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| author | Vinod Koul <vinod.koul@intel.com> | 2014-12-07 20:48:01 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-12-22 10:04:22 +0300 |
| commit | 6269591b989878992be443f77caa9ca4738dfaaf (patch) | |
| tree | 86924d228bcc9f3d22d9d9c9ef73c2c079166ccf /Documentation/dmaengine/provider.txt | |
| parent | 6c04cd4f579cc365e7904aa92c48b9a9f8c768b5 (diff) | |
| download | linux-6269591b989878992be443f77caa9ca4738dfaaf.tar.xz | |
Documentation: dmaengine: clarify dma_slave_config expectations
dma_slave_config is expected to be set for slave operations Only, not for
memcpy ones
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'Documentation/dmaengine/provider.txt')
| -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 2c391cfe37eb..05d2280190f1 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 |