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From: Greg KH <greg@kroah.com>
To: Robert Morell <rmorell@nvidia.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>,
	Greg Kroah-Hartman <gregkh@suse.de>,
	Benoit Goby <benoit@android.com>,
	Alan Stern <stern@rowland.harvard.edu>,
	Sarah Sharp <sarah.a.sharp@linux.intel.com>,
	Matthew Wilcox <willy@linux.intel.com>,
	Ming Lei <tom.leiming@gmail.com>,
	Jacob Pan <jacob.jun.pan@intel.com>,
	Oliver Neukum <oliver@neukum.org>,
	Olof Johansson <olof@lixom.net>,
	Erik Gilling <konkers@android.com>,
	Colin Cross <ccross@android.com>,
	linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-tegra@vger.kernel.org
Subject: Re: [PATCH 1/2] USB: HCD: Add driver hooks for (un)?map_urb_for_dma
Date: Sat, 22 Jan 2011 19:46:53 -0800	[thread overview]
Message-ID: <20110123034653.GA20186@kroah.com> (raw)
In-Reply-To: <1295559715-14264-2-git-send-email-rmorell@nvidia.com>

On Thu, Jan 20, 2011 at 01:41:54PM -0800, Robert Morell wrote:
> Provide optional hooks for the host controller driver to override the
> default DMA mapping and unmapping routines.  In general, these shouldn't
> be necessary unless the host controller has special DMA requirements,
> such as alignment contraints.  If these are not specified, the
> general usb_hcd_(un)?map_urb_for_dma functions will be used instead.
> Also, pass the status to unmap_urb_for_dma so it can know whether the
> DMA buffer has been overwritten.
> 
> Finally, add a flag to be used by these implementations if they
> allocated a temporary buffer so it can be freed properly when unmapping.
> 
> Signed-off-by: Robert Morell <rmorell@nvidia.com>

I'd like to get an ACK from Alan before applying this one, and ideally
also from David and Sarah as they know the HCD code also.

Anyone?

thanks,

greg k-h

  reply	other threads:[~2011-01-23  8:19 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-12-17 21:58 [RFC] Align tegra-ehci DMA transfers to 32B Robert Morell
2010-12-17 21:58 ` [PATCH 1/2] USB: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2010-12-17 21:58 ` [PATCH 2/2] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2010-12-17 22:35   ` Greg KH
2010-12-17 22:42     ` rmorell
2010-12-17 23:09       ` Greg KH
2010-12-17 23:17         ` Oliver Neukum
2010-12-17 23:35           ` Greg KH
2010-12-17 23:50             ` rmorell
2010-12-17 23:40         ` rmorell
2010-12-18  0:37           ` Greg KH
2010-12-18  1:29             ` rmorell
2010-12-17 22:32 ` [RFC] Align tegra-ehci DMA transfers to 32B Greg KH
2010-12-17 22:44   ` rmorell
2010-12-17 23:07     ` Greg KH
2010-12-17 23:07     ` David Brownell
2010-12-18  1:49 ` [PATCH v2] " Robert Morell
2010-12-19 21:38   ` [PATCH] " Robert Morell
2011-01-06 23:20     ` [PATCH v4] " Robert Morell
2011-01-20 21:41       ` [PATCH v5] " Robert Morell
2011-01-27  3:06         ` [PATCH v6] " Robert Morell
2011-01-27  3:06         ` [PATCH 1/3] USB: HCD: Add usb_hcd prefix to exported functions Robert Morell
2011-01-27 16:01           ` Alan Stern
2011-01-27  3:06         ` [PATCH 2/3] USB: HCD: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2011-01-27 16:01           ` Alan Stern
2011-01-27  3:06         ` [PATCH 3/3] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2011-02-04 19:49           ` Greg KH
     [not found]             ` <20110204194954.GA25180-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2011-02-04 20:14               ` Olof Johansson
2011-02-04 20:14                 ` Olof Johansson
     [not found]                 ` <AANLkTinRtch4Pvr3GLz5wZU2xkG3FMJxxzSNAdParA7j-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2011-02-04 20:16                   ` Greg KH
2011-02-04 20:16                     ` Greg KH
     [not found]                     ` <20110204201616.GA12482-l3A5Bk7waGM@public.gmane.org>
2011-02-04 20:26                       ` rmorell-DDmLM1+adcrQT0dZR+AlfA
2011-02-04 20:26                         ` rmorell
     [not found]                         ` <20110204202640.GC1744-f3YH7lVHJt/FT5IIyIEb6QC/G2K4zDHf@public.gmane.org>
2011-02-04 20:35                           ` Greg KH
2011-02-04 20:35                             ` Greg KH
2011-01-20 21:41       ` [PATCH 1/2] USB: HCD: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2011-01-23  3:46         ` Greg KH [this message]
2011-01-24 16:32         ` Alan Stern
2011-01-20 21:41       ` [PATCH 2/2] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2011-01-24 16:36         ` Alan Stern
2011-01-24 22:53           ` rmorell
2011-01-25  2:59             ` Alan Stern
2011-01-06 23:20     ` [PATCH v4 1/2] USB: HCD: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2011-01-06 23:20     ` [PATCH v4 2/2] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2010-12-19 21:38   ` [PATCH 1/2] USB: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2010-12-19 21:38   ` [PATCH 2/2] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2010-12-19 21:57     ` Oliver Neukum
2010-12-18  1:49 ` [PATCH v2 1/2] USB: Add driver hooks for (un)?map_urb_for_dma Robert Morell
2010-12-18 17:51   ` Greg KH
2010-12-18  1:49 ` [PATCH v2 2/2] USB: ehci: tegra: Align DMA transfers to 32 bytes Robert Morell
2010-12-18 17:52   ` Greg KH

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