tree 5aed488a12bcf2654990d715b9da314e9a8172ce
parent 7da998591798ea52938d8482b52ae3f854f14359
author Ben Dooks <ben-linux@fluff.org> 1202169727 +0000
committer Jeff Garzik <jeff@garzik.org> 1202745986 -0500

DM9000: Do not sleep with spinlock and IRQs held

The phy read and write routines call udelay() with the board
lock held, and with the posibility of IRQs being disabled. Since
these delays can be up to 500usec, and are only required as we
have to save the chip's address register.

To improve the behaviour, hold the lock whilst we are writing
and then restore the state before the delay and then repeat
the process once the delay has happened.

Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>