Hi Artem, FYI, kernel build failed on tree: git://git.infradead.org/users/dedekind/l2-mtd.git master head: aab3579da086837b3f94b30d10e222c0e10080b1 commit: aab3579da086837b3f94b30d10e222c0e10080b1 [64/64] mtd: cmdlinepart: revise error handling config: powerpc-corenet64_smp_defconfig (attached as .config) All related error/warning messages: drivers/mtd/cmdlinepart.c: In function 'newpart': drivers/mtd/cmdlinepart.c:113:4: error: implicit declaration of function 'ERR_PTR' [-Werror=implicit-function-declaration] drivers/mtd/cmdlinepart.c:113:4: warning: return makes pointer from integer without a cast [enabled by default] drivers/mtd/cmdlinepart.c:141:4: warning: return makes pointer from integer without a cast [enabled by default] drivers/mtd/cmdlinepart.c:175:4: warning: return makes pointer from integer without a cast [enabled by default] drivers/mtd/cmdlinepart.c:180:3: error: implicit declaration of function 'IS_ERR' [-Werror=implicit-function-declaration] drivers/mtd/cmdlinepart.c:192:4: error: implicit declaration of function 'PTR_ERR' [-Werror=implicit-function-declaration] drivers/mtd/cmdlinepart.c:192:4: warning: return makes pointer from integer without a cast [enabled by default] cc1: some warnings being treated as errors --- 0-DAY kernel build testing backend Open Source Technology Centre Fengguang Wu Intel Corporation