CC Michal and kbuild list. On Thu, Mar 27, 2014 at 04:51:53PM -0600, Bjorn Helgaas wrote: > [+cc David, Brian] > > On Thu, Mar 27, 2014 at 8:01 AM, Fengguang Wu <fengguang.wu@xxxxxxxxx> wrote: > > FYI, here is a very old warning, too old to be bisected. > > > > [ 5.282127] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, supports DPO and FUA > > [ 5.286079] SBC-GXx flash: IO:0x258-0x259 MEM:0xdc000-0xdffff > > [ 5.288723] ------------[ cut here ]------------ > > [ 5.289649] kernel BUG at include/linux/mtd/map.h:148! > > I think the problem is that your randconfig happens to have none of > CONFIG_MTD_MAP_BANK_WIDTH_* set (you should have played the lottery > today!), and the default implementation of map_bankwidth() in that > case is just "BUG()": > > $ grep MTD_MAP config-3.14.0-rc8-wl-03045-gdf16ea4 > # CONFIG_MTD_MAP_BANK_WIDTH_1 is not set > # CONFIG_MTD_MAP_BANK_WIDTH_2 is not set > # CONFIG_MTD_MAP_BANK_WIDTH_4 is not set > # CONFIG_MTD_MAP_BANK_WIDTH_8 is not set > # CONFIG_MTD_MAP_BANK_WIDTH_16 is not set > # CONFIG_MTD_MAP_BANK_WIDTH_32 is not set > > I don't know enough Kconfig or MTD to fix this. Michal, the problem we run into is, how to select one of the above CONFIG_MTD_MAP_BANK_WIDTH_xx in "make randconfig". Thanks, Fengguang -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
