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| -rw-r--r-- | Documentation/dmaengine/provider.txt | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/dmaengine/provider.txt b/Documentation/dmaengine/provider.txt index 2c391cf..05d2280 100644 --- a/Documentation/dmaengine/provider.txt +++ b/Documentation/dmaengine/provider.txt @@ -310,6 +310,10 @@ supported. - Even though that structure contains a direction field, this field is deprecated in favor of the direction argument given to the prep_* functions + - This call is mandatory for slave operations only. This should NOT be + set or expected to be set for memcpy operations. + If a driver support both, it should use this call for slave + operations only and not for memcpy ones. * device_pause - Pauses a transfer on the channel |
