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