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[00/11] dmaengine: kill off dma_slave_config->slave_id

Message ID 20211115085403.360194-1-arnd@kernel.org (mailing list archive)
Headers show
Series dmaengine: kill off dma_slave_config->slave_id | expand

Message

Arnd Bergmann Nov. 15, 2021, 8:53 a.m. UTC 
From: Arnd Bergmann <arnd@arndb.de>

I recently came across some new uses of the 'slave_id' field that
I had (almost) removed a few years ago. There are no legitimate
uses of this field in the kernel, only a few stale references and
two drivers that abuse the field as a side-channel between the
dmaengine driver and its client.

Let's change the xilinx and qualcomm drivers to use the documented
side-channel (peripheral_data) instead, and remove the remnants of
it to prevent new users from coming in.

As the last patch in the series depends on all the others, it would
be nice have everything merged into the dmaengine tree for v5.17.

       Arnd

Arnd Bergmann (11):
  ASoC: dai_dma: remove slave_id field
  spi: pic32: stop setting dma_config->slave_id
  mmc: bcm2835: stop setting chan_config->slave_id
  dmaengine: shdma: remove legacy slave_id parsing
  dmaengine: pxa/mmp: stop referencing config->slave_id
  dmaengine: sprd: stop referencing config->slave_id
  dmaengine: qcom-adm: stop abusing slave_id config
  dmaengine: xilinx_dpdma: stop using slave_id field
  dmaengine: tegra20-apb: stop checking config->slave_id
  staging: ralink-gdma: stop using slave_id config
  dmaengine: remove slave_id config field

 drivers/dma/mmp_pdma.c                    |  6 ---
 drivers/dma/pxa_dma.c                     |  7 ---
 drivers/dma/qcom/qcom_adm.c               | 56 ++++++++++++++++++++---
 drivers/dma/sh/shdma-base.c               |  8 ----
 drivers/dma/sprd-dma.c                    |  3 --
 drivers/dma/tegra20-apb-dma.c             |  6 ---
 drivers/dma/xilinx/xilinx_dpdma.c         | 12 +++--
 drivers/gpu/drm/xlnx/zynqmp_disp.c        |  9 +++-
 drivers/mmc/host/bcm2835.c                |  2 -
 drivers/mtd/nand/raw/qcom_nandc.c         | 14 +++++-
 drivers/spi/spi-pic32.c                   |  2 -
 drivers/staging/ralink-gdma/ralink-gdma.c | 12 ++---
 drivers/tty/serial/msm_serial.c           | 15 +++++-
 include/linux/dma/qcom_adm.h              | 12 +++++
 include/linux/dma/xilinx_dpdma.h          | 11 +++++
 include/linux/dmaengine.h                 |  4 --
 include/sound/dmaengine_pcm.h             |  2 -
 sound/core/pcm_dmaengine.c                |  5 +-
 sound/soc/tegra/tegra20_spdif.c           |  1 -
 19 files changed, 119 insertions(+), 68 deletions(-)
 create mode 100644 include/linux/dma/qcom_adm.h
 create mode 100644 include/linux/dma/xilinx_dpdma.h