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mirror-linux/drivers/i2c
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LI Qingwu b126097b03 i2c: imx: preserve error state in block data length handler 
When a block read returns an invalid length, zero or >I2C_SMBUS_BLOCK_MAX,
the length handler sets the state to IMX_I2C_STATE_FAILED. However,
i2c_imx_master_isr() unconditionally overwrites this with
IMX_I2C_STATE_READ_CONTINUE, causing an endless read loop that overruns
buffers and crashes the system.

Guard the state transition to preserve error states set by the length
handler.

Fixes: 5f5c2d4579 ("i2c: imx: prevent rescheduling in non dma mode")
Signed-off-by: LI Qingwu <Qing-wu.Li@leica-geosystems.com.cn>
Cc: <stable@vger.kernel.org> # v6.13+
Reviewed-by: Stefan Eichenberger <eichest@gmail.com>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
Link: https://lore.kernel.org/r/20260116111906.3413346-2-Qing-wu.Li@leica-geosystems.com.cn
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
 		2026-02-03 21:47:48 +01:00
..
algos i2c: pcf8584: Change pcf_doAdress() to pcf_send_address() 2025-10-28 17:05:39 +01:00
busses i2c: imx: preserve error state in block data length handler 2026-02-03 21:47:48 +01:00
muxes i2c: muxes: pca954x: Fix broken reset-gpio usage 2025-11-03 18:04:15 +01:00
Kconfig
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Makefile
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i2c-atr.c i2c: use inclusive callbacks in struct i2c_algorithm 2025-06-12 10:05:31 +02:00
i2c-boardinfo.c Revert "i2c: boardinfo: Annotate code used in init phase only" 2025-10-11 23:57:33 +02:00
i2c-core-acpi.c i2c: Force DLL0945 touchpad i2c freq to 100khz 2025-08-03 22:36:42 +02:00
i2c-core-base.c i2c: core: Drop dev_pm_domain_detach() call 2025-09-13 00:21:47 +02:00
i2c-core-of-prober.c
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i2c-core-of.c i2c: core: Do not dereference fwnode in struct device 2025-04-16 18:08:32 +02:00
i2c-core-slave.c i2c: core: Use fwnode_for_each_child_node_scoped() 2025-09-10 14:49:45 +02:00
i2c-core-smbus.c i2c: Use str_read_write() helper 2025-05-23 17:28:07 +02:00
i2c-core.h i2c: Unexport i2c_of_match_device() 2025-02-13 16:47:52 +01:00
i2c-dev.c
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i2c-mux.c i2c: mux: Simplify boolean assignment in i2c_mux_alloc 2025-09-25 23:49:08 +02:00
i2c-slave-eeprom.c sysfs: treewide: switch back to bin_attribute::read()/write() 2025-06-17 10:44:13 +02:00
i2c-slave-testunit.c
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i2c-smbus.c i2c: smbus: introduce Write Disable-aware SPD instantiating functions 2025-05-19 22:23:57 +02:00
i2c-stub.c
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