From: Daniel Mack <daniel@caiaq.de>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
USB list <linux-usb@vger.kernel.org>,
tiwai@suse.de, gregkh@suse.de, clemens@ladisch.de,
Kernel development list <linux-kernel@vger.kernel.org>,
chrisw@sous-sol.org, iommu@lists.linux-foundation.org,
andi@firstfloor.org, pedrib@gmail.com,
Andrew Morton <akpm@linux-foundation.org>,
dwmw2@infradead.org
Subject: Re: [alsa-devel] USB transfer_buffer allocations on 64bit systems
Date: Tue, 11 May 2010 17:05:57 +0200 [thread overview]
Message-ID: <20100511150557.GY30801@buzzloop.caiaq.de> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1005111052260.1834-100000@iolanthe.rowland.org>
On Tue, May 11, 2010 at 10:57:07AM -0400, Alan Stern wrote:
> There are no calls to any dma_sync_* routines. Daniel will have to
> check me on this, but I believe that urb->transfer_buffer is filled
> before dma_map_single() is called and it isn't touched again until
> after dma_unmap_single() (which occurs before urb's completion handler
> is called).
Yes, that's correct. Sorry fot the misleading information I gave. The
code doesn't to any weird tricks as it currently stands. It fills the
buffer, submits the URB and doesn't touch the buffer contents
afterwards.
Daniel
next prev parent reply other threads:[~2010-05-11 15:06 UTC|newest]
Thread overview: 221+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-07 9:06 USB transfer_buffer allocations on 64bit systems Daniel Mack
2010-04-07 9:06 ` Daniel Mack
[not found] ` <p2g581ef6d61004070220z1153d40ez955b356e01220848@mail.gmail.com>
2010-04-07 9:26 ` USB HID gadget driver (was: Re: USB transfer_buffer allocations on 64bit systems) Daniel Mack
2010-04-07 9:26 ` Daniel Mack
2010-04-07 14:59 ` USB transfer_buffer allocations on 64bit systems Alan Stern
2010-04-07 14:59 ` Alan Stern
2010-04-07 15:11 ` Daniel Mack
2010-04-07 15:11 ` Daniel Mack
2010-04-07 15:31 ` Greg KH
2010-04-07 15:31 ` Greg KH
2010-04-07 15:35 ` Daniel Mack
2010-04-07 15:35 ` Daniel Mack
2010-04-07 15:51 ` Greg KH
2010-04-07 15:51 ` Greg KH
[not found] ` <20100407155122.GA13974-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2010-04-07 16:04 ` Alan Stern
2010-04-07 16:04 ` Alan Stern
2010-04-08 6:09 ` Oliver Neukum
[not found] ` <201004080809.11756.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-08 11:07 ` Daniel Mack
2010-04-08 11:07 ` Daniel Mack
2010-04-07 15:55 ` Alan Stern
2010-04-07 15:55 ` Alan Stern
2010-04-07 16:16 ` Daniel Mack
2010-04-07 16:16 ` Daniel Mack
2010-04-07 16:47 ` Alan Stern
2010-04-07 16:47 ` Alan Stern
2010-04-07 17:55 ` Takashi Iwai
2010-04-07 17:55 ` Takashi Iwai
2010-04-07 17:59 ` Daniel Mack
2010-04-07 17:59 ` Daniel Mack
2010-04-07 18:06 ` Takashi Iwai
2010-04-07 18:06 ` Takashi Iwai
2010-04-07 19:13 ` Alan Stern
2010-04-07 19:13 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004071452560.5760-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 23:59 ` Robert Hancock
2010-04-07 23:59 ` Robert Hancock
2010-04-12 11:17 ` [PATCH] USB: rename usb_buffer_alloc() and usb_buffer_free() Daniel Mack
2010-04-12 11:17 ` Daniel Mack
[not found] ` <1271071045-3112-1-git-send-email-daniel-rDUAYElUppE@public.gmane.org>
2010-04-13 18:16 ` Daniel Mack
2010-04-13 18:16 ` Daniel Mack
[not found] ` <20100413181631.GT30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-13 19:27 ` Alan Stern
2010-04-13 19:27 ` Alan Stern
2010-04-13 20:26 ` Greg KH
2010-04-13 21:47 ` Daniel Mack
2010-04-13 21:47 ` Daniel Mack
2010-04-08 0:33 ` USB transfer_buffer allocations on 64bit systems Greg KH
2010-04-08 0:33 ` Greg KH
2010-04-09 0:01 ` Robert Hancock
[not found] ` <4BBE6E57.6020600-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-09 16:50 ` Sarah Sharp
2010-04-09 16:50 ` Sarah Sharp
2010-04-09 23:38 ` Robert Hancock
2010-04-09 23:38 ` Robert Hancock
2010-04-10 8:34 ` Daniel Mack
2010-04-10 8:34 ` [alsa-devel] " Daniel Mack
2010-04-10 17:02 ` Robert Hancock
2010-04-12 18:56 ` Sarah Sharp
2010-04-12 20:39 ` Robert Hancock
2010-04-12 20:39 ` Robert Hancock
2010-04-12 20:58 ` Sarah Sharp
2010-04-07 17:52 ` Takashi Iwai
2010-04-07 17:52 ` Takashi Iwai
2010-04-07 15:46 ` Alan Stern
2010-04-07 15:46 ` Alan Stern
2010-04-08 6:12 ` Oliver Neukum
[not found] ` <201004080812.04419.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-08 16:59 ` Alan Stern
2010-04-08 16:59 ` Alan Stern
2010-04-08 21:24 ` Oliver Neukum
2010-04-08 22:20 ` Alan Stern
2010-04-08 22:20 ` Alan Stern
2010-04-09 6:04 ` Oliver Neukum
[not found] ` <201004090804.36213.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-09 14:41 ` Alan Stern
2010-04-09 14:41 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004091033150.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 14:50 ` Oliver Neukum
2010-04-09 14:50 ` Oliver Neukum
[not found] ` <201004091650.31488.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-09 15:15 ` Alan Stern
2010-04-09 15:15 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004091114500.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 20:51 ` Oliver Neukum
2010-04-09 20:51 ` Oliver Neukum
2010-04-09 21:21 ` Alan Stern
2010-04-09 21:21 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004071036060.1779-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-07 16:54 ` Oliver Neukum
2010-04-07 16:54 ` Oliver Neukum
[not found] ` <201004071854.55530.oliver-GvhC2dPhHPQdnm+yROfE0A@public.gmane.org>
2010-04-07 17:00 ` Daniel Mack
2010-04-07 17:00 ` Daniel Mack
2010-04-07 23:55 ` Robert Hancock
2010-04-07 23:55 ` Robert Hancock
[not found] ` <4BBD1B6F.3000205-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2010-04-08 2:10 ` Alan Stern
2010-04-08 2:10 ` Alan Stern
2010-04-08 7:30 ` Daniel Mack
2010-04-08 7:30 ` Daniel Mack
[not found] ` <20100408073041.GO30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-08 16:57 ` Alan Stern
2010-04-08 16:57 ` Alan Stern
2010-04-08 17:17 ` Pedro Ribeiro
2010-04-08 18:17 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1004081245330.1720-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-08 23:13 ` Pedro Ribeiro
2010-04-08 23:13 ` Pedro Ribeiro
2010-04-09 16:01 ` Alan Stern
2010-04-09 16:01 ` Alan Stern
2010-04-09 18:09 ` Daniel Mack
[not found] ` <20100409180942.GK30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-09 18:19 ` Pedro Ribeiro
2010-04-09 18:19 ` Pedro Ribeiro
[not found] ` <w2r74fd948d1004091119j9f33d8a6kc1824d9243abf38b-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-09 19:34 ` Alan Stern
2010-04-09 19:34 ` Alan Stern
2010-04-09 20:14 ` Daniel Mack
2010-04-09 20:14 ` Daniel Mack
[not found] ` <Pine.LNX.4.44L0.1004091529240.1852-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-04-09 20:25 ` [LKML] " Konrad Rzeszutek Wilk
2010-04-09 20:25 ` Konrad Rzeszutek Wilk
[not found] ` <20100409202533.GA8983-6K5HmflnPlqSPmnEAIUT9EEOCMrvLtNR@public.gmane.org>
2010-04-09 21:23 ` Alan Stern
2010-04-09 21:23 ` Alan Stern
2010-04-09 22:11 ` Robert Hancock
2010-04-12 10:48 ` Daniel Mack
2010-04-12 10:48 ` Daniel Mack
2010-04-12 12:06 ` Pedro Ribeiro
2010-04-10 12:49 ` Daniel Mack
2010-04-10 12:49 ` Daniel Mack
[not found] ` <20100410124912.GP30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-10 13:21 ` Pedro Ribeiro
2010-04-10 13:21 ` Pedro Ribeiro
2010-04-12 8:59 ` Andi Kleen
2010-04-12 8:59 ` Andi Kleen
2010-04-12 11:14 ` Daniel Mack
2010-04-12 11:14 ` Daniel Mack
[not found] ` <20100412111439.GU30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-12 11:53 ` Andi Kleen
2010-04-12 11:53 ` Andi Kleen
2010-04-12 12:11 ` Pedro Ribeiro
[not found] ` <q2z74fd948d1004120511hebf19eaauc41ee9ed25dea19e-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-12 12:12 ` Andi Kleen
2010-04-12 12:12 ` Andi Kleen
2010-04-12 12:32 ` Daniel Mack
2010-04-12 12:47 ` Andi Kleen
2010-04-12 12:54 ` Daniel Mack
2010-04-12 12:54 ` Daniel Mack
2010-04-12 15:43 ` Andi Kleen
[not found] ` <20100412154323.GP18855-qrUzlfsMFqo/4alezvVtWx2eb7JE58TQ@public.gmane.org>
2010-04-12 16:17 ` Alan Stern
2010-04-12 16:17 ` Alan Stern
2010-04-12 16:29 ` Andi Kleen
2010-04-12 16:57 ` Alan Stern
2010-04-12 16:57 ` Alan Stern
2010-04-12 17:15 ` Daniel Mack
2010-04-12 17:15 ` Daniel Mack
[not found] ` <20100412171507.GB30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-12 17:22 ` Andi Kleen
2010-04-12 17:22 ` Andi Kleen
2010-04-12 17:56 ` Daniel Mack
2010-04-12 17:56 ` Daniel Mack
2010-04-12 17:52 ` [LKML] " Konrad Rzeszutek Wilk
2010-04-12 17:52 ` Konrad Rzeszutek Wilk
2010-04-13 18:22 ` Daniel Mack
2010-04-13 18:22 ` Daniel Mack
[not found] ` <20100413182233.GR30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-13 23:46 ` Pedro Ribeiro
2010-04-13 23:46 ` Pedro Ribeiro
2010-04-14 10:09 ` Daniel Mack
2010-04-14 10:09 ` Daniel Mack
2010-04-14 10:47 ` Pedro Ribeiro
2010-04-14 11:02 ` Pedro Ribeiro
2010-04-14 13:18 ` [LKML] " Konrad Rzeszutek Wilk
[not found] ` <t2w74fd948d1004140347k3447bffapb73856eacddfde55-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-04-14 14:08 ` Alan Stern
2010-04-14 14:08 ` Alan Stern
2010-04-14 16:36 ` Daniel Mack
2010-04-14 16:36 ` Daniel Mack
[not found] ` <20100414163637.GV30807-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-04-14 17:21 ` Pedro Ribeiro
2010-04-14 17:21 ` Pedro Ribeiro
2010-04-14 18:23 ` Alan Stern
2010-04-14 18:27 ` Pedro Ribeiro
2010-04-14 18:53 ` Alan Stern
2010-04-15 7:35 ` Daniel Mack
2010-04-15 7:35 ` Daniel Mack
2010-04-14 18:15 ` Alan Stern
2010-04-14 18:36 ` David Woodhouse
2010-04-14 21:12 ` Pedro Ribeiro
2010-04-14 22:25 ` Chris Wright
2010-04-14 22:56 ` Pedro Ribeiro
2010-04-14 23:37 ` Chris Wright
2010-04-15 1:20 ` Pedro Ribeiro
2010-04-15 15:20 ` Alan Stern
2010-04-20 0:16 ` Pedro Ribeiro
2010-05-07 7:48 ` Daniel Mack
2010-05-07 7:48 ` Daniel Mack
2010-05-07 9:47 ` Clemens Ladisch
2010-05-07 9:47 ` [alsa-devel] " Clemens Ladisch
2010-05-07 10:24 ` Daniel Mack
2010-05-07 10:24 ` [alsa-devel] " Daniel Mack
2010-05-07 14:51 ` Alan Stern
2010-05-07 14:51 ` Alan Stern
2010-05-10 2:50 ` FUJITA Tomonori
2010-05-10 9:21 ` David Woodhouse
2010-05-10 9:21 ` [alsa-devel] " David Woodhouse
[not found] ` <1273483265.372.3383.camel-uXGAPMMVk8bAQYKIod7YupZV94DADvEd@public.gmane.org>
2010-05-10 14:58 ` Alan Stern
2010-05-10 14:58 ` Alan Stern
[not found] ` <Pine.LNX.4.44L0.1005101049100.1626-100000-IYeN2dnnYyZXsRXLowluHWD2FQJk+8+b@public.gmane.org>
2010-05-11 1:06 ` FUJITA Tomonori
2010-05-11 1:06 ` FUJITA Tomonori
[not found] ` <20100511100637D.fujita.tomonori-Zyj7fXuS5i5L9jVzuh4AOg@public.gmane.org>
2010-05-11 14:00 ` Alan Stern
2010-05-11 14:00 ` Alan Stern
2010-05-11 14:22 ` FUJITA Tomonori
2010-05-11 14:24 ` Konrad Rzeszutek Wilk
2010-05-11 14:38 ` FUJITA Tomonori
2010-05-11 15:04 ` Alan Stern
2010-05-11 15:04 ` Alan Stern
2010-05-11 15:34 ` FUJITA Tomonori
2010-05-11 16:06 ` Alan Stern
2010-05-11 16:09 ` Daniel Mack
2010-05-11 16:48 ` Pedro Ribeiro
2010-05-11 17:10 ` Daniel Mack
2010-05-11 17:32 ` Pedro Ribeiro
2010-05-11 17:38 ` Daniel Mack
2010-05-12 23:50 ` Pedro Ribeiro
2010-05-13 9:36 ` Daniel Mack
2010-05-14 0:17 ` Pedro Ribeiro
2010-05-11 14:57 ` Alan Stern
2010-05-11 15:05 ` Daniel Mack [this message]
[not found] ` <20100507102408.GM30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-05-10 14:31 ` Konrad Rzeszutek Wilk
2010-05-10 14:31 ` Konrad Rzeszutek Wilk
[not found] ` <4BE3E1B9.5020602-P6GI/4k7KOmELgA04lAiVw@public.gmane.org>
2010-05-07 11:42 ` Oliver Neukum
2010-05-07 11:42 ` Oliver Neukum
[not found] ` <201005071342.34923.oneukum-l3A5Bk7waGM@public.gmane.org>
2010-05-07 11:47 ` Oliver Neukum
2010-05-07 11:47 ` Oliver Neukum
2010-05-07 11:58 ` Daniel Mack
2010-05-07 11:58 ` [alsa-devel] " Daniel Mack
[not found] ` <20100507115810.GN30801-ahpEBR4enfnCULTFXS99ULNAH6kLmebB@public.gmane.org>
2010-05-07 14:45 ` Alan Stern
2010-05-07 14:45 ` Alan Stern
2010-04-14 18:38 ` Chris Wright
2010-04-14 20:29 ` Alan Stern
2010-04-14 21:01 ` Konrad Rzeszutek Wilk
2010-04-14 21:12 ` Pedro Ribeiro
2010-04-15 1:50 ` Alan Stern
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20100511150557.GY30801@buzzloop.caiaq.de \
--to=daniel@caiaq.de \
--cc=akpm@linux-foundation.org \
--cc=andi@firstfloor.org \
--cc=chrisw@sous-sol.org \
--cc=clemens@ladisch.de \
--cc=dwmw2@infradead.org \
--cc=fujita.tomonori@lab.ntt.co.jp \
--cc=gregkh@suse.de \
--cc=iommu@lists.linux-foundation.org \
--cc=konrad.wilk@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-usb@vger.kernel.org \
--cc=pedrib@gmail.com \
--cc=stern@rowland.harvard.edu \
--cc=tiwai@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.