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linux/drivers/spi
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Mark Hasemeyer bef4a48f4e
spi: Fix null dereference on suspend 
A race condition exists where a synchronous (noqueue) transfer can be
active during a system suspend. This can cause a null pointer
dereference exception to occur when the system resumes.

Example order of events leading to the exception:
1. spi_sync() calls __spi_transfer_message_noqueue() which sets
   ctlr->cur_msg
2. Spi transfer begins via spi_transfer_one_message()
3. System is suspended interrupting the transfer context
4. System is resumed
6. spi_controller_resume() calls spi_start_queue() which resets cur_msg
   to NULL
7. Spi transfer context resumes and spi_finalize_current_message() is
   called which dereferences cur_msg (which is now NULL)

Wait for synchronous transfers to complete before suspending by
acquiring the bus mutex and setting/checking a suspend flag.

Signed-off-by: Mark Hasemeyer <markhas@chromium.org>
Link: https://lore.kernel.org/r/20231107144743.v1.1.I7987f05f61901f567f7661763646cb7d7919b528@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@kernel.org
2023-11-10 13:54:58 +00:00
..
atmel-quadspi.c
spi: atmel-quadspi: Convert to platform remove callback returning void
2023-03-17 15:47:51 +00:00
internals.h
…
Kconfig
spi: spi-zynq-qspi: add spi-mem to driver kconfig dependencies
2023-11-06 10:59:15 +00:00
Makefile
Add cs42l43 PC focused SoundWire CODEC
2023-08-18 22:46:19 +01:00
spi-altera-core.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-altera-dfl.c
spi: spi-altera-dfl: switch to use modern name
2022-12-29 13:22:04 +00:00
spi-altera-platform.c
spi: spi-altera-platform: switch to use modern name
2022-12-29 13:22:05 +00:00
spi-amd.c
spi: amd: fix Wvoid-pointer-to-enum-cast warning
2023-08-14 13:11:15 +01:00
spi-amlogic-spifc-a1.c
spi: amlogic-spifc-a1: switch to use devm_spi_alloc_host()
2023-08-14 13:10:48 +01:00
spi-ar934x.c
spi: ar934x: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:52 +01:00
spi-armada-3700.c
spi: armada-3700: Use helper function devm_clk_get_prepared()
2023-09-11 01:31:53 +01:00
spi-aspeed-smc.c
spi: aspeed: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:54 +01:00
spi-at91-usart.c
spi: at91-usart: Remove some dead code
2023-09-25 16:27:48 +02:00
spi-ath79.c
spi: ath79: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:55 +01:00
spi-atmel.c
spi: Header and core clean up and refactoring
2023-07-12 12:44:34 +01:00
spi-au1550.c
spi: au1550: switch to use modern name
2023-08-14 13:10:49 +01:00
spi-axi-spi-engine.c
spi: spi-axi-spi-engine: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:56 +01:00
spi-bcm63xx-hsspi.c
spi: bcm63xx-hsspi: switch to use modern name
2023-08-07 14:38:23 +01:00
spi-bcm63xx.c
spi: bcm63xx: switch to use modern name
2023-08-07 14:38:24 +01:00
spi-bcm2835.c
spi: bcm2835: add a sentinel at the end of the lookup array
2023-10-10 13:12:11 +01:00
spi-bcm2835aux.c
spi: bcm2835aux: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:57 +01:00
spi-bcm-qspi.c
spi: bcm-qspi: switch to use modern name
2023-08-07 14:38:20 +01:00
spi-bcm-qspi.h
spi: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
spi-bcmbca-hsspi.c
spi: bcmbca-hsspi: switch to use modern name
2023-08-14 13:10:59 +01:00
spi-bitbang-txrx.h
spi: Get rid of old SPI_MASTER_NO_TX & SPI_MASTER_NO_RX
2023-07-11 13:41:20 +01:00
spi-bitbang.c
spi: Rename SPI_MASTER_GPIO_SS to SPI_CONTROLLER_GPIO_SS
2023-07-11 14:12:56 +01:00
spi-brcmstb-qspi.c
spi: brcmstb-qspi: Convert to platform remove callback returning void
2023-03-06 12:31:15 +00:00
spi-butterfly.c
spi: butterfly: switch to use modern name
2023-08-07 14:38:25 +01:00
spi-cadence-quadspi.c
spi: spi-cadence-quadspi: Fix missing unwind goto warnings
2023-09-26 14:49:24 +02:00
spi-cadence-xspi.c
spi: cadence-xspi: switch to use modern name
2023-08-07 14:38:26 +01:00
spi-cadence.c
spi: spi-cadence: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:58 +01:00
spi-cavium-octeon.c
spi: octeon: switch to use modern name
2023-08-07 14:38:29 +01:00
spi-cavium-thunderx.c
spi: spi-cavium-thunderx: Use helper function devm_clk_get_enabled()
2023-09-11 01:31:59 +01:00
spi-cavium.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-cavium.h
…
spi-clps711x.c
spi: clps711x: switch to use modern name
2023-08-07 14:38:28 +01:00
spi-coldfire-qspi.c
spi: coldfire-qspi: switch to use modern name
2023-08-07 14:38:31 +01:00
spi-cs42l43.c
spi: cs42l43: Add SPI controller support
2023-08-18 17:38:11 +01:00
spi-davinci.c
spi: davinci: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:00 +01:00
spi-dln2.c
spi: dln2: switch to use modern name
2023-08-07 14:38:32 +01:00
spi-dw-bt1.c
spi: dw-bt1: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:01 +01:00
spi-dw-core.c
spi: dw: switch to use modern name
2023-08-07 14:38:33 +01:00
spi-dw-dma.c
spi: dw: switch to use modern name
2023-08-07 14:38:33 +01:00
spi-dw-mmio.c
spi: dw-mmio: Use helper function devm_clk_get_*()
2023-09-11 01:32:02 +01:00
spi-dw-pci.c
…
spi-dw.h
spi: dw: switch to use modern name
2023-08-07 14:38:33 +01:00
spi-ep93xx.c
spi: ep93xx: switch to use modern name
2023-08-14 13:10:50 +01:00
spi-falcon.c
spi: falcon: switch to use modern name
2023-08-14 13:10:51 +01:00
spi-fsi.c
spi: fsi: switch to use spi_alloc_host()
2023-08-14 13:10:52 +01:00
spi-fsl-cpm.c
spi: fsl-cpm: Properly define and use IO pointers
2023-08-09 12:52:49 +01:00
spi-fsl-cpm.h
…
spi-fsl-dspi.c
spi: spi-fsl-dspi: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:02 +01:00
spi-fsl-espi.c
spi: fsl-espi: switch to use modern name
2023-08-14 13:10:54 +01:00
spi-fsl-lib.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-fsl-lib.h
spi: fsl: Remove unused extern declarations
2023-07-25 17:40:28 +01:00
spi-fsl-lpspi.c
spi: fsl-lpspi: switch to use modern name
2023-08-14 13:10:54 +01:00
spi-fsl-qspi.c
spi: fsl-qspi: switch to use modern name
2023-08-14 13:10:55 +01:00
spi-fsl-spi.c
spi: fsl-spi: switch to use modern name
2023-08-14 13:10:56 +01:00
spi-fsl-spi.h
…
spi-geni-qcom.c
spi: spi-geni-qcom: Rename the label unmap_if_dma
2023-10-09 13:14:30 +01:00
spi-gpio.c
spi: gpio: switch to use modern name
2023-08-14 13:10:57 +01:00
spi-gxp.c
spi: gxp: switch to use modern name
2023-08-14 13:10:58 +01:00
spi-hisi-kunpeng.c
spi: hisi-kunpeng: switch to use modern name
2023-08-07 14:38:34 +01:00
spi-hisi-sfc-v3xx.c
spi: hisi-sfc-v3xx: switch to use modern name
2023-08-14 13:11:00 +01:00
spi-img-spfi.c
spi: img-spfi: switch to use modern name
2023-08-14 13:11:01 +01:00
spi-imx.c
spi: imx: switch to use modern name
2023-08-14 13:11:02 +01:00
spi-ingenic.c
spi: ingenic: switch to use devm_spi_alloc_host()
2023-08-14 13:11:03 +01:00
spi-intel-pci.c
spi: intel-pci: Add support for Meteor Lake-S SPI serial flash
2023-03-31 12:54:07 +01:00
spi-intel-platform.c
…
spi-intel.c
spi: intel: switch to use modern name
2023-08-14 13:11:04 +01:00
spi-intel.h
…
spi-iproc-qspi.c
spi: bcm-qspi: Simplify logic by using devm_platform_ioremap_resource_byname()
2023-08-21 13:10:56 +01:00
spi-jcore.c
spi: jcore: switch to use modern name
2023-08-14 13:11:05 +01:00
spi-lantiq-ssc.c
spi: lantiq-ssc: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:03 +01:00
spi-lm70llp.c
spi: lm70llp: switch to use modern name
2023-09-11 01:31:30 +01:00
spi-loongson-core.c
spi: loongson: add bus driver for the loongson spi controller
2023-07-31 15:57:09 +01:00
spi-loongson-pci.c
spi: loongson: add bus driver for the loongson spi controller
2023-07-31 15:57:09 +01:00
spi-loongson-plat.c
spi: loongson: add bus driver for the loongson spi controller
2023-07-31 15:57:09 +01:00
spi-loongson.h
spi: loongson: add bus driver for the loongson spi controller
2023-07-31 15:57:09 +01:00
spi-loopback-test.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-lp8841-rtc.c
spi: lp-8841: switch to use modern name
2023-09-11 01:31:31 +01:00
spi-mem.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-meson-spicc.c
spi: Use devm_clk_get_*() helper function to
2023-09-11 22:43:17 +01:00
spi-meson-spifc.c
spi: Use devm_clk_get_*() helper function to
2023-09-11 22:43:17 +01:00
spi-microchip-core-qspi.c
spi: Use devm_clk_get_*() helper function to
2023-09-11 22:43:17 +01:00
spi-microchip-core.c
spi: Use devm_clk_get_*() helper function to
2023-09-11 22:43:17 +01:00
spi-mpc52xx-psc.c
spi: mpc52xx-psc: Make mpc52xx_psc_spi_transfer_one_message() static
2023-10-06 12:34:31 +01:00
spi-mpc52xx.c
spi: mpc52xx: switch to use modern name
2023-09-11 01:31:37 +01:00
spi-mpc512x-psc.c
spi: mpc512x-psc: switch to use modern name
2023-09-11 01:31:35 +01:00
spi-mt65xx.c
spi: mt65xx: switch to use modern name
2023-09-11 01:31:37 +01:00
spi-mt7621.c
spi: mt7621: switch to use modern name
2023-09-11 01:31:38 +01:00
spi-mtk-nor.c
spi: mtk-nor: switch to use modern name
2023-09-11 01:31:39 +01:00
spi-mtk-snfi.c
spi: Use devm_clk_get_*() helper function to
2023-09-11 22:43:17 +01:00
spi-mux.c
spi: mux: switch to use spi_alloc_host()
2023-09-11 01:31:41 +01:00
spi-mxic.c
spi: mxic: switch to use modern name
2023-09-11 01:31:42 +01:00
spi-mxs.c
spi: mxs: switch to use modern name
2023-09-11 01:31:42 +01:00
spi-npcm-fiu.c
spi: npcm-fiu: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:08 +01:00
spi-npcm-pspi.c
spi: npcm-pspi: switch to use modern name
2023-09-11 01:31:43 +01:00
spi-nxp-fspi.c
spi: nxp-fspi: switch to use modern name
2023-09-11 01:31:44 +01:00
spi-oc-tiny.c
spi: oc-tiny: switch to use modern name
2023-09-11 01:31:45 +01:00
spi-omap2-mcspi.c
spi: omap2-mcspi: Add FIFO support without DMA
2023-10-23 13:30:05 +01:00
spi-omap-uwire.c
spi: omap-uwire: switch to use modern name
2023-09-11 01:31:46 +01:00
spi-orion.c
spi: orion: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:09 +01:00
spi-pci1xxxx.c
spi: mchp-pci1xxxx: Annotate struct pci1xxxx_spi with __counted_by
2023-09-22 19:01:40 +01:00
spi-pic32-sqi.c
spi: pic32-sqi: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:10 +01:00
spi-pic32.c
spi: pic32: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:11 +01:00
spi-pl022.c
spi: spl022: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:11 +01:00
spi-ppc4xx.c
spi: ppc4xx: switch to use modern name
2023-08-21 14:29:23 +01:00
spi-pxa2xx-dma.c
…
spi-pxa2xx-pci.c
spi: pxa2xx-pci: Constify struct pxa_spi_info variables
2022-02-28 12:10:27 +00:00
spi-pxa2xx.c
spi: pxa2xx: switch to use modern name
2023-08-21 14:29:24 +01:00
spi-pxa2xx.h
…
spi-qcom-qspi.c
spi: spi-qcom-qspi: switch to use modern name
2023-08-21 14:29:25 +01:00
spi-qup.c
spi: qup: Vote for interconnect bandwidth to DRAM
2023-09-25 14:19:38 +02:00
spi-rb4xx.c
spi: rb4xx: switch to use modern name
2023-08-21 14:29:27 +01:00
spi-realtek-rtl.c
spi: realtek-rtl: switch to use devm_spi_alloc_host()
2023-08-21 14:29:28 +01:00
spi-rockchip-sfc.c
spi: rockchip-sfc: switch to use modern name
2023-08-21 14:29:29 +01:00
spi-rockchip.c
spi: rockchip: Use helper function devm_clk_get_enabled()
2023-09-11 01:32:12 +01:00
spi-rpc-if.c
spi: rpc-if: switch to use devm_spi_alloc_host()
2023-08-16 12:58:08 +01:00
spi-rspi.c
spi: rspi: switch to use spi_alloc_host()
2023-08-21 14:29:30 +01:00
spi-rzv2m-csi.c
spi: rzv2m-csi: Add target mode support
2023-10-09 13:14:28 +01:00
spi-s3c64xx.c
spi: s3c64xx: switch to use modern name
2023-08-21 14:29:32 +01:00
spi-sc18is602.c
spi: sc18is602: switch to use modern name
2023-08-21 14:29:33 +01:00
spi-sh-hspi.c
spi: sh-hspi: switch to use modern name
2023-08-21 14:29:34 +01:00
spi-sh-msiof.c
spi: sh-msiof: switch to use modern name
2023-08-21 14:29:35 +01:00
spi-sh-sci.c
spi: sh-sci: switch to use modern name
2023-08-21 14:29:36 +01:00
spi-sh.c
spi: sh: switch to use modern name
2023-08-21 14:29:37 +01:00
spi-sifive.c
spi: sifive: switch to use modern name
2023-08-21 14:29:38 +01:00
spi-slave-mt27xx.c
spi: Get rid of old SPI_MASTER_MUST_TX & SPI_MASTER_MUST_RX
2023-07-11 13:41:25 +01:00
spi-slave-system-control.c
…
spi-slave-time.c
…
spi-sn-f-ospi.c
spi: spi-sn-f-ospi: switch to use modern name
2023-08-21 14:29:39 +01:00
spi-sprd-adi.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-sprd.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-st-ssc4.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-stm32-qspi.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-stm32.c
spi: stm32: Explicitly include correct DT includes
2023-10-17 21:38:51 +01:00
spi-sun4i.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-sun6i.c
spi: Fixes for v6.6
2023-09-07 15:49:20 -07:00
spi-sunplus-sp7021.c
spi: sunplus-sp7021: Convert to platform remove callback returning void
2023-03-06 21:18:18 +00:00
spi-synquacer.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-tegra20-sflash.c
spi: tegra20-sflash: fix to check return value of platform_get_irq() in tegra_sflash_probe()
2023-07-26 16:30:19 +01:00
spi-tegra20-slink.c
spi: tegra: Fix missing IRQ check in tegra_slink_probe()
2023-09-11 01:32:20 +01:00
spi-tegra114.c
spi: tegra114: Remove unnecessary NULL-pointer checks
2023-08-15 19:55:00 +01:00
spi-tegra210-quad.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-test.h
…
spi-ti-qspi.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-tle62x0.c
…
spi-topcliff-pch.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-uniphier.c
spi: uniphier: Convert to platform remove callback returning void
2023-03-06 21:18:24 +00:00
spi-wpcm-fiu.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-xcomm.c
spi: Convert to SPI_CONTROLLER_HALF_DUPLEX
2023-07-11 14:14:31 +01:00
spi-xilinx.c
spi: xilinx: Use devm_platform_get_and_ioremap_resource()
2023-03-28 14:49:37 +01:00
spi-xlp.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-xtensa-xtfpga.c
spi: Get rid of old SPI_MASTER_NO_TX & SPI_MASTER_NO_RX
2023-07-11 13:41:20 +01:00
spi-zynq-qspi.c
spi: spi-zynq: Do not check for 0 return after calling platform_get_irq()
2023-08-07 14:38:39 +01:00
spi-zynqmp-gqspi.c
spi: spi-zynq: Do not check for 0 return after calling platform_get_irq()
2023-08-07 14:38:39 +01:00
spi.c
spi: Fix null dereference on suspend
2023-11-10 13:54:58 +00:00
spidev.c
spi: spidev: make spidev_class constant
2023-10-06 15:44:47 +01:00