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ASoC: wcd9xxx: check impedance index before use

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Impedance index may be out of range. Check if impedance index
is out of range before use.

CRs-Fixed: 1046606
Change-Id: Ia490d15a51ad70759c917fbe7e84fdadaa140e20
Signed-off-by: Meng Wang <mwang@codeaurora.org>
This commit is contained in:
Meng Wang 2016-09-02 09:47:05 +08:00 • committed by Gerrit - the friendly Code Review server
parent 11d6060fff
commit c1a7f6ff7b
1 changed files with 5 additions and 0 deletions
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5
sound/soc/codecs/wcd9xxx-common-v2.c
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@ -198,6 +198,11 @@ void wcd_clsh_imped_config(struct snd_soc_codec *codec, int imped, bool reset)
pr_debug("%s, impedance not in range = %d\n", __func__, imped); pr_debug("%s, impedance not in range = %d\n", __func__, imped);
return; return;
} }
if (index >= ARRAY_SIZE(imped_table)) {
pr_debug("%s, impedance index not in range = %d\n", __func__,
index);
return;
}
for (i = 0; i < MAX_IMPED_PARAMS; i++) for (i = 0; i < MAX_IMPED_PARAMS; i++)
snd_soc_update_bits(codec, imped_table[index][i].reg, snd_soc_update_bits(codec, imped_table[index][i].reg,
imped_table[index][i].mask, imped_table[index][i].mask,