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[1/2] ASoC: ops: add correct range check for limiting volume

Message ID 20231204124736.132185-2-srinivas.kandagatla@linaro.org
State Accepted
Commit fb9ad24485087e0f00d84bee7a5914640b2b9024
Headers show
Series ASoC: qcom: Limit Digital gains on speaker | expand

Commit Message

Srinivas Kandagatla Dec. 4, 2023, 12:47 p.m. UTC 
From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

Volume can have ranges that start with negative values, ex: -84dB to
+40dB. Apply correct range check in snd_soc_limit_volume before setting
the platform_max. Without this patch, for example setting a 0dB limit on
a volume range of -84dB to +40dB would fail.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 sound/soc/soc-ops.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index 55b009d3c681..2d25748ca706 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -661,7 +661,7 @@  int snd_soc_limit_volume(struct snd_soc_card *card,
 	kctl = snd_soc_card_get_kcontrol(card, name);
 	if (kctl) {
 		struct soc_mixer_control *mc = (struct soc_mixer_control *)kctl->private_value;
-		if (max <= mc->max) {
+		if (max <= mc->max - mc->min) {
 			mc->platform_max = max;
 			ret = 0;
 		}