sound: remove driver_data direct access of struct device

In the near future, the driver core is going to not allow direct access
to the driver_data pointer in struct device.  Instead, the functions
dev_get_drvdata() and dev_set_drvdata() should be used.  These functions
have been around since the beginning, so are backwards compatible with
all older kernel versions.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/soc/codecs/wm8753.c b/sound/soc/codecs/wm8753.c
index a6e8f3f..d121e58 100644
--- a/sound/soc/codecs/wm8753.c
+++ b/sound/soc/codecs/wm8753.c
@@ -1822,14 +1822,14 @@
 	codec->hw_write = (hw_write_t)wm8753_spi_write;
 	codec->dev = &spi->dev;
 
-	spi->dev.driver_data = wm8753;
+	dev_set_drvdata(&spi->dev, wm8753);
 
 	return wm8753_register(wm8753);
 }
 
 static int __devexit wm8753_spi_remove(struct spi_device *spi)
 {
-	struct wm8753_priv *wm8753 = spi->dev.driver_data;
+	struct wm8753_priv *wm8753 = dev_get_drvdata(&spi->dev);
 	wm8753_unregister(wm8753);
 	return 0;
 }