[alsa-devel] [PATCH][sound/SOC] Do not register platform sound device unconditionally

Juergen Beisert jbe at pengutronix.de
Mon Nov 28 15:11:39 CET 2011

Registering a SOC device and also changing register unconditionally fails on
kernels which support more than one machine in one binary. Do it only if the
platform matches.

Signed-off-by: Juergen Beisert <jbe at pengutronix.de>

diff --git a/sound/soc/imx/mx27vis-aic32x4.c b/sound/soc/imx/mx27vis-aic32x4.c
index 054110b..c5cfb8a 100644
--- a/sound/soc/imx/mx27vis-aic32x4.c
+++ b/sound/soc/imx/mx27vis-aic32x4.c
@@ -96,6 +96,10 @@ static int __init mx27vis_aic32x4_init(void)
 	int ret;
+	if (!machine_is_imx27_visstrim_m10())
+		/* return happy. We run on a totally different machine */
+		return 0;
 	mx27vis_aic32x4_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!mx27vis_aic32x4_snd_device)
 		return -ENOMEM;

Pengutronix e.K.                              | Juergen Beisert             |
Linux Solutions for Science and Industry      | http://www.pengutronix.de/  |

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