From fc44ff0ae9f2aa20b64c4e63ab4614156df80240 Mon Sep 17 00:00:00 2001 From: Ben Walker Date: Tue, 1 Mar 2022 11:25:48 -0700 Subject: dmaengine: Document dmaengine_prep_dma_memset Document this function to make clear the expected behavior of the 'value' parameter. It was intended to match the behavior of POSIX memset as laid out here: https://lore.kernel.org/dmaengine/YejrA5ZWZ3lTRO%2F1@matsya/ Signed-off-by: Ben Walker Link: https://lore.kernel.org/r/20220301182551.883474-2-benjamin.walker@intel.com Signed-off-by: Vinod Koul --- Documentation/driver-api/dmaengine/provider.rst | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'Documentation/driver-api') diff --git a/Documentation/driver-api/dmaengine/provider.rst b/Documentation/driver-api/dmaengine/provider.rst index d3fa80e333b1..1e0f1f85d10e 100644 --- a/Documentation/driver-api/dmaengine/provider.rst +++ b/Documentation/driver-api/dmaengine/provider.rst @@ -206,6 +206,12 @@ Currently, the types available are: - The device is able to perform parity check using RAID6 P+Q algorithm against a memory buffer. +- DMA_MEMSET + + - The device is able to fill memory with the provided pattern + + - The pattern is treated as a single byte signed value. + - DMA_INTERRUPT - The device is able to trigger a dummy transfer that will -- cgit v1.2.3-59-g8ed1b