mtd: omap2: allow bulding as a module

The omap2 nand device driver calls into the the elm code, which can
be a loadable module, and in that case it cannot be built-in itself.
I can see no reason why the omap2 driver cannot also be a module,
so let's make the option "tristate" in Kconfig to fix this allmodconfig
build error:

ERROR: "elm_config" [drivers/mtd/nand/omap2.ko] undefined!
ERROR: "elm_decode_bch_error_page" [drivers/mtd/nand/omap2.ko] undefined!

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Cc: Afzal Mohammed <afzal@ti.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: linux-mtd@lists.infradead.org

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index a60f6c17f57b62acd19528b62a7d1b329df12913..50543f1662150ade806e9967190c60426a9ab029 100644 (file)
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -95,7 +95,7 @@ config MTD_NAND_OMAP2
 
 config MTD_NAND_OMAP_BCH
        depends on MTD_NAND && MTD_NAND_OMAP2 && ARCH_OMAP3
-       bool "Enable support for hardware BCH error correction"
+       tristate "Enable support for hardware BCH error correction"
        default n
        select BCH
        select BCH_CONST_PARAMS