Re: [PATCH] arc: use little endian accesses

From: Noam Camus
Date: Fri Mar 11 2016 - 00:22:14 EST

> From: Lada Trimasova <Lada.Trimasova@xxxxxxxxxxxx>
> Sent: Thursday, March 10, 2016 8:57 PM

> And for example, let's see what happens when we use "readl" in function "serial8250_early_in" in driver/tty/serial/8250.

Is your DTS entry includes for serial node following entries:
reg-io-width = <4>

if answer is yes you should expect (in case of big endian compilation) that:
port->iotype would be equal to UPIO_MEM32BE, hence no readl() use for this case.

This is how it works for me here, it sounds like your case is similar.