[PATCH] mlx4_en: fix transmit of packages when blue frame is enabled

[Eli Cohen]

On Mon, Oct 10, 2011 at 09:40:17AM +0100, David Laight wrote:
> 
> Actually memory barriers shouldn't really be added to
> any of these 'accessor' functions.
> (Or, at least, ones without barriers should be provided.)
> 
> The driver may want to to a series of writes, then a
> single barrier, before a final write of a command (etc).
> 
> in_le32() from io.h is specially horrid!
> 
> 	David
> 
The driver would like to control if and when we want to put a memory
barrier. We really don't want it to be done under the hood. In this
respect we prefer raw functions which are still available to all
platforms.