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| author | Tim Gardner <tim.gardner@canonical.com> | 2013-03-10 20:58:21 +0400 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2013-03-12 22:50:00 +0400 |
| commit | 1f5353e765fe2a1168477bfe55e4dd7cdd96b477 (patch) | |
| tree | 3aba70485940df2680169a5dec6f4f6b7f0419b6 /sound/soc/codecs/wm_hubs.c | |
| parent | f6161aa153581da4a3867a2d1a7caf4be19b6ec9 (diff) | |
| download | linux-1f5353e765fe2a1168477bfe55e4dd7cdd96b477.tar.xz | |
ASoC: wm_hubs: Silence reg_r and reg_l 'may be used uninitialized' warnings
Return an error from wm_hubs_read_dc_servo() if hubs->dcs_readback_mode is not
correctly initialized. You might as well bail out since nothing is likely to
work correctly afterwards.
sound/soc/codecs/wm_hubs.c:321:11: warning: 'reg_r' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm_hubs.c:251:13: note: 'reg_r' was declared here
sound/soc/codecs/wm_hubs.c:322:11: warning: 'reg_l' may be used uninitialized in this function [-Wuninitialized]
sound/soc/codecs/wm_hubs.c:251:6: note: 'reg_l' was declared here
gcc version 4.6.3
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/codecs/wm_hubs.c')
| -rw-r--r-- | sound/soc/codecs/wm_hubs.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sound/soc/codecs/wm_hubs.c b/sound/soc/codecs/wm_hubs.c index 867ae97ddcec..f5d81b948759 100644 --- a/sound/soc/codecs/wm_hubs.c +++ b/sound/soc/codecs/wm_hubs.c @@ -199,11 +199,12 @@ static void wm_hubs_dcs_cache_set(struct snd_soc_codec *codec, u16 dcs_cfg) list_add_tail(&cache->list, &hubs->dcs_cache); } -static void wm_hubs_read_dc_servo(struct snd_soc_codec *codec, +static int wm_hubs_read_dc_servo(struct snd_soc_codec *codec, u16 *reg_l, u16 *reg_r) { struct wm_hubs_data *hubs = snd_soc_codec_get_drvdata(codec); u16 dcs_reg, reg; + int ret = 0; switch (hubs->dcs_readback_mode) { case 2: @@ -236,8 +237,9 @@ static void wm_hubs_read_dc_servo(struct snd_soc_codec *codec, break; default: WARN(1, "Unknown DCS readback method\n"); - return; + ret = -1; } + return ret; } /* @@ -286,7 +288,8 @@ static void enable_dc_servo(struct snd_soc_codec *codec) WM8993_DCS_TRIG_STARTUP_1); } - wm_hubs_read_dc_servo(codec, ®_l, ®_r); + if (wm_hubs_read_dc_servo(codec, ®_l, ®_r) < 0) + return; dev_dbg(codec->dev, "DCS input: %x %x\n", reg_l, reg_r); |