[RFC PATCH 0/4] dmaengine: memset clarifications and fixes

From: Ben Walker <benjamin.walker@intel.com>
To: vkoul@kernel.org
Cc: dmaengine@vger.kernel.org, ludovic.desroches@microchip.com,
	okaya@kernel.org, dave.jiang@intel.com,
	Ben Walker <benjamin.walker@intel.com>
Subject: [RFC PATCH 0/4] dmaengine: memset clarifications and fixes
Date: Fri, 28 Jan 2022 11:39:44 -0700	[thread overview]
Message-ID: <20220128183948.3924558-1-benjamin.walker@intel.com> (raw)

The following contains a clarification for the behavior of the 'value'
parameter in the memset operation. It is intended to be a single byte
pattern as laid out here:

https://lore.kernel.org/dmaengine/YejrA5ZWZ3lTRO%2F1@matsya/

Then I'm attempting to fix all places it is currently used. But note
that I do not have access to this hardware and cannot test it. We'll
really need a maintainer to take a look at each of these to verify that
the changes are correct.

Ben Walker (4):
  dmaengine: Document dmaengine_prep_dma_memset
  dmaengine: at_hdmac: In atc_prep_dma_memset, treat value as a single
    byte
  dmaengine: at_xdmac: In at_xdmac_prep_dma_memset, treat value as a
    single byte
  dmaengine: hidma: In hidma_prep_dma_memset treat value as a single
    byte

 drivers/dma/at_hdmac.c    | 10 +++++++++-
 drivers/dma/at_xdmac.c    |  9 ++++++++-
 drivers/dma/qcom/hidma.c  | 13 ++++++++++++-
 include/linux/dmaengine.h |  8 ++++++++
 4 files changed, 37 insertions(+), 3 deletions(-)

-- 
2.33.1