Patch "ASoC: ops: Fix bounds check for _sx controls" has been added to the 5.4-stable tree

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This is a note to let you know that I've just added the patch titled

    ASoC: ops: Fix bounds check for _sx controls

to the 5.4-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-fix-bounds-check-for-_sx-controls.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 1c3304eedd2c027e4c9768a1d0541f7ad8406eb7
Author: Mark Brown <broonie@xxxxxxxxxx>
Date:   Wed May 11 14:41:36 2022 +0100

    ASoC: ops: Fix bounds check for _sx controls
    
    [ Upstream commit 698813ba8c580efb356ace8dbf55f61dac6063a8 ]
    
    For _sx controls the semantics of the max field is not the usual one, max
    is the number of steps rather than the maximum value. This means that our
    check in snd_soc_put_volsw_sx() needs to just check against the maximum
    value.
    
    Fixes: 4f1e50d6a9cf9c1b ("ASoC: ops: Reject out of bounds values in snd_soc_put_volsw_sx()")
    Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
    Link: https://lore.kernel.org/r/20220511134137.169575-1-broonie@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 453b61b42dd9..2faf95d4bb75 100644
--- a/sound/soc/soc-ops.c
+++ b/sound/soc/soc-ops.c
@@ -445,7 +445,7 @@ int snd_soc_put_volsw_sx(struct snd_kcontrol *kcontrol,
 	val = ucontrol->value.integer.value[0];
 	if (mc->platform_max && val > mc->platform_max)
 		return -EINVAL;
-	if (val > max - min)
+	if (val > max)
 		return -EINVAL;
 	if (val < 0)
 		return -EINVAL;



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