[alsa-devel] Question regarding "Fix backport of WM8994 thermal warning" patch

Mark Brown broonie at opensource.wolfsonmicro.com
Fri Nov 4 16:58:29 CET 2011

On Fri, Nov 04, 2011 at 08:11:58AM -0400, Thomas Abraham wrote:

> I am trying sound on Exynos4 smdk board with the latest 3.1 kernel. In

Do you mean the latest mainline?  The thermal warning support was only
implemented for v3.1 and the line numbers only match up with mainline.

> the function "wm8994_codec_probe", the kernel crashes due to null
> pointer when requesting "Thermal Warning" interrupt (line# 3183 of
> sound/soc/codecs/wm8994.c file). wm8994->control_data is actually NULL
> at this point.

This is just a straight bug, I'll post a patch.

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