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authorLubomir Rintel <lkundrak@v3.sk>2013-12-22 11:34:22 +0100
committerStefan Richter <stefanr@s5r6.in-berlin.de>2014-01-12 18:54:38 +0100
commit8bc588e0e585bc9085df75e84d4d5635f45cf360 (patch)
tree8dc98f31ce6330b1bd8670a42f60061e94481c68 /Documentation/debugging-via-ohci1394.txt
parenta9954ce769e2c8b450b00ab2a4e208f447996b2d (diff)
firewire: ohci: Turn remote DMA support into a module parameter
This makes it possible to debug kernel over FireWire without the need to recompile it. [Stefan R: changed description from "...0" to "...N"] Cc: Dave Hansen <dave.hansen@linux.intel.com> Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Diffstat (limited to 'Documentation/debugging-via-ohci1394.txt')
-rw-r--r--Documentation/debugging-via-ohci1394.txt4
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/debugging-via-ohci1394.txt b/Documentation/debugging-via-ohci1394.txt
index 14d19449649..73473aa8d86 100644
--- a/Documentation/debugging-via-ohci1394.txt
+++ b/Documentation/debugging-via-ohci1394.txt
@@ -38,9 +38,7 @@ Drivers
The firewire-ohci driver in drivers/firewire uses filtered physical
DMA by default, which is more secure but not suitable for remote debugging.
-Compile the driver with CONFIG_FIREWIRE_OHCI_REMOTE_DMA (Kernel hacking menu:
-Remote debugging over FireWire with firewire-ohci) to get unfiltered physical
-DMA.
+Pass the remote_dma=1 parameter to the driver to get unfiltered physical DMA.
Because the firewire-ohci driver depends on the PCI enumeration to be
completed, an initialization routine which runs pretty early has been