path: root/Documentation
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authorAlexandre Bounine <>2016-09-01 16:15:15 -0700
committerLinus Torvalds <>2016-09-01 17:52:02 -0700
commit1e1011af7a5725141aa4c8d30132acd93fe3da4e (patch)
tree8fa15e3208c781f06f7712448e9705fc79e0f7a9 /Documentation
parent735f2770a770156100f534646158cb58cb8b2939 (diff)
rapidio/documentation/mport_cdev: add missing parameter description
Add missing description for rio_mport_cdev driver parameter 'dma_timeout'. This patch is applicable to kernel versions starting from v4.6. Link: Signed-off-by: Alexandre Bounine <> Cc: Matt Porter <> Cc: Andre van Herk <> Cc: Barry Wood <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'Documentation')
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/rapidio/mport_cdev.txt b/Documentation/rapidio/mport_cdev.txt
index 6e491a662461..a53f786ee2e9 100644
--- a/Documentation/rapidio/mport_cdev.txt
+++ b/Documentation/rapidio/mport_cdev.txt
@@ -80,6 +80,10 @@ functionality of their platform when planning to use this driver:
III. Module parameters
+- 'dma_timeout' - DMA transfer completion timeout (in msec, default value 3000).
+ This parameter set a maximum completion wait time for SYNC mode DMA
+ transfer requests and for RIO_WAIT_FOR_ASYNC ioctl requests.
- 'dbg_level' - This parameter allows to control amount of debug information
generated by this device driver. This parameter is formed by set of
bit masks that correspond to the specific functional blocks.