From: Stefan Wahren <stefan.wahren@i2se.com>
To: Robin Murphy <robin.murphy@arm.com>
Cc: "Johan Hovold" <johan@kernel.org>,
"Christoph Hellwig" <hch@lst.de>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>,
"Andreas Färber" <afaerber@suse.de>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
"Alan Stern" <stern@rowland.harvard.edu>,
stable <stable@vger.kernel.org>,
"Sricharan R" <sricharan@codeaurora.org>,
"Eric Anholt" <eric@anholt.net>
Subject: Re: [PATCH v3] dma-mapping: skip USB devices when configuring DMA during probe
Date: Fri, 11 Aug 2017 08:02:32 +0200 [thread overview]
Message-ID: <2bc62b62-9021-2e55-ac2d-168d9ee70d19@i2se.com> (raw)
In-Reply-To: <20170808180310.GF21342@localhost>
Hi Robin,
Am 08.08.2017 um 20:03 schrieb Johan Hovold:
> On Sat, Aug 05, 2017 at 10:38:07AM +0200, Christoph Hellwig wrote:
>> I think the root problem is that the code added by
>> " of/acpi: Configure dma operations at probe time for platform/amba/pci bus
>> devices"
>>
>> is completely bogus and needs to be reverted. We can't simply iterate
>> over all devices in the system and set up dma for them. We'll need
>> to ask the firmware / OF what root port this applies to and only
>> apply it to those buses.
> I'm afraid I haven't had time to look any more at this, and now I'll be
> offline for the next two weeks.
>
> It sounded like Robin was working on a fix for the broken DMA-mask on
> RPI3 and that should address Hans's ethernet regression too even if we
> ultimately need to fix dma_configure() as well.
can you confirm that DMA-mask on RPI3 is broken? Why?
>
> Thanks,
> Johan
prev parent reply other threads:[~2017-08-11 6:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-03 15:52 Johan Hovold
2017-08-03 16:07 ` Greg Kroah-Hartman
2017-08-03 16:23 ` Johan Hovold
2017-08-05 8:38 ` Christoph Hellwig
2017-08-08 18:03 ` Johan Hovold
2017-08-11 6:02 ` Stefan Wahren [this message]
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