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linux-yocto/drivers/spi
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James Clark aa93890d2d spi: spi-fsl-dspi: Clear completion counter before initiating transfer 
[ Upstream commit fa60c094c1 ]

In target mode, extra interrupts can be received between the end of a
transfer and halting the module if the host continues sending more data.
If the interrupt from this occurs after the reinit_completion() then the
completion counter is left at a non-zero value. The next unrelated
transfer initiated by userspace will then complete immediately without
waiting for the interrupt or writing to the RX buffer.

Fix it by resetting the counter before the transfer so that lingering
values are cleared. This is done after clearing the FIFOs and the
status register but before the transfer is initiated, so no interrupts
should be received at this point resulting in other race conditions.

Fixes: 4f5ee75ea1 ("spi: spi-fsl-dspi: Replace interruptible wait queue with a simple completion")
Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20250627-james-nxp-spi-dma-v4-1-178dba20c120@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-07-10 15:59:47 +02:00
..
atmel-quadspi.c spi: atmel-quadspi: Fix wrong register value written to MR 2025-03-07 16:56:41 +01:00
internals.h
Kconfig spi: spi-zynqmp-gqspi: fix driver kconfig dependencies 2024-01-25 15:27:19 -08:00
Makefile spi: microchip-core-qspi: Add support for microchip fpga qspi controllers 2022-08-15 12:17:38 +01:00
spi-altera-core.c
spi-altera-dfl.c spi: spi-altera-dfl: Fix an error handling path 2022-06-06 12:39:16 +01:00
spi-altera-platform.c
spi-amd.c spi: amd: Fix SPI_SPD7 value 2022-11-04 12:25:03 +00:00
spi-ar934x.c
spi-armada-3700.c spi: a3700: support BE for AC5 SPI driver 2022-07-26 16:51:07 +01:00
spi-aspeed-smc.c spi: aspeed: Fix an error handling path in aspeed_spi_[read|write]_user() 2024-12-19 18:08:55 +01:00
spi-at91-usart.c
spi-ath79.c
spi-atmel.c spi: atmel: Fix clock issue when using devices with different polarities 2024-01-05 15:18:38 +01:00
spi-au1550.c
spi-axi-spi-engine.c spi: axi-spi-engine: fix version format string 2024-05-17 11:55:57 +02:00
spi-bcm-qspi.c spi: bcm-qspi: fix SFDP BFPT read by usig mspi read 2024-01-31 16:17:12 -08:00
spi-bcm-qspi.h
spi-bcm63xx-hsspi.c spi: bcm63xx-hsspi: fix shared reset 2025-06-27 11:07:17 +01:00
spi-bcm63xx.c spi: bcm63xx-spi: fix shared reset 2025-06-27 11:07:17 +01:00
spi-bcm2835.c spi: Updates for v5.20 2022-08-02 10:55:04 -07:00
spi-bcm2835aux.c
spi-bitbang-txrx.h spi: bitbang: Fix lsb-first Rx 2022-08-15 01:26:20 +01:00
spi-bitbang.c
spi-brcmstb-qspi.c
spi-butterfly.c
spi-cadence-quadspi.c spi: cadence-qspi: fix pointer reference in runtime PM hooks 2025-05-22 14:10:11 +02:00
spi-cadence-xspi.c spi: cadence: Ensure data lines set to low during dummy-cycle period 2024-07-11 12:47:18 +02:00
spi-cadence.c spi: spi-cadence: Fix SPI NO Slave Select macro definition 2022-07-20 18:45:21 +01:00
spi-cavium-octeon.c
spi-cavium-thunderx.c
spi-cavium.c
spi-cavium.h
spi-clps711x.c
spi-coldfire-qspi.c
spi-davinci.c
spi-dln2.c
spi-dw-bt1.c spi: dw: Fix PM disable depth imbalance in dw_spi_bt1_probe 2022-09-26 16:10:36 +01:00
spi-dw-core.c spi: dw: Round of n_bytes to power of 2 2023-07-19 16:21:05 +02:00
spi-dw-dma.c spi: dw-dma: decrease reference count in dw_spi_dma_init_mfld() 2022-11-16 13:43:03 +00:00
spi-dw-mmio.c spi: dw: Remove misleading comment for Mount Evans SoC 2023-07-27 08:50:50 +02:00
spi-dw-pci.c
spi-dw.h spi: dw: Add support for Intel Thunder Bay SPI controller 2022-07-13 13:32:32 +01:00
spi-ep93xx.c
spi-falcon.c
spi-fsi.c spi: fsi: Increase timeout and ensure status is checked 2022-06-23 15:48:21 +01:00
spi-fsl-cpm.c spi: fsl-cpm: Use 16 bit mode for large transfers with even size 2023-05-17 11:54:00 +02:00
spi-fsl-cpm.h
spi-fsl-dspi.c spi: spi-fsl-dspi: Clear completion counter before initiating transfer 2025-07-10 15:59:47 +02:00
spi-fsl-espi.c
spi-fsl-lib.c
spi-fsl-lib.h
spi-fsl-lpspi.c spi: spi-fsl-lpspi: Use IRQF_NO_AUTOEN flag in request_irq() 2024-12-14 19:53:20 +01:00
spi-fsl-qspi.c spi: spi-fsl-qspi: Use devm_platform_ioremap_resource_byname() 2022-09-26 16:10:41 +01:00
spi-fsl-spi.c spi: fsl-cpm: Use 16 bit mode for large transfers with even size 2023-05-17 11:54:00 +02:00
spi-fsl-spi.h
spi-geni-qcom.c spi: geni-qcom: Fix incorrect free_irq() sequence 2024-09-18 19:23:06 +02:00
spi-gpio.c spi: spi-gpio: Don't set MOSI as an input if not 3WIRE mode 2022-12-31 13:32:25 +01:00
spi-gxp.c spi: spi-gxp: BUG: Correct spi write return value 2023-10-06 14:56:46 +02:00
spi-hisi-kunpeng.c spi: hisi-kunpeng: Delete the dump interface of data registers in debugfs 2024-05-17 11:55:58 +02:00
spi-hisi-sfc-v3xx.c spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected 2024-03-01 13:26:25 +01:00
spi-img-spfi.c spi: img-spfi: using pm_runtime_resume_and_get instead of pm_runtime_get_sync 2022-09-23 18:21:48 +01:00
spi-imx.c spi: spi-imx: Add check for spi_imx_setupxfer() 2025-05-02 07:47:08 +02:00
spi-ingenic.c
spi-intel-pci.c spi: intel-pci: Add support for Granite Rapids SPI serial flash 2023-10-06 14:56:55 +02:00
spi-intel-platform.c
spi-intel.c spi: intel: Check number of chip selects after reading the descriptor 2023-03-17 08:50:20 +01:00
spi-intel.h
spi-iproc-qspi.c
spi-jcore.c
spi-lantiq-ssc.c
spi-lm70llp.c
spi-loopback-test.c spi: loopback-test: Do not split 1024-byte hexdumps 2025-05-22 14:10:02 +02:00
spi-lp8841-rtc.c
spi-mem.c spi: spi-mem: Fix spi_mem_poll_status() 2022-06-06 12:32:27 +01:00
spi-meson-spicc.c spi: meson-spicc: fix do_div build error on non-arm64 2022-11-02 12:27:15 +00:00
spi-meson-spifc.c
spi-microchip-core-qspi.c spi: microchip-core-qspi: fix setting spi bus clock rate 2024-05-17 11:56:22 +02:00
spi-microchip-core.c spi: microchip-core: fix init function not setting the master and motorola modes 2024-08-03 08:49:51 +02:00
spi-mpc52xx-psc.c spi: mpc52xx-psc: Switch to using core message queue 2022-06-27 13:24:36 +01:00
spi-mpc52xx.c spi: mpc52xx: Add cancel_work_sync before module remove 2024-12-14 19:54:30 +01:00
spi-mpc512x-psc.c
spi-mt65xx.c spi: spi-mt65xx: Fix NULL pointer access in interrupt handler 2024-03-26 18:21:02 -04:00
spi-mt7621.c spi: mt7621: Remove 'clk' from 'struct mt7621_spi' 2022-08-29 17:51:39 +01:00
spi-mtk-nor.c
spi-mtk-snfi.c
spi-mux.c spi: mux: set ctlr->bits_per_word_mask 2024-07-25 09:49:19 +02:00
spi-mxic.c
spi-mxs.c spi-mxs: Fix chipselect glitch 2025-03-13 12:53:24 +01:00
spi-npcm-fiu.c spi: npcm-fiu: Fix UMA reads when dummy.nbytes == 0 2023-11-08 14:10:59 +01:00
spi-npcm-pspi.c spi: npcm-pspi: Add NPCM845 peripheral SPI support 2022-08-15 12:17:29 +01:00
spi-nxp-fspi.c spi: nxp-fspi: fix the KASAN report out-of-bounds bug 2024-09-18 19:23:06 +02:00
spi-oc-tiny.c
spi-omap-100k.c spi/omap100k:Fix PM disable depth imbalance in omap1_spi100k_probe 2022-09-26 16:10:37 +01:00
spi-omap-uwire.c
spi-omap2-mcspi.c spi: omap2-mcspi: Fix probe so driver works again 2022-09-21 10:28:20 +01:00
spi-orion.c
spi-pic32-sqi.c
spi-pic32.c
spi-pl022.c
spi-ppc4xx.c spi: ppc4xx: Avoid returning 0 when failed to parse and map IRQ 2024-10-17 15:20:45 +02:00
spi-pxa2xx-dma.c
spi-pxa2xx-pci.c
spi-pxa2xx.c spi: Updates for v6.1 2022-10-04 19:36:53 -07:00
spi-pxa2xx.h
spi-qcom-qspi.c
spi-qup.c spi: qup: Request DMA before enabling clocks 2023-06-14 11:15:15 +02:00
spi-rb4xx.c
spi-realtek-rtl.c
spi-rockchip-sfc.c spi: spi-rockchip: Fix missing unwind goto in rockchip_sfc_probe() 2023-04-26 14:28:34 +02:00
spi-rockchip.c spi: rockchip: Resolve unbalanced runtime PM / system PM handling 2024-09-12 11:10:18 +02:00
spi-rpc-if.c memory: renesas-rpc-if: Remove Runtime PM wrappers 2024-12-14 19:53:37 +01:00
spi-rspi.c spi: spi-rspi: Fix PIO fallback on RZ platforms 2022-07-21 17:21:07 +01:00
spi-s3c24xx-regs.h
spi-s3c24xx.c spi: s3c24xx: Switch to use devm_spi_alloc_master() 2022-09-23 18:21:50 +01:00
spi-s3c64xx.c spi: s3c64xx: fix timeout counters in flush_fifo 2024-10-17 15:21:49 +02:00
spi-sc18is602.c
spi-sh-hspi.c
spi-sh-msiof.c spi: sh-msiof: Fix maximum DMA transfer size 2025-06-27 11:07:07 +01:00
spi-sh-sci.c
spi-sh.c spi: sh: Switch to using core message queue 2022-06-27 13:24:35 +01:00
spi-sifive.c spi: sifive: add PM callbacks to support suspend/resume 2022-06-10 13:32:24 +01:00
spi-slave-mt27xx.c
spi-slave-system-control.c
spi-slave-time.c
spi-sprd-adi.c
spi-sprd.c
spi-st-ssc4.c
spi-stm32-qspi.c spi: stm32: qspi: Clamp stm32_qspi_get_mode() output to CCR_BUSWIDTH_4 2024-06-27 13:46:23 +02:00
spi-stm32.c spi: stm32: Don't warn about spurious interrupts 2024-06-12 11:03:58 +02:00
spi-sun4i.c spi: spi-sun4i: fix early activation 2025-06-04 14:40:26 +02:00
spi-sun6i.c spi: sun6i: fix race between DMA RX transfer completion and RX FIFO drain 2023-10-06 14:56:51 +02:00
spi-sunplus-sp7021.c
spi-synquacer.c spi: synquacer: Fix timeout handling in synquacer_spi_transfer_one() 2023-03-10 09:33:23 +01:00
spi-tegra20-sflash.c spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe() 2023-09-13 09:42:31 +02:00
spi-tegra20-slink.c spi: tegra: Fix missing IRQ check in tegra_slink_probe() 2023-11-20 11:51:55 +01:00
spi-tegra114.c
spi-tegra210-quad.c spi: tegra210-quad: modify chip select (CS) deactivation 2025-06-27 11:07:07 +01:00
spi-test.h
spi-ti-qspi.c spi: spi-ti-qspi: Support per-transfer and per-slave speed_hz settings 2022-06-06 12:41:36 +01:00
spi-tle62x0.c
spi-topcliff-pch.c spi: topcliff-pch: Use core message validation 2022-06-20 12:43:36 +01:00
spi-uniphier.c
spi-xcomm.c
spi-xilinx.c spi: xilinx: Switch to use devm_spi_alloc_master() 2022-09-23 18:21:49 +01:00
spi-xlp.c
spi-xtensa-xtfpga.c spi: xtensa-xtfpga: Switch to use devm_spi_alloc_master() 2022-09-22 14:39:50 +01:00
spi-zynq-qspi.c spi: zynq-qspi: Add check for clk_enable() 2025-02-21 13:48:59 +01:00
spi-zynqmp-gqspi.c spi: zynqmp-gqspi: Always acknowledge interrupts 2025-06-04 14:40:17 +02:00
spi.c spi: Fix acpi deferred irq probe 2024-12-14 19:54:02 +01:00
spidev.c spi: spidev: Add missing spi_device_id for jg10309-01 2024-09-30 16:23:50 +02:00