From: Larry Finger <Larry.Finger@lwfinger.net>
To: b43-dev@lists.infradead.org
Subject: MMIO trace for "warm" boot of b43 on IdeaPad S9 (was: Re: PIO mode)
Date: Wed, 20 Oct 2010 17:19:26 -0500 [thread overview]
Message-ID: <4CBF6AEE.8050208@lwfinger.net> (raw)
In-Reply-To: <20101020193707.GT1593@home.pavel.comp>
On 10/20/2010 02:37 PM, Paul Fertser wrote:
> Attached. (stop network manager, modprobe wl, rmmod wl, start network-manager,
> start tracing, modprobe b43, wait for association).
The first thing that showed up was a difference in the Command register of the
PCI configuration space at offset 0x04. The first read of this location for the
cold boot returned 0x02, but the warm reboot returned 0x06. As that bit 4 means
set bus mastering capability, it looks suspicious. The call to pci_bus_master()
should take care of this, but let us check. Please apply the attached patch and
do a cold boot to b43 so that we get the contents of the location when the DMA
error occurs.
Larry
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next prev parent reply other threads:[~2010-10-20 22:19 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-09 11:53 Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl Paul Fertser
2010-10-09 18:36 ` Paul Fertser
2010-10-09 20:37 ` Gábor Stefanik
2010-10-09 21:32 ` Paul Fertser
2010-10-09 21:37 ` Gábor Stefanik
2010-10-10 7:21 ` Paul Fertser
2010-10-10 15:39 ` Larry Finger
2010-10-10 17:03 ` Paul Fertser
2010-10-11 1:50 ` Larry Finger
2010-10-11 7:37 ` Rafał Miłecki
2010-10-13 6:58 ` PIO mode (was: Re: Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl) Paul Fertser
2010-10-17 22:35 ` PIO mode Larry Finger
2010-10-18 4:11 ` Paul Fertser
2010-10-18 19:57 ` Larry Finger
2010-10-19 0:43 ` Paul Fertser
2010-10-19 16:04 ` Larry Finger
2010-10-19 16:22 ` Paul Fertser
2010-10-19 17:02 ` Larry Finger
2010-10-20 17:37 ` Larry Finger
2010-10-20 17:54 ` Paul Fertser
2010-10-20 18:31 ` Larry Finger
2010-10-20 19:37 ` MMIO trace for "warm" boot of b43 on IdeaPad S9 (was: Re: PIO mode) Paul Fertser
2010-10-20 22:19 ` Larry Finger [this message]
2010-10-21 6:05 ` MMIO trace for "warm" boot of b43 on IdeaPad S9 Paul Fertser
2010-10-21 8:53 ` Transfer zeroes via ssh test (was: Re: PIO mode) Paul Fertser
2010-10-21 14:27 ` Larry Finger
2010-10-21 20:55 ` Michael Büsch
2010-10-10 16:50 ` Issues with 14e4:4315 on "lenovo ideapad s9" - works only after wl Gábor Stefanik
2010-10-12 22:12 ` Paul Fertser
2010-10-12 23:05 ` Paul Fertser
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