Guenter Roeck f6c29f710c i2c: smbus: Send alert notifications to all devices if source not found ... If a SMBus alert is received and the originating device is not found, the reason may be that the address reported on the SMBus alert address is corrupted, for example because multiple devices asserted alert and do not correctly implement SMBus arbitration. If this happens, call alert handlers on all devices connected to the given I2C bus, in the hope that this cleans up the situation. This change reliably fixed the problem on a system with multiple devices on a single bus. Example log where the device on address 0x18 (ADM1021) and on address 0x4c (ADT7461A) both had the alert line asserted: smbus_alert 3-000c: SMBALERT# from dev 0x0c, flag 0 smbus_alert 3-000c: no driver alert()! smbus_alert 3-000c: SMBALERT# from dev 0x0c, flag 0 smbus_alert 3-000c: no driver alert()! lm90 3-0018: temp1 out of range, please check! lm90 3-0018: Disabling ALERT# lm90 3-0029: Everything OK lm90 3-002a: Everything OK lm90 3-004c: temp1 out of range, please check! lm90 3-004c: temp2 out of range, please check! lm90 3-004c: Disabling ALERT# Fixes: b5527a7766 ("i2c: Add SMBus alert support") Signed-off-by: Guenter Roeck <linux@roeck-us.net> [wsa: fixed a typo in the commit message] Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>		2024-08-04 16:29:34 +02:00
..
algos	i2c: algo: bit: allow getsda to be NULL	2023-01-23 23:15:49 +01:00
busses	i2c: piix4: Register SPDs	2024-07-20 13:29:10 +02:00
muxes	i2c: mux: gpio: Add support for the 'settle-time-us' property	2024-07-20 03:07:55 +02:00
i2c-atr.c	i2c: Annotate struct i2c_atr with __counted_by	2023-09-24 22:50:25 +02:00
i2c-boardinfo.c	i2c: Remove support for dangling device properties	2021-04-10 21:43:02 +02:00
i2c-core-acpi.c	i2c: acpi: Unbind mux adapters before delete	2024-05-06 09:17:38 +02:00
i2c-core-base.c	Driver core changes for 6.11-rc1	2024-07-25 10:42:22 -07:00
i2c-core-of.c	Char/Misc drivers for 6.4-rc1	2023-04-27 12:07:50 -07:00
i2c-core-slave.c	i2c: add tracepoints for I2C slave events	2022-03-20 00:11:05 +01:00
i2c-core-smbus.c	i2c: smbus: Check for parent device before dereference	2022-02-19 12:37:20 +01:00
i2c-core.h	i2c: core: Fix atomic xfer check for non-preempt config	2024-01-06 14:10:10 +01:00
i2c-dev.c	i2c: dev: Check for I2C_FUNC_I2C before calling i2c_transfer	2024-06-26 12:45:25 +02:00
i2c-mux.c	i2c: mux: Remove class argument from i2c_mux_add_adapter()	2024-05-13 16:13:19 +02:00
i2c-slave-eeprom.c	i2c: Convert drivers to new .probe() callback	2023-03-09 21:59:30 +01:00
i2c-slave-testunit.c	The I2C core gains documentation updates for the testunit, a cleanup	2024-07-19 16:46:26 -07:00
i2c-smbus.c	i2c: smbus: Send alert notifications to all devices if source not found	2024-08-04 16:29:34 +02:00
i2c-stub.c	i2c: stub: Don't let i2c adapters declare I2C_CLASS_SPD support if they support I2C_CLASS_HWMON	2024-01-18 21:10:41 +01:00
Kconfig	i2c: testunit: correct Kconfig description	2024-07-11 11:27:22 +02:00
Makefile	media: i2c: add I2C Address Translator (ATR) support	2023-07-14 13:11:44 +02:00