ASoC: ops: Fix off by one in range control validation

[ Upstream commit 5871321fb4558c55bf9567052b618ff0be6b975e ]

We currently report that range controls accept a range of 0..(max-min) but
accept writes in the range 0..(max-min+1). Remove that extra +1.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20220604105246.4055214-1-broonie@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/sound/soc/soc-ops.c b/sound/soc/soc-ops.c
index 90ba5521c189d691b099e93de51ba996cd1b39ab..4fda8c24be291c6d6e06b1d4d5429e8d7f826eca 100644 (file)
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -535,7 +535,7 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
                return -EINVAL;
        if (mc->platform_max && tmp > mc->platform_max)
                return -EINVAL;
-       if (tmp > mc->max - mc->min + 1)
+       if (tmp > mc->max - mc->min)
                return -EINVAL;
 
        if (invert)
@@ -556,7 +556,7 @@ int snd_soc_put_volsw_range(struct snd_kcontrol *kcontrol,
                        return -EINVAL;
                if (mc->platform_max && tmp > mc->platform_max)
                        return -EINVAL;
-               if (tmp > mc->max - mc->min + 1)
+               if (tmp > mc->max - mc->min)
                        return -EINVAL;
 
                if (invert)