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authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>2018-03-26 14:50:25 +0300
committerJonathan Corbet <corbet@lwn.net>2018-03-26 19:40:18 +0300
commita6cd7714c0bd53f72d3ed61acbb86b07bcf6c693 (patch)
tree4318b5196993c7e40a825c529afc785962fd83de /Documentation/driver-api
parent738947f0f3cf77baeab5176a2eb50bf9dccc6236 (diff)
downloadlinux-a6cd7714c0bd53f72d3ed61acbb86b07bcf6c693.tar.xz
dmaengine: Add note to dmatest documentation about supported channels
The documentation is not so clear for newbies in a sense of what type of the channels are supported by it. Clarify this by adding a note at the preamble of the documentation. Reported-by: "Zhu, Tony" <tony.zhu@intel.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-By: Vinod Koul <vinod.koul@intel.com> Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/driver-api')
-rw-r--r--Documentation/driver-api/dmaengine/dmatest.rst5
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/driver-api/dmaengine/dmatest.rst b/Documentation/driver-api/dmaengine/dmatest.rst
index 3922c0a3f0c0..9b0dcdb7b7a8 100644
--- a/Documentation/driver-api/dmaengine/dmatest.rst
+++ b/Documentation/driver-api/dmaengine/dmatest.rst
@@ -6,6 +6,11 @@ Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This small document introduces how to test DMA drivers using dmatest module.
+.. note::
+ The test suite works only on the channels that have at least one
+ capability of the following: DMA_MEMCPY (memory-to-memory), DMA_MEMSET
+ (const-to-memory or memory-to-memory, when emulated), DMA_XOR, DMA_PQ.
+
Part 1 - How to build the test module
=====================================