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| author | Lubomir Rintel <lkundrak@v3.sk> | 2013-12-22 11:34:22 +0100 |
|---|---|---|
| committer | Stefan Richter <stefanr@s5r6.in-berlin.de> | 2014-01-12 18:54:38 +0100 |
| commit | 8bc588e0e585bc9085df75e84d4d5635f45cf360 (patch) | |
| tree | 8dc98f31ce6330b1bd8670a42f60061e94481c68 /Documentation/debugging-via-ohci1394.txt | |
| parent | a9954ce769e2c8b450b00ab2a4e208f447996b2d (diff) | |
| download | linux-8bc588e0e585bc9085df75e84d4d5635f45cf360.tar.gz linux-8bc588e0e585bc9085df75e84d4d5635f45cf360.tar.bz2 linux-8bc588e0e585bc9085df75e84d4d5635f45cf360.zip | |
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.txt | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/Documentation/debugging-via-ohci1394.txt b/Documentation/debugging-via-ohci1394.txt index 14d194496490..73473aa8d861 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 |