From: John W. Linville <linville@tuxdriver.com>
To: b43-dev@lists.infradead.org
Subject: [PATCH] ssb: Clear RETRY_TIMEOUT in PCI Configuration
Date: Tue, 19 Oct 2010 14:02:24 -0400 [thread overview]
Message-ID: <20101019180224.GB2441@tuxdriver.com> (raw)
In-Reply-To: <4cbddbab.aeEgjpVFDD9GDTuy%Larry.Finger@lwfinger.net>
On Tue, Oct 19, 2010 at 12:55:55PM -0500, Larry Finger wrote:
> MMIO log traces obtained using the Broadcom wl hybrid driver show that
> the RETRY_TIMEOUT register (0x41) in PCI configuration space is cleared
> if non-zero. Similar code found in other drivers such as ipw2100 show
> this operation is needed to keep PCI Tx retries from interfering with
> C3 CPU state. There are no known cases where omission of this code has
> caused a problem, but this patch is offered just in case such a situation
> occurs.
>
> Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
> ---
>
> John,
>
> No particular urgency for this patch.
>
> Larry
I nearly missed it! Please do Cc linux-wireless at vger.kernel.org on patches.
John
--
John W. Linville Someday the world will need a hero, and you
linville at tuxdriver.com might be all we have. Be ready.
next prev parent reply other threads:[~2010-10-19 18:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-19 17:55 [PATCH] ssb: Clear RETRY_TIMEOUT in PCI Configuration Larry Finger
2010-10-19 18:02 ` John W. Linville [this message]
2010-10-19 18:21 ` Larry Finger
2010-10-19 21:04 ` Michael Büsch
2010-11-09 23:09 ` Rafał Miłecki
2010-11-09 23:13 ` Michael Büsch
2010-11-10 17:37 ` John W. Linville
2010-11-10 21:52 ` Michael Büsch
2010-11-16 20:40 ` John W. Linville
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