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1.gendisk: ÃèÊö¿éÉ豸ʵÌå(Ò»Õû¸önandflashоƬ)µÄ½á¹¹Ìå
        Õû¸ö¿éÉ豸µÄ×¢²á¹ý³Ì¶¼ÊÇÎ§ÈÆgendiskÀ´¿ªÕ¹µÄ
2. add_disk() //
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Ò»¡¢s3c2410nandflash¿ØÖÆÆ÷³õʼ»¯²½Öè:
        s3c2410_nand_init(&s3c2410_nand_driver)
        ->
driver_register->bus_add_driver()->driver_attach->bus_for_each_dev(__driver_attach)->driver_probe_device()->dev->probe()
[×îºóÕâ¸öº¯ÊýʵÖÊÊÇs3c2410_nand_probe()]
        -> s3c2410_nand_probe()
                        -> s3c24xx_nand_probe()
                                ->
s3c2410_nand_inithw() // ³õʼ»¯nandflash¿ØÖÆÆ÷
                                        ->
s3c2410_nand_init_chip()// ³õʼ»¯s3c2410 nandflashÇý¶¯×îµ×²ãµÄ·ÃÎÊ¿ØÖƺ¯Êý
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