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-rw-r--r--drivers/coresight/coresight-etm3x.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/coresight/coresight-etm3x.c b/drivers/coresight/coresight-etm3x.c
index 369cac00afaa..73c36696f1b6 100644
--- a/drivers/coresight/coresight-etm3x.c
+++ b/drivers/coresight/coresight-etm3x.c
@@ -1749,7 +1749,11 @@ static void etm_init_arch_data(void *info)
static void etm_init_default_data(struct etm_drvdata *drvdata)
{
- static int etm3x_traceid;
+ /*
+ * A trace ID of value 0 is invalid, so let's start at some
+ * random value that fits in 7 bits and will be just as good.
+ */
+ static int etm3x_traceid = 0x10;
u32 flags = (1 << 0 | /* instruction execute*/
3 << 3 | /* ARM instruction */