[android-porting] Where and how is the "__initdata" used in nand driver?

[w d]

Hi,
   Now,I'm porting Android nand driver.
   I found a variable "__initdata":

   *static struct s3c2410_uartcfg smdkc100_uartcfgs[] _initdata = {......},*

   Where and how is "__initdata" used.

   Thanks!

   dwlinux

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