linux-kernel - Re: [PATCH 3/7] usb: gadget: pxa25x

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <87povrxfuu.fsf@belgarion.home>
Date:	Sat, 20 Feb 2016 21:54:17 +0100
From:	Robert Jarzmik <robert.jarzmik@...e.fr>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Krzysztof Hałasa <khalasa@...p.pl>,
	linux-arm-kernel@...ts.infradead.org,
	Felipe Balbi <balbi@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Felipe Balbi <balbi@...com>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Daniel Mack <daniel@...que.org>, Imre Kaloz <kaloz@...nwrt.org>
Subject: Re: [PATCH 3/7] usb: gadget: pxa25x_udc: use readl/writel for mmio

Arnd Bergmann <arnd@...db.de> writes:

> Coming back to the specific pxa25x_udc case: using __raw_* accessors
> in the driver would possibly end up breaking the PXA25x machines in
> the (very unlikely) case that someone wants to make it work with
> big-endian kernels, assuming it does not have the same hardware
> byteswap logic as ixp4xx.

As far as I know, pxa25x machine implies the kernel is little endian. From an
hardware perspective, pxa25x doesn't support big endian (old ARM platform).

So I don't think considering BE for pxa25x is ... necessary.

Cheers.

-- 
Robert