linux-kernel - [PATCH 4.9 125/241] coresight: Fixes coresight DT parse to get correct output port ID.

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Message-Id: <20180319180756.380379105@linuxfoundation.org>
Date:   Mon, 19 Mar 2018 19:06:30 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Mike Leach <mike.leach@...aro.org>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.9 125/241] coresight: Fixes coresight DT parse to get correct output port ID.

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Leach <mike.leach@...aro.org>


[ Upstream commit eeedc5421dd3b51de73e6106405c5c77f920f281 ]

Corrected to get the port numbering to allow programmable replicator driver
to operate correctly.

By convention, CoreSight devices number ports, not endpoints in
the .dts files:-

port {
     reg<N>
     endpoint {
     }
}

Existing code read endpoint number - always 0x0, rather than the correct
port number.

Signed-off-by: Mike Leach <mike.leach@...aro.org>
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/hwtracing/coresight/of_coresight.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/hwtracing/coresight/of_coresight.c
+++ b/drivers/hwtracing/coresight/of_coresight.c
@@ -149,7 +149,7 @@ struct coresight_platform_data *of_get_c
 				continue;
 
 			/* The local out port number */
-			pdata->outports[i] = endpoint.id;
+			pdata->outports[i] = endpoint.port;
 
 			/*
 			 * Get a handle on the remote port and parent