From: Mark Brown Date: Wed, 3 Jan 2024 18:34:01 +0000 (+0000) Subject: ASoC: meson: g12a-toacodec: Validate written enum values X-Git-Tag: v6.6.17~1598 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=97ee19ff491479822eade8a869d49f9ddcd71e75;p=platform%2Fkernel%2Flinux-rpi.git ASoC: meson: g12a-toacodec: Validate written enum values [ Upstream commit 3150b70e944ead909260285dfb5707d0bedcf87b ] When writing to an enum we need to verify that the value written is valid for the enumeration, the helper function snd_soc_item_enum_to_val() doesn't do it since it needs to return an unsigned (and in any case we'd need to check the return value). Fixes: af2618a2eee8 ("ASoC: meson: g12a: add internal DAC glue driver") Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20240103-meson-enum-val-v1-1-424af7a8fb91@kernel.org Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- diff --git a/sound/soc/meson/g12a-toacodec.c b/sound/soc/meson/g12a-toacodec.c index 6c45037..dd7f07d 100644 --- a/sound/soc/meson/g12a-toacodec.c +++ b/sound/soc/meson/g12a-toacodec.c @@ -71,6 +71,9 @@ static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol, struct soc_enum *e = (struct soc_enum *)kcontrol->private_value; unsigned int mux, reg; + if (ucontrol->value.enumerated.item[0] >= e->items) + return -EINVAL; + mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]); regmap_field_read(priv->field_dat_sel, ®);