This change will fix NULL pointer dereference while reading
from spi nand flash in oobbuf.
The multipage read features is only to read with ecc for
raw read/write the the access is page wise due to mtd layer
will request only one page at a time. So don't increment oobbuf
for every page while reading if already bitflips are present in spi
nand flash. if so data abort will happen due to NULL pointer
dereference.
error:
NAND read: device 0 offset 0x4480000, size 0x1000
data abort
pc : [<4a9515ec>] lr : [<44000e18>]
reloc pc : [<4a9515ec>] lr : [<44000e18>]
sp : 4a77f6f4 ip : bbfff3dc fp : 4a783510
r10: 4a97bb40 r9 : 4a77feb0 r8 : 44000e0c
r7 : 4a97ca2c r6 : 0000000f r5 : 00000004 r4 : 00000003
r3 : ffffffff r2 : 000001f4 r1 : 000000ff r0 : 44000e0c
Flags: nzCv IRQs off FIQs off Mode SVC_32
Resetting CPU ...
resetting ...
Signed-off-by: Md Sadre Alam <mdalam@codeaurora.org>
Change-Id: I435f65183b56ceef64bad7d0df7ffebe02175a66
ae38a196ca