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>
mariux64 · Jul 27, 2016 · 93ca33c · 93ca33c
1 parent 523d939
commit 93ca33c
Showing 1 changed file with 5 additions and 1 deletion.
diff --git 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;
 	}
 
 	/*