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authorAlexander Shishkin <alexander.shishkin@linux.intel.com>2018-03-01 10:17:25 +0200
committerAlexander Shishkin <alexander.shishkin@linux.intel.com>2018-03-28 18:47:20 +0300
commitc2d2c7de972d7a08533bde622c36ff6feb112907 (patch)
tree0d5254091622b79a8cf1a99dc19d19ba2113ff36 /drivers/hwtracing
parent9ad577087165478c9d9be82b15ed9bf2db5835f5 (diff)
downloadlinux-c2d2c7de972d7a08533bde622c36ff6feb112907.tar.bz2
intel_th: Don't touch switch routing in host mode
When the Trace Hub is operating in Host Debugger mode, it is up to the debugger to configure master routing even for the software sources. Do not do this in the driver in this case. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Diffstat (limited to 'drivers/hwtracing')
-rw-r--r--drivers/hwtracing/intel_th/core.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hwtracing/intel_th/core.c b/drivers/hwtracing/intel_th/core.c
index 8e4f5fd8a43e..d295b221e0bc 100644
--- a/drivers/hwtracing/intel_th/core.c
+++ b/drivers/hwtracing/intel_th/core.c
@@ -930,6 +930,10 @@ int intel_th_set_output(struct intel_th_device *thdev,
struct intel_th_device *hub = to_intel_th_hub(thdev);
struct intel_th_driver *hubdrv = to_intel_th_driver(hub->dev.driver);
+ /* In host mode, this is up to the external debugger, do nothing. */
+ if (hub->host_mode)
+ return 0;
+
if (!hubdrv->set_output)
return -ENOTSUPP;