The standard snd_soc_info_volsw() detects if a control is a volume control and needs to be reported as an integer even if it only has two values by looking for the string " Volume" in the control name. This results in false positives if the control has a name like "HP Volume Ramp Switch" since any " Volume" is matched, not just a trailing one. Fix this by making sure that we only match at the end of the control name. Signed-off-by: Mark Brown <broonie@kernel.org> --- sound/soc/soc-ops.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c index e11109dcaa50..0267e39de2a8 100644 --- a/sound/soc/soc-ops.c +++ b/sound/soc/soc-ops.c @@ -176,13 +176,21 @@ int snd_soc_info_volsw(struct snd_kcontrol *kcontrol, { struct soc_mixer_control *mc = (struct soc_mixer_control *)kcontrol->private_value; + const char *vol_string = NULL; int max; max = uinfo->value.integer.max = mc->max - mc->min; if (mc->platform_max && mc->platform_max < max) max = mc->platform_max; - if (max == 1 && !strstr(kcontrol->id.name, " Volume")) + /* Even two value controls ending in Volume should always be integer */ + if (max == 1) { + vol_string = strstr(kcontrol->id.name, " Volume"); + if (vol_string && strcmp(vol_string, " Volume")) + vol_string = NULL; + } + + if (!vol_string) uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN; else uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; -- 2.30.2