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authorDaniel Vetter <daniel.vetter@ffwll.ch>2017-10-03 11:09:16 +0200
committerDaniel Vetter <daniel.vetter@ffwll.ch>2017-10-03 11:09:16 +0200
commit0d3c24e936feefeca854073ccb40613cd6eba9a9 (patch)
tree1f675397b924846740b0931b066ddce6f3d7eb3d /drivers/hwtracing/coresight/coresight.c
parent1af0838de60e723cb02253ecc9b555c30f8f6a6f (diff)
parentebec44a2456fbe5fe18aae88f6010f6878f0cb4a (diff)
downloadtalos-op-linux-0d3c24e936feefeca854073ccb40613cd6eba9a9.tar.gz
talos-op-linux-0d3c24e936feefeca854073ccb40613cd6eba9a9.zip
Merge airlied/drm-next into drm-misc-next
Just catching up with upstream. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight.c')
-rw-r--r--drivers/hwtracing/coresight/coresight.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/hwtracing/coresight/coresight.c b/drivers/hwtracing/coresight/coresight.c
index 6a0202b7384f..b8091bef21dc 100644
--- a/drivers/hwtracing/coresight/coresight.c
+++ b/drivers/hwtracing/coresight/coresight.c
@@ -53,6 +53,14 @@ static DEFINE_PER_CPU(struct list_head *, tracer_path);
*/
static struct list_head *stm_path;
+/*
+ * When losing synchronisation a new barrier packet needs to be inserted at the
+ * beginning of the data collected in a buffer. That way the decoder knows that
+ * it needs to look for another sync sequence.
+ */
+const u32 barrier_pkt[5] = {0x7fffffff, 0x7fffffff,
+ 0x7fffffff, 0x7fffffff, 0x0};
+
static int coresight_id_match(struct device *dev, void *data)
{
int trace_id, i_trace_id;
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