9 Jan
2013
9 Jan
'13
12:17 a.m.
On 01/04/2013 06:18 PM, Lucas Stach wrote:
This adds a very simple machine driver using the Wolfson wm9712 AC97 codec.
diff --git a/sound/soc/tegra/tegra_wm9712.c b/sound/soc/tegra/tegra_wm9712.c
+static int tegra_wm9712_init(struct snd_soc_pcm_runtime *rtd)
- err = snd_soc_dapm_sync(dapm);
- if (err)
return err;- return 0;
That block is just "return snd_soc_dapm_sync(dapm);"
+static int tegra_wm9712_driver_probe(struct platform_device *pdev)
- machine->codec = platform_device_alloc("wm9712-codec", -1);
Hmmm. I thought that could be auto-instantiated based on probing the AC'97 bus for whatever was there?
- ret = platform_device_add(machine->codec);
- if (ret)
goto codec_put;
After this point, ...
- ret = snd_soc_of_parse_card_name(card, "nvidia,model");
- if (ret)
goto codec_put;
don't the error paths need to undo platform_device_add()? Or does platform_device_put() do that automatically?
+codec_put:
- platform_device_put(machine->codec);
- return ret;
+}
+static int tegra_wm9712_driver_remove(struct platform_device *pdev)
- platform_device_put(machine->codec);
Same comment here.