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Date: Tue, 4 Oct 2011 09:55:40 +1100
From: Ryan Mallon <rmallon@...il.com>
To: broonie@...nsource.wolfsonmicro.com
Cc: axel.lin@...il.com, linux-kernel@...r.kernel.org, lrg@...com,
alsa-devel@...a-project.org, peter.hsiang@...im-ic.com,
jesse.marroquin@...im-ic.com, hidave.darkstar@...il.com,
Ryan Mallon <rmallon@...il.com>
Subject: [PATCH 1/2] ASoC: max98088 codec: Catch driver bugs for eq channel name
Move the EQ channel names to a separate array and iterate over it in
max98088_get_channel rather than duplicating the hardcoded channel
names. Add an error message if an invalid channel is passed and check
the error in the callers.
Also added a BUILD_BUG_ON to ensure that the eq_mode_name and controls
arrays are the same size.
Signed-off-by: Ryan Mallon <rmallon@...il.com>
---
sound/soc/codecs/max98088.c | 34 +++++++++++++++++++++++-----------
1 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/sound/soc/codecs/max98088.c b/sound/soc/codecs/max98088.c
index ac65a2d..8f55e34 100644
--- a/sound/soc/codecs/max98088.c
+++ b/sound/soc/codecs/max98088.c
@@ -1697,13 +1697,19 @@ static struct snd_soc_dai_driver max98088_dai[] = {
}
};
-static int max98088_get_channel(const char *name)
+static const char *eq_mode_name[] = {"EQ1 Mode", "EQ2 Mode"};
+
+static int max98088_get_channel(struct snd_soc_codec *codec, const char *name)
{
- if (strcmp(name, "EQ1 Mode") == 0)
- return 0;
- if (strcmp(name, "EQ2 Mode") == 0)
- return 1;
- return -EINVAL;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(eq_mode_name); i++)
+ if (strcmp(name, eq_mode_name[i]) == 0)
+ return i;
+
+ /* Shouldn't happen */
+ dev_err(codec->dev, "Bad EQ channel name '%s'\n", name);
+ return -EINVAL;
}
static void max98088_setup_eq1(struct snd_soc_codec *codec)
@@ -1807,10 +1813,13 @@ static int max98088_put_eq_enum(struct snd_kcontrol *kcontrol,
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct max98088_priv *max98088 = snd_soc_codec_get_drvdata(codec);
struct max98088_pdata *pdata = max98088->pdata;
- int channel = max98088_get_channel(kcontrol->id.name);
+ int channel = max98088_get_channel(codec, kcontrol->id.name);
struct max98088_cdata *cdata;
int sel = ucontrol->value.integer.value[0];
+ if (channel < 0)
+ return channel;
+
cdata = &max98088->dai[channel];
if (sel >= pdata->eq_cfgcnt)
@@ -1835,9 +1844,12 @@ static int max98088_get_eq_enum(struct snd_kcontrol *kcontrol,
{
struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);
struct max98088_priv *max98088 = snd_soc_codec_get_drvdata(codec);
- int channel = max98088_get_channel(kcontrol->id.name);
+ int channel = max98088_get_channel(codec, kcontrol->id.name);
struct max98088_cdata *cdata;
+ if (channel < 0)
+ return channel;
+
cdata = &max98088->dai[channel];
ucontrol->value.enumerated.item[0] = cdata->eq_sel;
return 0;
@@ -1852,17 +1864,17 @@ static void max98088_handle_eq_pdata(struct snd_soc_codec *codec)
int i, j;
const char **t;
int ret;
-
struct snd_kcontrol_new controls[] = {
- SOC_ENUM_EXT("EQ1 Mode",
+ SOC_ENUM_EXT((char *)eq_mode_name[0],
max98088->eq_enum,
max98088_get_eq_enum,
max98088_put_eq_enum),
- SOC_ENUM_EXT("EQ2 Mode",
+ SOC_ENUM_EXT((char *)eq_mode_name[1],
max98088->eq_enum,
max98088_get_eq_enum,
max98088_put_eq_enum),
};
+ BUILD_BUG_ON(ARRAY_SIZE(controls) != ARRAY_SIZE(eq_mode_name));
cfg = pdata->eq_cfg;
cfgcnt = pdata->eq_cfgcnt;
--
1.7.0.4
--
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