On Sun, 6 Jan 2008 13:36:09 +0000
Alan Cox <[EMAIL PROTECTED]> wrote:

> On Sun, 6 Jan 2008 08:03:31 +0300
> > > For now you can boot with libata.dma=1 to select DMA on disks but
> > > not CD
> > 
> > Great, but why isn't this in the documentation?
> 
> Send patches

patch attached.

Description : Add libata.dma= to Documentation/kernel-parameters.txt

Found documentation in :
http://www.mail-archive.com/linux-ide%40vger.kernel.org/msg09849.html
http://www.redhat.com/archives/fedora-extras-commits/2007-October/msg04568.html

Signed-off-by: François Cami <[EMAIL PROTECTED]>
diff -rU2 linux-2.6.24-rc6/Documentation/kernel-parameters.txt 
linux-2.6.24-rc6-mine/Documentation/kernel-parameters.txt
--- linux-2.6.24-rc6/Documentation/kernel-parameters.txt        2008-01-06 
15:58:54.000000000 +0100
+++ linux-2.6.24-rc6-mine/Documentation/kernel-parameters.txt   2008-01-06 
16:11:20.000000000 +0100
@@ -883,4 +883,11 @@
                        C2 power state.
 
+       libata.dma=     [LIBATA] DMA control
+                       libata.dma=0      Disable all PATA DMA like old IDE
+                       libata.dma=1      Disk DMA only
+                       libata.dma=2      ATAPI DMA only
+                       libata.dma=3      CF DMA only 
+                       libata.dma=0,1,3  Combinations also work.
+
        libata.noacpi   [LIBATA] Disables use of ACPI in libata suspend/resume
                        when set.

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