Patch to allow the ed driver interrupt routine to terminate if the card is ejected while we're in this routine.
Patch to allow the ed driver interrupt routine to terminate if the
card is ejected while we're in this routine.

yamamoto-san's original patch had a small race window for AX88190
chips, which I corrected by limiting the number of iterations we'd try
to reset the bits to be about 15ms rather than forever.  This seems to
work for me, but I don't have a large collections of cards based on
this chipset.

Submitted by:	YAMAMOTO Shigeru

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