[alsa-devel] [PATCH V4 1/3] ASoC: fsl_asrc: Fix the issue about unsupported rate

[S.j. Wang]

When the output sample rate is [8kHz, 30kHz], the limitation
of the supported ratio range is (1/24, 8). In the driver
we use (8kHz, 30kHz) instead of [8kHz, 30kHz].
So this patch is to fix this issue and the potential rounding
issue with divider.

Fixes: fff6e03c7b65 ("ASoC: fsl_asrc: add support for 8-30kHz
output sample rate")
Cc: <stable at vger.kernel.org>
Signed-off-by: Shengjiu Wang <shengjiu.wang at nxp.com>
---
 sound/soc/fsl/fsl_asrc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c
index 0b937924d2e4..5b8adc7fb117 100644
--- a/sound/soc/fsl/fsl_asrc.c
+++ b/sound/soc/fsl/fsl_asrc.c
@@ -282,10 +282,10 @@ static int fsl_asrc_config_pair(struct fsl_asrc_pair *pair)
 		return -EINVAL;
 	}
 
-	if ((outrate > 8000 && outrate < 30000) &&
-	    (outrate/inrate > 24 || inrate/outrate > 8)) {
-		pair_err("exceed supported ratio range [1/24, 8] for \
-				inrate/outrate: %d/%d\n", inrate, outrate);
+	if ((outrate >= 8000 && outrate <= 30000) &&
+	    (outrate > 24 * inrate || inrate > 8 * outrate)) {
+		pair_err("exceed supported ratio range (1/24, 8) for inrate/outrate: %d/%d\n",
+				inrate, outrate);
 		return -EINVAL;
 	}
 
-- 
1.9.1