tree af2586a77b8a2df84dc5a5855e88ea469c713e46
parent 434a1dd2c0e4f6af3fa4ca9cc3e88bbf07b8f41c
author Richard Weinberger <richard@nod.at> 1520073954 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1524555249 +0200

ubi: Reject MLC NAND

commit b5094b7f135be34630e3ea8a98fa215715d0f29d upstream.

While UBI and UBIFS seem to work at first sight with MLC NAND, you will
most likely lose all your data upon a power-cut or due to read/write
disturb.
In order to protect users from bad surprises, refuse to attach to MLC
NAND.

Cc: stable@vger.kernel.org
Signed-off-by: Richard Weinberger <richard@nod.at>
Acked-by: Boris Brezillon <boris.brezillon@bootlin.com>
Acked-by: Artem Bityutskiy <dedekind1@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>