PER_INFO_BYTE
info_bytes = nsectors * PER_INFO_BYTE;
info = kzalloc(PER_INFO_BYTE, GFP_KERNEL);
PER_INFO_BYTE, DMA_FROM_DEVICE);
meson_nfc_dma_buffer_release(nand, len, PER_INFO_BYTE, DMA_FROM_DEVICE);
info_len = nand->ecc.steps * PER_INFO_BYTE;
memset(meson_chip->info_buf, 0, nand->ecc.steps * PER_INFO_BYTE);
info_len = nand->ecc.steps * PER_INFO_BYTE;