-01-15 2:36 ` Anshuman Khandual
2021-01-15 12:31 ` Suzuki K Poulose
2021-01-13 4:18 ` [PATCH V2 09/11] coresight: etm-perf: Truncate the perf record if handle has no space Anshuman Khandual
2021-01-13 9:48 ` Suzuki K Poulose
2021-01-13 4:18 ` [PATCH V2 10/11] coresight: sink: Add TRBE driver Anshuman Khandual
2021-01-13 15:28 ` Suzuki K Poulose
2021-01-15 5:29 ` Anshuman Khandual
2021-01-15 12:43 ` Suzuki K Poulose
2021-01-17 12:10 ` Anshuman Khandual
2021-01-13 4:18 ` [PATCH V2 11/11] dts: bindings: Document device tree bindings for Arm TRBE Anshuman Khandual
2021-01-13 15:45 ` Rob Herring
2021-01-14 10:17 ` Suzuki K Poulose
2021-01-14 14:07 ` Rob Herring
2021-01-14 14:47 ` Suzuki K Poulose
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