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linux-stable/drivers/i2c
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Tali Perry 8947efc077 i2c: npcm7xx: Clear LAST bit after a failed transaction. 
Due to a HW issue, in some scenarios the LAST bit might remain set.
This will cause an unexpected NACK after reading 16 bytes on the next
read.

Example: if user tries to read from a missing device, get a NACK,
then if the next command is a long read ( > 16 bytes),
the master will stop reading after 16 bytes.
To solve this, if a command fails, check if LAST bit is still
set. If it does, reset the module.

Fixes: 56a1485b10 (i2c: npcm7xx: Add Nuvoton NPCM I2C controller driver)
Signed-off-by: Tali Perry <tali.perry1@gmail.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2020-09-27 20:05:27 +02:00
..
algos i2c: algo: pca: Reapply i2c bus settings after reset 2020-09-09 10:22:40 +02:00
busses i2c: npcm7xx: Clear LAST bit after a failed transaction. 2020-09-27 20:05:27 +02:00
muxes Merge branch 'i2c/for-current-fixed' into i2c/for-5.8 2020-05-20 15:27:45 +02:00
i2c-boardinfo.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
i2c-core-acpi.c i2c: acpi: Remove dead code, i.e. i2c_acpi_match_device() 2020-08-25 09:22:09 +02:00
i2c-core-base.c i2c: core: Call i2c_acpi_install_space_handler() before i2c_acpi_register_devices() 2020-09-17 23:16:59 +02:00
i2c-core-of.c i2c: use my kernel.org address from now on 2020-05-05 16:29:09 +02:00
i2c-core-slave.c i2c: slave: add sanity check when unregistering 2020-07-28 18:37:17 +02:00
i2c-core-smbus.c i2c: core: check returned size of emulated smbus block read 2020-06-26 10:18:35 +02:00
i2c-core.h i2c: acpi: Remove dead code, i.e. i2c_acpi_match_device() 2020-08-25 09:22:09 +02:00
i2c-dev.c i2c: Use separate MODULE_AUTHOR() statements for multiple authors 2020-07-04 08:25:13 +02:00
i2c-mux.c i2c: mux: add sysfs header 2019-06-22 07:32:33 +02:00
i2c-slave-eeprom.c i2c: busses: Use fallthrough pseudo-keyword 2020-07-23 22:04:08 +02:00
i2c-smbus.c i2c: smbus: Add a way to instantiate SPD EEPROMs automatically 2020-05-29 12:53:04 +02:00
i2c-stub.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157 2019-05-30 11:26:37 -07:00
Kconfig i2c: add Kconfig help text for slave mode 2020-07-04 08:17:53 +02:00
Makefile i2c: don't use any __deprecated handling anymore 2018-08-24 17:26:43 +02:00