ASoC: omap-mcbsp: Fix latency value calculation for pm_qos

[ Upstream commit dd2f52d8991af9fe0928d59ec502ba52be7bc38d ]

The latency number is in usec for the pm_qos. Correct the calculation to
give us the time in usec

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index d0ebb6b..2d6decb 100644 (file)
--- a/sound/soc/omap/omap-mcbsp.c
+++ b/sound/soc/omap/omap-mcbsp.c
@@ -308,9 +308,9 @@ static int omap_mcbsp_dai_hw_params(struct snd_pcm_substream *substream,
                        pkt_size = channels;
                }
 
-               latency = ((((buffer_size - pkt_size) / channels) * 1000)
-                                / (params->rate_num / params->rate_den));
-
+               latency = (buffer_size - pkt_size) / channels;
+               latency = latency * USEC_PER_SEC /
+                         (params->rate_num / params->rate_den);
                mcbsp->latency[substream->stream] = latency;
 
                omap_mcbsp_set_threshold(substream, pkt_size);