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Date: Wed, 5 Dec 2018 04:34:52 -0500
From: Sasha Levin <sashal@...nel.org>
To: stable@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Peter Ujfalusi <peter.ujfalusi@...com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>, linux-omap@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 060/123] ASoC: omap-mcbsp: Fix latency value calculation for pm_qos
From: Peter Ujfalusi <peter.ujfalusi@...com>
[ 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@...com>
Acked-by: Jarkko Nikula <jarkko.nikula@...mer.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
sound/soc/omap/omap-mcbsp.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/omap/omap-mcbsp.c b/sound/soc/omap/omap-mcbsp.c
index d0ebb6b9bfac..2d6decbfc99e 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);
--
2.17.1
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