linux-kernel - Re: [PATCH V3 1/1] ST SPEAr: PCIE gadget suppport

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]

Date:	Thu, 10 Feb 2011 23:31:00 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	pratyush <pratyush.anand@...com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, Greg KH <gregkh@...e.de>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: [PATCH V3 1/1] ST SPEAr: PCIE gadget suppport

On Fri, 11 Feb 2011 12:52:04 +0530 pratyush <pratyush.anand@...com> wrote:

> >>> This interface implies that there will only ever be one device in the
> >>> machine, yes?  Seems a bit short-sighted?
> >>>
> >>
> >> This device supports only one BAR in EP mode.
> > 
> > I don't understand that.
> > 
> > What happens if someone builds a computer with three of these devices
> > in it?
> > 
> 
> I understood it. I will modify the code to work with multiple instances of
> pcie device.

I don't think you need to go that far, unless you see a significant
likelihood think that such a computer might be created one day.  This
depends on how hard and risky such a change is, of course.

But the current driver's userspace interface should at least
anticipate the possibility, so you aren't trapped into a weird or
non-back-compatible interface in the future.

So for now you might choose to do something as simple as renaming
/config/pcie-gadget to /config/pcie-gadget0 and leave it at that.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/