Hi Takashi, Today's linux-next build (x86_64 allmodconfig) failed like this: sound/soc/codecs/wm8994.c:30:35: error: linux/mfd/wm8994/core.h: No such file or directory sound/soc/codecs/wm8994.c:31:40: error: linux/mfd/wm8994/registers.h: No such file or directory sound/soc/codecs/wm8994.c:32:36: error: linux/mfd/wm8994/pdata.h: No such file or directory sound/soc/codecs/wm8994.c:33:35: error: linux/mfd/wm8994/gpio.h: No such file or directory And went down hill form there :-( Caused by commit 9e6e96a197a03752d39a63e4f83e0b707ccedad7 ("ASoC: Add WM8994 CODEC driver"). I presume that this commit depends on commits currently only in the mfd tree ... I have used the sound tree from next-20100201 for today. To fix this, the relevant commits from the mfd tree could be put into a "never to be rebased" branch (or separate git tree) and then this branch merged into both the sound and mfd trees. -- Cheers, Stephen Rothwell sfr@canb.auug.org.au http://www.canb.auug.org.au/~sfr/