[PATCH v3] mtd:nor:timeout:fix do_write_buffer() timeout error

[Bean Huo]

> + Linux-MTD
>
> Please do not remove the MTD mailing list from your email. I am much
> more likely to ignore it that way.
>
> Also, please don't top post. I'm top-posting right now, because I can't
> understand your thread very easily, and it's hard to resurrect for
> sending to the mailing list anyway.
>
> Regarding Stijn's comments: if you have good reason to believe that some
> flash's CFI parameter will be non-zero, but incorrect, then perhaps you
> could enforce a minimum value.
>
> Brian
>

hi,Brian
Thanks for your warmly response about my patch.I have been waiting for your message too long.
It's hard for me to give you a good reason that some flash's CFI parameter is non-zero,and 
incorrect.I just found that if flash'buffer is 512 bytes,not 256 bytes,timeout error will happen.
If using CFI's timemout value,that is OK.But for cfi_cmdset_0001.c,it also use timeout value of CFI.
The difference with mine is that if timeout value is not defined in the CFI,the default maxmum timeout
value is 500000us.
Because my company's mailbox title exsits chinese words,and i sent this patch for 
many times,you don't have one response,so i thought that you maybe couldn't receive my email.later,i
chose my personal email.

For this patch,i will do some changes,please every maintainer and commit-signer check.