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linux/drivers/spi
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Bartosz Golaszewski a720416d94
spi: spidev: fix a race condition when accessing spidev->spi 
There's a spinlock in place that is taken in file_operations callbacks
whenever we check if spidev->spi is still alive (not null). It's also
taken when spidev->spi is set to NULL in remove().

This however doesn't protect the code against driver unbind event while
one of the syscalls is still in progress. To that end we need a lock taken
continuously as long as we may still access spidev->spi. As both the file
ops and the remove callback are never called from interrupt context, we
can replace the spinlock with a mutex.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230106100719.196243-1-brgl@bgdev.pl
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-01-11 14:15:10 +00:00
..
atmel-quadspi.c
spi: atmel-quadspi: Add support for configuring CS timing
2022-11-18 11:57:11 +00:00
internals.h
…
Kconfig
Nuvoton WPCM450 FIU SPI flash controller
2022-11-25 14:58:57 +00:00
Makefile
spi: wpcm-fiu: Add driver for Nuvoton WPCM450 Flash Interface Unit (FIU)
2022-11-25 13:30:15 +00:00
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: altera: Change to dynamic allocation of spi id
2021-10-20 01:53:15 +01:00
spi-amd.c
spi: amd: Fix SPI_SPD7 value
2022-11-04 12:25:03 +00:00
spi-ar934x.c
spi: ar934x: fix transfer size
2022-01-04 14:59:40 +00:00
spi-armada-3700.c
spi: a3700: support BE for AC5 SPI driver
2022-07-26 16:51:07 +01:00
spi-aspeed-smc.c
Linux 6.1-rc4
2022-11-25 19:16:05 +00:00
spi-at91-usart.c
spi: at91-usart: replacing legacy gpio interface for gpiod
2021-10-20 00:23:21 +01:00
spi-ath79.c
spi: ath79: add mem_ops for fast-read
2022-02-08 13:40:18 +00:00
spi-atmel.c
spi: atmel: remove #ifdef CONFIG_{PM, SLEEP}
2022-07-18 13:45:32 +01:00
spi-au1550.c
spi: spi-au1550: replace ternary operator with min()
2022-05-16 17:57:01 +01:00
spi-axi-spi-engine.c
…
spi-bcm63xx-hsspi.c
…
spi-bcm63xx.c
spi: bcm63xx: Use devm_platform_get_and_ioremap_resource()
2022-10-17 12:49:49 +01:00
spi-bcm2835.c
spi: Updates for v5.20
2022-08-02 10:55:04 -07:00
spi-bcm2835aux.c
spi: bcm2835aux: Convert to use GPIO descriptors
2022-02-01 16:08:47 +00:00
spi-bcm-qspi.c
spi: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
spi-bcm-qspi.h
spi: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
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: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
spi-butterfly.c
…
spi-cadence-quadspi.c
spi: cadence-quadspi: Add minimum operable clock rate warning to baudrate divisor calculation
2022-11-29 18:45:32 +00:00
spi-cadence-xspi.c
spi: cadence: Fix busy cycles calculation
2022-12-26 23:23:21 +00:00
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: clps711x: Use syscon_regmap_lookup_by_phandle
2022-04-25 14:01:09 +01:00
spi-coldfire-qspi.c
…
spi-davinci.c
…
spi-dln2.c
spi: dln2: Propagate firmware node
2021-12-23 13:38:38 +00:00
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: Quite logging on deferred controller registration
2022-08-23 13:06:36 +01:00
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: Add support for Intel Thunder Bay SPI controller
2022-07-13 13:32:32 +01:00
spi-dw-pci.c
spi: dw: Put the driver entities naming in order
2021-11-16 14:30:05 +00:00
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: substitute empty_zero_page with helper ZERO_PAGE(0)
2022-10-19 13:05:37 +01:00
spi-fsl-cpm.h
…
spi-fsl-dspi.c
spi: fsl-dspi: add cs-gpios support
2022-11-16 14:46:07 +00:00
spi-fsl-espi.c
…
spi-fsl-lib.c
…
spi-fsl-lib.h
…
spi-fsl-lpspi.c
spi: spi-fsl-lpspi: support multiple cs for lpspi
2022-12-07 14:19:20 +00:00
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_spi: Don't change speed while chipselect is active
2022-12-14 14:24:51 +00:00
spi-fsl-spi.h
…
spi-geni-qcom.c
spi: qcom: geni: Simplify DMA setting
2022-01-28 16:00:24 +00:00
spi-gpio.c
spi: spi-gpio: Don't set MOSI as an input if not 3WIRE mode
2022-12-08 11:46:41 +00:00
spi-gxp.c
spi: spi-gxp: fix typo in SPDX identifier line
2022-10-04 12:45:07 +01:00
spi-hisi-kunpeng.c
spi: hisi-kunpeng: Fix the debugfs directory name incorrect
2021-11-17 13:04:54 +00:00
spi-hisi-sfc-v3xx.c
spi: hisi-sfc-v3xx: Fix a typo ("duall")
2022-11-03 19:34:33 +00:00
spi-img-spfi.c
spi: img-spfi: Use devm_platform_get_and_ioremap_resource()
2022-10-19 15:57:01 +01:00
spi-imx.c
spi: Updates for v6.2
2022-12-13 12:54:31 -08:00
spi-ingenic.c
spi: ingenic: Add support for new Ingenic SoCs.
2022-04-25 14:00:51 +01:00
spi-intel-pci.c
spi: intel: Add support for Intel Meteor Lake-P SPI serial flash
2022-06-29 12:38:20 +01:00
spi-intel-platform.c
mtd: spi-nor: intel-spi: Convert to SPI MEM
2022-02-14 12:53:09 +00:00
spi-intel.c
spi: Updates for v6.2
2022-12-13 12:54:31 -08:00
spi-intel.h
mtd: spi-nor: intel-spi: Convert to SPI MEM
2022-02-14 12:53:09 +00:00
spi-iproc-qspi.c
spi: bcm-qspi: Make bcm_qspi_remove() return void
2022-10-18 19:16:53 +01:00
spi-jcore.c
…
spi-lantiq-ssc.c
spi: Use of_device_get_match_data()
2022-02-21 13:25:19 +00:00
spi-lm70llp.c
…
spi-loopback-test.c
spi: spi-loopback-test: Add test to trigger DMA/PIO mixing
2022-09-19 15:44:19 +01:00
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: Updates for v6.2
2022-12-13 12:54:31 -08:00
spi-meson-spifc.c
spi: spi-meson-spifc: Add missing pm_runtime_disable() in meson_spifc_probe
2022-01-07 13:36:38 +00:00
spi-microchip-core-qspi.c
spi: microchip-core-qspi: Add support for microchip fpga qspi controllers
2022-08-15 12:17:38 +01:00
spi-microchip-core.c
spi: microchip-core: Remove the unused function mchp_corespi_enable()
2022-10-17 12:49:47 +01:00
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: Replace NO_IRQ by 0
2022-10-10 13:01:20 +01:00
spi-mpc512x-psc.c
spi: mpc512x-psc: Fix compile errors
2022-02-02 16:09:29 +00:00
spi-mt65xx.c
spi: mediatek: Enable irq before the spi registration
2022-12-26 23:23:21 +00:00
spi-mt7621.c
spi: mt7621: Remove 'clk' from 'struct mt7621_spi'
2022-08-29 17:51:39 +01:00
spi-mtk-nor.c
spi: spi-mtk-nor: Add recovery mechanism for dma read timeout
2022-12-07 14:19:22 +00:00
spi-mtk-snfi.c
spi: mtk-snfi: Add snfi support for MT7986 IC
2022-12-06 12:37:32 +00:00
spi-mux.c
spi: mux: Fix mux interaction with fast path optimisations
2022-09-02 13:27:13 +01:00
spi-mxic.c
spi: mxic: Use devm_platform_ioremap_resource_byname()
2022-10-31 13:20:25 +00:00
spi-mxs.c
spi: mxs: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-25 14:00:59 +01:00
spi-npcm-fiu.c
spi: npcm-fiu: Use devm_platform_ioremap_resource_byname()
2022-10-31 13:20:24 +00:00
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: make const array ls1028a_soc_attr static
2022-11-02 16:44:15 +00:00
spi-oc-tiny.c
…
spi-omap2-mcspi.c
spi: omap2-mcspi: Fix probe so driver works again
2022-09-21 10:28:20 +01:00
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
ARM: omap1: move perseus spi pinconf to board file
2022-04-21 15:01:08 +02:00
spi-orion.c
spi: orion: Add of_node_put() before goto
2021-10-15 16:10:59 +01:00
spi-pci1xxxx.c
spi: microchip: pci1xxxx: Add suspend and resume support for PCI1XXXX SPI driver
2022-11-29 16:59:11 +00:00
spi-pic32-sqi.c
…
spi-pic32.c
spi: pic32: Convert to use GPIO descriptors
2022-01-31 15:17:30 +00:00
spi-pl022.c
spi: spl022: fix Microwire full duplex mode
2021-10-26 11:53:57 +01:00
spi-ppc4xx.c
…
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: Move OF and ACPI ID tables closer to their user
2022-10-24 13:30:18 +01:00
spi-pxa2xx.h
spi: pxa2xx: Get rid of unused ->cs_control()
2021-11-29 12:19:59 +00:00
spi-qcom-qspi.c
…
spi-qup.c
spi: qup: support using GPIO as chip select line
2022-10-17 12:46:59 +01:00
spi-rb4xx.c
…
spi-realtek-rtl.c
…
spi-rockchip-sfc.c
spi: rockchip-sfc: fix platform_get_irq.cocci warning
2022-03-10 12:17:56 +00:00
spi-rockchip.c
spi: rockchip: Unmask IRQ at the final to avoid preemption
2022-06-20 11:35:43 +01:00
spi-rpc-if.c
spi: rpc-if: Fix RPM imbalance in probe error path
2022-04-04 08:38:59 +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 large transfers with DMA
2022-09-28 12:54:07 +01:00
spi-sc18is602.c
spi: sc18is602: Convert to i2c's .probe_new()
2022-11-23 17:26:25 +00:00
spi-sh-hspi.c
…
spi-sh-msiof.c
spi: sh-msiof: add generic Gen4 binding
2022-08-29 12:41:36 +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: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-slave-time.c
spi: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-sn-f-ospi.c
spi: Add Socionext F_OSPI SPI flash controller driver
2022-11-24 11:05:07 +00:00
spi-sprd-adi.c
spi: sprd: Add ADI r3 support
2021-08-26 12:09:38 +01:00
spi-sprd.c
spi: spi-sprd: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-25 14:00:57 +01:00
spi-st-ssc4.c
spi: st-ssc4: Covert to use GPIO descriptors
2022-02-01 16:08:45 +00:00
spi-stm32-qspi.c
spi: stm32-qspi: Refactor dual flash mode enable check in ->setup()
2022-08-31 12:13:11 +01:00
spi-stm32.c
spi: stm32: fix stm32_spi_prepare_mbr() that halves spi clk for every run
2022-11-03 13:25:40 +00:00
spi-sun4i.c
spi: sun4i: fix typos in comments
2022-03-15 12:03:58 +00:00
spi-sun6i.c
…
spi-sunplus-sp7021.c
spi: remove spin_lock_irq and variable in the irq procress
2022-04-19 13:13:42 +01:00
spi-synquacer.c
spi: synquacer: Add missing clk_disable_unprepare()
2022-06-27 23:26:53 +01:00
spi-tegra20-sflash.c
spi: spi-tegra20-sflash: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-25 14:01:03 +01:00
spi-tegra20-slink.c
spi: tegra20-slink: fix UAF in tegra_slink_remove()
2022-07-13 13:49:03 +01:00
spi-tegra114.c
spi: spi-tegra114: using pm_runtime_resume_and_get instead of pm_runtime_get_sync
2022-04-19 13:13:44 +01:00
spi-tegra210-quad.c
spi: tegra210-quad: Fix duplicate resource error
2022-11-17 10:53:04 +00:00
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: make remove callback a void function
2022-02-09 13:00:45 +00:00
spi-topcliff-pch.c
spi: topcliff-pch: Use core message validation
2022-06-20 12:43:36 +01:00
spi-uniphier.c
spi: uniphier: fix reference count leak in uniphier_spi_probe()
2022-01-26 15:52:05 +00:00
spi-wpcm-fiu.c
spi: wpcm-fiu: Add direct map support
2022-11-25 13:30:16 +00:00
spi-xcomm.c
spi: xcomm: Convert to i2c's .probe_new()
2022-11-23 17:26:27 +00:00
spi-xilinx.c
spi: xilinx: Switch to use devm_spi_alloc_master()
2022-09-23 18:21:49 +01:00
spi-xlp.c
spi: xlp: Remove Netlogic XLP variants
2021-11-15 13:27:17 +00:00
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: spi-zynq-qspi: Fix a NULL pointer dereference in zynq_qspi_exec_mem_op()
2022-02-08 13:37:50 +00:00
spi-zynqmp-gqspi.c
spi: spi-zynqmp-gqspi: Add tap delay support for GQSPI controller on Versal platform
2022-10-19 14:34:40 +01:00
spi.c
spi: Reintroduce spi_set_cs_timing()
2022-11-18 11:57:10 +00:00
spidev.c
spi: spidev: fix a race condition when accessing spidev->spi
2023-01-11 14:15:10 +00:00