From: Mathieu Poirier <[email protected]> The coresight TRM specify that a component's trace ID should be other than 0.
Signed-off-by: Mathieu Poirier <[email protected]> --- drivers/coresight/coresight-etm3x.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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 */ -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
