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23525fc0ea623006eff32bd6df8753b3d24f5d2b
linux/drivers/spi
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Christophe Leroy 3dd6d01384 spi: fsl-cpm: Check length parity before switching to 16 bit mode 
commit 1417927df8049a0194933861e9b098669a95c762 upstream.

Commit fc96ec826b ("spi: fsl-cpm: Use 16 bit mode for large transfers
with even size") failed to make sure that the size is really even
before switching to 16 bit mode. Until recently the problem went
unnoticed because kernfs uses a pre-allocated bounce buffer of size
PAGE_SIZE for reading EEPROM.

But commit 8ad6249c51d0 ("eeprom: at25: convert to spi-mem API")
introduced an additional dynamically allocated bounce buffer whose size
is exactly the size of the transfer, leading to a buffer overrun in
the fsl-cpm driver when that size is odd.

Add the missing length parity verification and remain in 8 bit mode
when the length is not even.

Fixes: fc96ec826b ("spi: fsl-cpm: Use 16 bit mode for large transfers with even size")
Cc: stable@vger.kernel.org
Closes: https://lore.kernel.org/all/638496dd-ec60-4e53-bad7-eb657f67d580@csgroup.eu/
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: Sverdlin Alexander <alexander.sverdlin@siemens.com>
Link: https://patch.msgid.link/3c4d81c3923c93f95ec56702a454744a4bad3cfc.1763627618.git.christophe.leroy@csgroup.eu
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-01-11 15:21:50 +01:00
..
atmel-quadspi.c
spi: atmel-qspi: Memory barriers after memory-mapped I/O
2025-02-17 09:40:41 +01:00
internals.h
spi: Add an helper to flush the message queue
2018-04-23 15:48:18 +01:00
Kconfig
spi: tegra114: remove Kconfig dependency on TEGRA20_APB_DMA
2025-12-07 06:18:50 +09:00
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: Handle devm_pm_runtime_enable() errors
2025-12-07 06:18:50 +09:00
spi-ar934x.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-armada-3700.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-aspeed-smc.c
spi: aspeed: Fix an error handling path in aspeed_spi_[read|write]_user()
2024-12-19 18:11:29 +01:00
spi-at91-usart.c
spi: at91-usart: Use PTR_ERR_OR_ZERO() to simplify code
2023-08-22 13:51:35 +01:00
spi-ath79.c
spi: Rename SPI_MASTER_GPIO_SS to SPI_CONTROLLER_GPIO_SS
2023-07-11 14:12:56 +01:00
spi-atmel.c
spi: atmel: Fix clock issue when using devices with different polarities
2024-01-01 12:42:44 +00:00
spi-au1550.c
spi: au1550: switch to use modern name
2023-08-14 13:10:49 +01:00
spi-axi-spi-engine.c
spi: axi-spi-engine: fix version format string
2024-05-17 12:02:01 +02:00
spi-bcm63xx-hsspi.c
spi: bcm63xx-hsspi: fix shared reset
2025-06-19 15:28:32 +02:00
spi-bcm63xx.c
spi: bcm63xx: fix premature CS deassertion on RX-only transactions
2025-12-07 06:18:50 +09:00
spi-bcm2835.c
spi: switch to use modern name
2023-08-07 21:59:25 +01:00
spi-bcm2835aux.c
spi: switch to use modern name
2023-08-07 21:59:25 +01:00
spi-bcm-qspi.c
spi: bcm-qspi: fix SFDP BFPT read by usig mspi read
2024-01-31 16:19:13 -08:00
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: Fix missing pm_runtime_disable()
2024-10-04 16:29:03 +02:00
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: cadence-quadspi: Fix clock disable on probe failure path
2026-01-11 15:21:49 +01:00
spi-cadence-xspi.c
spi: cadence: Ensure data lines set to low during dummy-cycle period
2024-07-11 12:49:21 +02:00
spi-cadence.c
spi: spi-cadence: Fix missing spi_controller_is_target() check
2024-10-10 11:57:40 +02:00
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: switch to use modern name
2023-08-07 14:38:30 +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
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
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: Remove an erroneous clk_disable_unprepare() from the remove function
2024-01-25 15:35:55 -08:00
spi-cs42l43.c
spi: cs42l43: Correct SPI root clock speed
2024-06-27 13:49:08 +02:00
spi-davinci.c
spi: davinci: switch to use modern name
2023-08-07 14:38:31 +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: Convert to platform remove callback returning void
2023-03-06 12:31:21 +00:00
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: keep old name same as documentation
2023-08-16 12:58:07 +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: 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
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
spi-fsl-dspi.c
spi: spi-fsl-dspi: Clear completion counter before initiating transfer
2025-07-10 16:03:09 +02:00
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: spi-fsl-lpspi: Clear status register after disabling the module
2025-09-09 18:56:33 +02:00
spi-fsl-qspi.c
spi: fsl-qspi: Fix double cleanup in probe error path
2025-09-09 18:56:35 +02:00
spi-fsl-spi.c
spi: fsl-cpm: Check length parity before switching to 16 bit mode
2026-01-11 15:21:50 +01:00
spi-fsl-spi.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
spi-geni-qcom.c
spi: geni-qcom: Fix boot warning related to pm_runtime and devres
2024-11-08 16:28:17 +01:00
spi-gpio.c
spi: gpio: switch to use modern name
2023-08-14 13:10:57 +01:00
spi-gxp.c
spi: spi-gxp: BUG: Correct spi write return value
2023-09-27 17:06:36 +02:00
spi-hisi-kunpeng.c
spi: hisi-kunpeng: Add verification for the max_frequency provided by the firmware
2024-09-12 11:11:38 +02:00
spi-hisi-sfc-v3xx.c
spi: hisi-sfc-v3xx: Return IRQ_NONE if no interrupts were detected
2024-03-01 13:34:49 +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: keep dma request disabled before dma transfer setup
2026-01-11 15:21:08 +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: Add Panther Lake SPI controller support
2025-01-02 10:32:05 +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: intel: switch to use modern name
2023-08-14 13:11:04 +01:00
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: 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: switch to use modern name
2023-08-14 13:11:06 +01:00
spi-lm70llp.c
spi: lm70llp: add parenthesis for sizeof
2021-05-20 18:00:34 +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: loopback-test: Don't use %pK through printk
2025-11-24 10:29:17 +01:00
spi-lp8841-rtc.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-mem.c
spi: spi-mem: Add a new controller capability
2025-12-07 06:18:50 +09:00
spi-meson-spicc.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-meson-spifc.c
spi: meson-spifc: Convert to platform remove callback returning void
2023-03-06 12:31:33 +00:00
spi-microchip-core-qspi.c
spi: microchip-core-qspi: fix setting spi bus clock rate
2024-05-17 12:02:36 +02:00
spi-microchip-core.c
spi: microchip-core: ensure TX and RX FIFOs are empty at start of a transfer
2024-08-03 08:54:40 +02:00
spi-mpc52xx-psc.c
spi: spi-mpc52xx-psc: Fix an unsigned comparison that can never be negative
2023-08-07 18:37:54 +01:00
spi-mpc52xx.c
spi: mpc52xx: Add cancel_work_sync before module remove
2024-12-14 19:59:49 +01:00
spi-mpc512x-psc.c
spi: mpc5xxx-psc: Fix unsigned expression compared with zero
2023-08-03 17:07:09 +01:00
spi-mt65xx.c
spi: spi-mt65xx: Fix NULL pointer access in interrupt handler
2024-03-26 18:20:13 -04:00
spi-mt7621.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-mtk-nor.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-mtk-snfi.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +01:00
spi-mux.c
spi: mux: set ctlr->bits_per_word_mask
2024-07-25 09:50:56 +02:00
spi-mxic.c
spi: Replace all spi->chip_select and spi->cs_gpiod references with function call
2023-03-11 12:34:01 +00:00
spi-mxs.c
spi-mxs: Fix chipselect glitch
2025-03-13 12:58:40 +01:00
spi-npcm-fiu.c
spi: npcm-fiu: Fix UMA reads when dummy.nbytes == 0
2023-10-02 15:03:19 +01:00
spi-npcm-pspi.c
spi: npcm-pspi: Convert to platform remove callback returning void
2023-03-06 21:17:50 +00:00
spi-nxp-fspi.c
spi: nxp-fspi: Propagate fwnode in ACPI case as well
2025-12-07 06:18:50 +09:00
spi-oc-tiny.c
spi: oc-tiny: Convert to platform remove callback returning void
2023-03-06 21:17:51 +00:00
spi-omap2-mcspi.c
spi: omap2-mcspi: Correctly handle devm_clk_get_optional() errors
2025-02-08 09:52:22 +01:00
spi-omap-uwire.c
spi: Convert to SPI_CONTROLLER_HALF_DUPLEX
2023-07-11 14:14:31 +01:00
spi-orion.c
spi: orion: switch to use modern name
2023-08-21 14:29:18 +01:00
spi-pci1xxxx.c
spi: mchp-pci1xxx: Fix a possible null pointer dereference in pci1xxx_spi_probe
2024-04-10 16:36:01 +02:00
spi-pic32-sqi.c
spi: pic32-sqi: switch to use modern name
2023-08-21 14:29:20 +01:00
spi-pic32.c
spi: pic32: switch to use modern name
2023-08-21 14:29:21 +01:00
spi-pl022.c
spi: spl022: switch to use modern name
2023-08-21 14:29:22 +01:00
spi-ppc4xx.c
spi: ppc4xx: Avoid returning 0 when failed to parse and map IRQ
2024-10-04 16:29:02 +02:00
spi-pxa2xx-dma.c
spi: pxa2xx: Fix style of and typos in the comments and messages
2021-05-18 14:05:35 +01:00
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: pxa2xx: Get rid of unused ->cs_control()
2021-11-29 12:19:59 +00:00
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: switch to use modern name
2023-08-21 14:29:26 +01:00
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: Fix register out of bounds access
2025-06-04 14:41:55 +02:00
spi-rpc-if.c
spi: rpc-if: Add resume support for RZ/G3E
2025-11-24 10:29:22 +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: switch to use devm_spi_alloc_host()
2023-08-21 14:29:31 +01:00
spi-s3c64xx.c
spi: s3c64xx: fix timeout counters in flush_fifo
2024-10-10 11:57:40 +02:00
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: Fix maximum DMA transfer size
2025-06-19 15:28:05 +02:00
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: 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: sn-f-ospi: Fix division by zero
2025-02-21 13:57:06 +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: stm32: qspi: Clamp stm32_qspi_get_mode() output to CCR_BUSWIDTH_4
2024-06-27 13:49:14 +02:00
spi-stm32.c
spi: stm32: Check for cfg availability in stm32_spi_probe
2025-08-15 12:08:42 +02:00
spi-sun4i.c
spi: spi-sun4i: fix early activation
2025-06-04 14:42:25 +02:00
spi-sun6i.c
Merge tag 'spi-fix-v6.6-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
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()
2023-11-20 11:59:04 +01:00
spi-tegra114.c
spi: tegra114: Use value to check for invalid delays
2025-05-22 14:12:22 +02:00
spi-tegra210-quad.c
spi: tegra210-quad: Fix timeout handling
2026-01-11 15:21:20 +01:00
spi-test.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157
2019-05-30 11:26:37 -07:00
spi-ti-qspi.c
spi: Explicitly include correct DT includes
2023-07-14 20:53:00 +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: 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: increase number of retries before declaring stall
2026-01-11 15:21:08 +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: zynq-qspi: Add check for clk_enable()
2025-02-08 09:51:50 +01:00
spi-zynqmp-gqspi.c
spi: zynqmp-gqspi: Always acknowledge interrupts
2025-06-04 14:42:15 +02:00
spi.c
spi: Try to get ACPI GPIO IRQ earlier
2025-11-24 10:30:08 +01:00
spidev.c
spi: spidev: Add missing spi_device_id for jg10309-01
2024-09-30 16:25:12 +02:00