From: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Greg KH <greg@kroah.com>, David Daney <david.daney@cavium.com>,
Alex Smith <alex.smith@imgtec.com>,
Linux-MIPS <linux-mips@linux-mips.org>,
linux-usb <linux-usb@vger.kernel.org>,
Aaro Koskinen <aaro.koskinen@iki.fi>
Subject: Re: [PATCH 2/2 resend v2] USB: host: Introduce flag to enable use of 64-bit dma_mask for ehci-platform
Date: Wed, 7 Jan 2015 12:12:55 +0100 [thread overview]
Message-ID: <20150107111255.GH4194@alberich> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1501061048230.1602-100000@iolanthe.rowland.org>
On Tue, Jan 06, 2015 at 10:49:40AM -0500, Alan Stern wrote:
> On Tue, 6 Jan 2015, Andreas Herrmann wrote:
>
> > ehci-octeon driver used a 64-bit dma_mask. With removal of ehci-octeon
> > and usage of ehci-platform ehci dma_mask is now limited to 32 bits
> > (coerced in ehci_platform_probe).
> >
> > Provide a flag in ehci platform data to allow use of 64 bits for
> > dma_mask.
> >
> > Cc: David Daney <david.daney@cavium.com>
> > Cc: Alex Smith <alex.smith@imgtec.com>
> > Cc: Alan Stern <stern@rowland.harvard.edu>
> > Signed-off-by: Andreas Herrmann <andreas.herrmann@caviumnetworks.com>
> > Tested-by: Aaro Koskinen <aaro.koskinen@iki.fi>
>
> Acked-by: Alan Stern <stern@rowland.harvard.edu>
>
> Is something like this also needed for ohci-platform?
No, I don't think so.
> Or are all OHCI implementations restricted to 32-bit DMA masks?
AFAIK OHCI supports only 32-bit memory addressing.
> Alan Stern
Andreas
next prev parent reply other threads:[~2015-01-07 11:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-12-15 13:26 [PATCH 0/2 resend] USB: host: Misc patches to remove hard-coded octeon platform information Andreas Herrmann
2014-12-15 13:28 ` [PATCH 1/2 resend] USB: host: Remove hard-coded octeon platform information for ehci/ohci Andreas Herrmann
2014-12-15 16:04 ` Ralf Baechle
2014-12-15 13:30 ` [PATCH 2/2 resend] USB: host: Introduce flag to enable use of 64-bit dma_mask for ehci-platform Andreas Herrmann
2014-12-15 16:36 ` [PATCH 0/2 resend] USB: host: Misc patches to remove hard-coded octeon platform information Greg KH
2015-01-06 12:46 ` [PATCH 0/2 resend v2] " Andreas Herrmann
2015-01-06 12:48 ` [PATCH 1/2 resend v2] USB: host: Remove hard-coded octeon platform information for ehci/ohci Andreas Herrmann
2015-01-06 12:50 ` [PATCH 2/2 resend v2] USB: host: Introduce flag to enable use of 64-bit dma_mask for ehci-platform Andreas Herrmann
2015-01-06 15:49 ` Alan Stern
2015-01-07 11:12 ` Andreas Herrmann [this message]
2015-01-09 20:30 ` Greg KH
2015-01-12 15:05 ` [PATCH resend v3] " Andreas Herrmann
2015-01-06 12:52 ` [PATCH 0/2 resend v2] USB: host: Misc patches to remove hard-coded octeon platform information Andreas Herrmann
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