Hi Ben,

FYI, kernel build failed on

tree:   git://git.freedesktop.org/git/nouveau/linux-2.6 drm-nouveau-next
head:   b9f10852fcb1f09369d931dcbfbaad89ad1da4ad
commit: ebb945a94bba2ce8dff7b0942ff2b3f2a52a0a69 [38/97] drm/nouveau: port all engines to new engine module format
config: i386-randconfig-b113 (attached as .config)

All error/warnings:

drivers/gpu/drm/nouveau/nouveau_bo.c: In function 'nouveau_ttm_tt_create':
drivers/gpu/drm/nouveau/nouveau_bo.c:463:3: error: implicit declaration of function 'ttm_agp_tt_create' [-Werror=implicit-function-declaration]
drivers/gpu/drm/nouveau/nouveau_bo.c:463:3: warning: return makes pointer from integer without a cast [enabled by default]
cc1: some warnings being treated as errors

vim +463 drivers/gpu/drm/nouveau/nouveau_bo.c

649bf3ca (Jerome Glisse 2011-11-01  455) static struct ttm_tt *
ebb945a9 (Ben Skeggs    2012-07-20  456) nouveau_ttm_tt_create(struct ttm_bo_device *bdev, unsigned long size,
ebb945a9 (Ben Skeggs    2012-07-20  457) 		      uint32_t page_flags, struct page *dummy_read)
6ee73861 (Ben Skeggs    2009-12-11  458) {
ebb945a9 (Ben Skeggs    2012-07-20  459) 	struct nouveau_drm *drm = nouveau_bdev(bdev);
ebb945a9 (Ben Skeggs    2012-07-20  460) 	struct drm_device *dev = drm->dev;
6ee73861 (Ben Skeggs    2009-12-11  461) 
ebb945a9 (Ben Skeggs    2012-07-20  462) 	if (drm->agp.stat == ENABLED) {
ebb945a9 (Ben Skeggs    2012-07-20 @463) 		return ttm_agp_tt_create(bdev, dev->agp->bridge, size,
ebb945a9 (Ben Skeggs    2012-07-20  464) 					 page_flags, dummy_read);
6ee73861 (Ben Skeggs    2009-12-11  465) 	}
6ee73861 (Ben Skeggs    2009-12-11  466) 
ebb945a9 (Ben Skeggs    2012-07-20  467) 	return nouveau_sgdma_create_ttm(bdev, size, page_flags, dummy_read);
6ee73861 (Ben Skeggs    2009-12-11  468) }

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0-DAY kernel build testing backend         Open Source Technology Center
Fengguang Wu, Yuanhan Liu                              Intel Corporation