Re: HELP: Is writeq an atomic operation??

David Miller
2008-05-02T22:49:22Z

From: Roland Dreier <rdreier@cisco.com>
Date: Fri, 02 May 2008 15:43:32 -0700

> Are there any 32-bit platforms with writeq()? A quick grep suggests not.

Right, I guess there aren't, but what drivers do currently is roll
their own 64-bit MMIO for such cases.

I noticed this when writing drivers/net/niu.c

I suppose this is on purpose, so the driver can setup any
such protection and handling, as needed.