Merge tag 'spi-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Quite a lot of work in the SPI subsystem this time around, almost all
  in drivers rather than the core.

  As well as the general cleanup/fix work we're seeing over most of the
  kernel there's been some substantial performance work to two existing
  drivers and support for a number of new devices including a couple of
  new drivers. There was also a big overhaul of the spidev_test utility
  from the Pengutronix people.

   - Improvements for spidev_test to cover additional use cases, plus be
     a bit easier to use.

   - Substantial performance work in both DesignWare and Tegra210 QSPI
     drivers, making their interrupt handling more efficient to drive up
     hardware utilisation.

   - Documentation clarifications.

   - Fixes for some runtime PM and error handling issues.

   - Support for Nuvoton MA35D1, Qualcomm QPIC SNAND v2, Renesas R-Car
     Gen5 and X5H and Realtek RTD1625"

* tag 'spi-v7.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (136 commits)
  spi: ch341: handle transfers without a TX or RX buffer
  spi: dt-bindings: spi-qpic-snand: Add IPQ9650 compatible
  spi: spi-pci1xxxx: quiesce DMA engines on transfer timeout
  spi: amd: fix len==0 underflow and FIFO overflow
  spi: tegra114: initialize native chip selects inactive
  spi: bcm-qspi: reject oversized dummy bytes in mspi exec_mem_op
  spi: npcm-fiu: limit UMA data_size to the 16-byte staging buffer
  spi: omap2-mcspi: handle DMA setup failures
  spi: jcore: fix divide-by-zero when speed_hz is zero
  spi: cadence-xspi: fix stack buffer overflow in the Marvell b0 path
  spi: cadence-xspi: reject SDMA transfers larger than the requested length
  spi: meson-spicc: fix invalid DMA unmap on mapping failure
  spi: s3c64xx: Use snprintf() instead of sprintf()
  spi: omap2-mcspi: Use snprintf() instead of sprintf()
  spi: tle62x0: Use kstrtoul() instead of simple_strtoul()
  spi: lm70llp: Use strscpy() instead of strcpy()
  spi: butterfly: Use strscpy() instead of strcpy()
  spi: jcore: Use devm_platform_ioremap_resource()
  spi: sh-hspi: Use devm_platform_ioremap_resource()
  spi: ljca: validate the response length before copying the data
  ...

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