summaryrefslogtreecommitdiffstats
path: root/Documentation/usb
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 12:11:02 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2011-10-25 12:11:02 +0200
commit59e52534172d845ebffb0d7e85fc56fb7b857051 (patch)
tree49552e03f1bdb413cd8b5f7542e91770688d7047 /Documentation/usb
parent73692d9bb58ecc2fa73f4b2bfcf6eadaa6d49a26 (diff)
parent0d89e54c8249645404283436d952afc261a04e1e (diff)
downloadop-kernel-dev-59e52534172d845ebffb0d7e85fc56fb7b857051.zip
op-kernel-dev-59e52534172d845ebffb0d7e85fc56fb7b857051.tar.gz
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (59 commits) MAINTAINERS: linux-m32r is moderated for non-subscribers linux@lists.openrisc.net is moderated for non-subscribers Drop default from "DM365 codec select" choice parisc: Kconfig: cleanup Kernel page size default Kconfig: remove redundant CONFIG_ prefix on two symbols cris: remove arch/cris/arch-v32/lib/nand_init.S microblaze: add missing CONFIG_ prefixes h8300: drop puzzling Kconfig dependencies MAINTAINERS: microblaze-uclinux@itee.uq.edu.au is moderated for non-subscribers tty: drop superfluous dependency in Kconfig ARM: mxc: fix Kconfig typo 'i.MX51' Fix file references in Kconfig files aic7xxx: fix Kconfig references to READMEs Fix file references in drivers/ide/ thinkpad_acpi: Fix printk typo 'bluestooth' bcmring: drop commented out line in Kconfig btmrvl_sdio: fix typo 'btmrvl_sdio_sd6888' doc: raw1394: Trivial typo fix CIFS: Don't free volume_info->UNC until we are entirely done with it. treewide: Correct spelling of successfully in comments ...
Diffstat (limited to 'Documentation/usb')
-rw-r--r--Documentation/usb/dma.txt6
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/usb/dma.txt b/Documentation/usb/dma.txt
index 84ef865..444651e 100644
--- a/Documentation/usb/dma.txt
+++ b/Documentation/usb/dma.txt
@@ -7,7 +7,7 @@ API OVERVIEW
The big picture is that USB drivers can continue to ignore most DMA issues,
though they still must provide DMA-ready buffers (see
-Documentation/PCI/PCI-DMA-mapping.txt). That's how they've worked through
+Documentation/DMA-API-HOWTO.txt). That's how they've worked through
the 2.4 (and earlier) kernels.
OR: they can now be DMA-aware.
@@ -57,7 +57,7 @@ and effects like cache-trashing can impose subtle penalties.
force a consistent memory access ordering by using memory barriers. It's
not using a streaming DMA mapping, so it's good for small transfers on
systems where the I/O would otherwise thrash an IOMMU mapping. (See
- Documentation/PCI/PCI-DMA-mapping.txt for definitions of "coherent" and
+ Documentation/DMA-API-HOWTO.txt for definitions of "coherent" and
"streaming" DMA mappings.)
Asking for 1/Nth of a page (as well as asking for N pages) is reasonably
@@ -88,7 +88,7 @@ WORKING WITH EXISTING BUFFERS
Existing buffers aren't usable for DMA without first being mapped into the
DMA address space of the device. However, most buffers passed to your
driver can safely be used with such DMA mapping. (See the first section
-of Documentation/PCI/PCI-DMA-mapping.txt, titled "What memory is DMA-able?")
+of Documentation/DMA-API-HOWTO.txt, titled "What memory is DMA-able?")
- When you're using scatterlists, you can map everything at once. On some
systems, this kicks in an IOMMU and turns the scatterlists into single
OpenPOWER on IntegriCloud