From: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Date: Mon, 25 Jul 2016 01:52:43 +0000 (+0000)
Subject: ASoC: rsnd: Fixup SRCm_IFSVR calculate method
X-Git-Tag: v4.14-rc1~2519^2~10^2~2^2
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=93ca33c99f22a0a096f83f19c9f887aeb67507a1;p=platform%2Fkernel%2Flinux-rpi.git

ASoC: rsnd: Fixup SRCm_IFSVR calculate method

This patch fixes the calculation accuracy degradation of SRCm_IFSVR
register value.

Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/sh/rcar/src.c b/sound/soc/sh/rcar/src.c
index e39f916..969a516 100644
--- a/sound/soc/sh/rcar/src.c
+++ b/sound/soc/sh/rcar/src.c
@@ -226,8 +226,12 @@ static void rsnd_src_set_convert_rate(struct rsnd_dai_stream *io,
 	ifscr = 0;
 	fsrate = 0;
 	if (fin != fout) {
+		u64 n;
+
 		ifscr = 1;
-		fsrate = 0x0400000 / fout * fin;
+		n = (u64)0x0400000 * fin;
+		do_div(n, fout);
+		fsrate = n;
 	}
 
 	/*