This is a note to let you know that I've just added the patch titled
ASoC: ops: add correct range check for limiting volume
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-ops-add-correct-range-check-for-limiting-volume.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit beee2646e1047e0e9ae807552ac9626439c4aa78
Author: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Date: Mon Dec 4 12:47:35 2023 +0000
ASoC: ops: add correct range check for limiting volume
[ Upstream commit fb9ad24485087e0f00d84bee7a5914640b2b9024 ]
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@xxxxxxxxxx>
Tested-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Reviewed-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231204124736.132185-2-srinivas.kandagatla@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index 12effaa59fdb..c56379fac927 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -644,7 +644,7 @@ 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;
}
