diff options
| author | Colin Ian King <colin.king@canonical.com> | 2018-09-06 11:41:52 +0100 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:35:15 +0800 |
| commit | d45f14f8d3c1633ec9c9ccf964e43612ad824dda (patch) | |
| tree | 8c395d9531a1b59796cdb6347138a8e4900e7cdc /sound/soc/codecs/sgtl5000.c | |
| parent | 56a61657168b1a74d619e0a4db0a025a9f0e0177 (diff) | |
ASoC: sgtl5000: avoid division by zero if lo_vag is zero
In the case where lo_vag <= SGTL5000_LINE_OUT_GND_BASE, lo_vag
is set to zero and later vol_quot is computed by dividing by
lo_vag causing a division by zero error. Fix this by avoiding
a zero division and set vol_quot to zero in this specific case
so that the lowest setting for i is correctly set.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/codecs/sgtl5000.c')
| -rw-r--r-- | sound/soc/codecs/sgtl5000.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/soc/codecs/sgtl5000.c b/sound/soc/codecs/sgtl5000.c index 0b11a2e01b2f..f3ffa31b5bca 100644 --- a/sound/soc/codecs/sgtl5000.c +++ b/sound/soc/codecs/sgtl5000.c @@ -1137,7 +1137,7 @@ static int sgtl5000_set_power_regs(struct snd_soc_codec *codec) * Searching for a suitable index solving this formula: * idx = 40 * log10(vag_val / lo_cagcntrl) + 15 */ - vol_quot = (vag * 100) / lo_vag; + vol_quot = lo_vag ? (vag * 100) / lo_vag : 0; lo_vol = 0; for (i = 0; i < ARRAY_SIZE(vol_quot_table); i++) { if (vol_quot >= vol_quot_table[i]) |