From: Stephen Hemminger <shemminger@vyatta.com>
To: Mike McCormack <mikem@ring3k.org>
Cc: netdev@vger.kernel.org, Rene Mayrhofer <rene@mayrhofer.eu.org>,
Richard Leitner <leitner@esys.at>
Subject: Re: [PATCH] sky2: Serialize access to PCI config space
Date: Thu, 6 Aug 2009 08:34:36 -0700 [thread overview]
Message-ID: <20090806083436.2879bf7b@nehalam> (raw)
In-Reply-To: <4A7ABA23.6060201@ring3k.org>
On Thu, 06 Aug 2009 20:10:27 +0900
Mike McCormack <mikem@ring3k.org> wrote:
> PCI config space may be shared across two device instances,
> or accessed from an interrupt
> , so serialize access so
> read-update-write operations do not interfere with each other.
>
> Only tested on a single port card, as my sky2 doesn't have dual ports.
>
> Signed-off-by: Mike McCormack <mikem@ring3k.org>
No, more locks is not better design. Better to just use existing
RTNL mutex consistently.
next prev parent reply other threads:[~2009-08-06 15:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-08-06 11:10 [PATCH] sky2: Serialize access to PCI config space Mike McCormack
2009-08-06 15:34 ` Stephen Hemminger [this message]
-- strict thread matches above, loose matches on Subject: below --
2009-08-09 11:37 Mike McCormack
2009-08-10 15:23 ` Stephen Hemminger
2009-08-10 15:27 ` Stephen Hemminger
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