From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Wed, 14 Nov 2018 11:06:21 +0000 (+0200)
Subject: ASoC: omap-mcbsp: Fix latency value calculation for pm_qos
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=4a3fa2a5fed133fd2f26e5f37acdb23ad6e0900c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

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 6b40bdbef336..47c2ed5ca492 100644
--- 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);