Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=fcb71f6f034c6c4f6a3ab4a55404c95db6e32653
Commit:     fcb71f6f034c6c4f6a3ab4a55404c95db6e32653
Parent:     4ccd3329a2e51473a86547a55f9e5f98f8f65b33
Author:     FD Cami <[EMAIL PROTECTED]>
AuthorDate: Sun Jan 6 19:08:56 2008 +0100
Committer:  Jeff Garzik <[EMAIL PROTECTED]>
CommitDate: Thu Jan 10 16:53:55 2008 -0500

    Update kernel parameter document for libata DMA mode setting knobs.
    
    Signed-off-by: Jeff Garzik <[EMAIL PROTECTED]>
---
 Documentation/kernel-parameters.txt |    8 ++++++++
 1 files changed, 8 insertions(+), 0 deletions(-)

diff --git a/Documentation/kernel-parameters.txt 
b/Documentation/kernel-parameters.txt
index e5b447a..c417877 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -883,6 +883,14 @@ and is between 256 and 4096 characters. It is defined in 
the file
        lapic_timer_c2_ok       [X86-32,x86-64,APIC] trust the local apic timer 
in
                        C2 power state.
 
+       libata.dma=     [LIBATA] DMA control
+                       libata.dma=0      Disable all PATA and SATA DMA
+                       libata.dma=1      PATA and SATA Disk DMA only
+                       libata.dma=2      ATAPI (CDROM) DMA only
+                       libata.dma=4      Compact Flash DMA only 
+                       Combinations also work, so libata.dma=3 enables DMA
+                       for disks and CDROMs, but not CFs.
+
        libata.noacpi   [LIBATA] Disables use of ACPI in libata suspend/resume
                        when set.
                        Format: <int>
-
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