Hi Richard,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/rw/ubi2.git ubi2/v18
head:   f7fbc8aaaf15a66d77a3c94213ed77277f7bd8b1
commit: 4866acd5361a6f5d0efdf9c08a60862a158e2e61 [9/17] UBI: Add fastmap stuff to ubi.h
config: x86_64-randconfig-s002 (attached as .config)

All error/warnings:

drivers/mtd/ubi/build.c: In function 'ubi_attach_mtd_dev':
drivers/mtd/ubi/build.c:941:2: error: too few arguments to function 'ubi_attach'
In file included from drivers/mtd/ubi/build.c:44:0:
drivers/mtd/ubi/ubi.h:713:5: note: declared here
--
drivers/mtd/ubi/attach.c: In function 'scan_all':
drivers/mtd/ubi/attach.c:1220:2: error: implicit declaration of function 'ubi_destroy_ai' [-Werror=implicit-function-declaration]
drivers/mtd/ubi/attach.c: At top level:
drivers/mtd/ubi/attach.c:1231:5: error: conflicting types for 'ubi_attach'
In file included from drivers/mtd/ubi/attach.c:90:0:
drivers/mtd/ubi/ubi.h:713:5: note: previous declaration of 'ubi_attach' was here
drivers/mtd/ubi/attach.c:1309:6: warning: conflicting types for 'ubi_destroy_ai' [enabled by default]
drivers/mtd/ubi/attach.c:1220:2: note: previous implicit declaration of 'ubi_destroy_ai' was here
cc1: some warnings being treated as errors

vim +941 drivers/mtd/ubi/build.c
   935			goto out_free;
   936	
   937		err = ubi_debugging_init_dev(ubi);
   938		if (err)
   939			goto out_free;
   940	
 > 941		err = ubi_attach(ubi);
   942		if (err) {
   943			ubi_err("failed to attach mtd%d, error %d", mtd->index, err);
   944			goto out_debugging;

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