sw_end represents the last software master, sw_start is index of the first master, so the number of software masters should be sw_end - sw_start + 1.
Signed-off-by: Chunyan Zhang <[email protected]> --- drivers/hwtracing/intel_th/sth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/intel_th/sth.c b/drivers/hwtracing/intel_th/sth.c index 56101c3..28917d7 100644 --- a/drivers/hwtracing/intel_th/sth.c +++ b/drivers/hwtracing/intel_th/sth.c @@ -173,7 +173,7 @@ static int intel_th_sw_init(struct sth_device *sth) sth->stm.sw_start = reg & 0xffff; sth->stm.sw_end = reg >> 16; - sth->sw_nmasters = sth->stm.sw_end - sth->stm.sw_start; + sth->sw_nmasters = sth->stm.sw_end - sth->stm.sw_start + 1; dev_dbg(sth->dev, "sw_start: %x sw_end: %x masters: %x nchannels: %x\n", sth->stm.sw_start, sth->stm.sw_end, sth->sw_nmasters, sth->stm.sw_nchannels); -- 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/
