Petri Gynther cd823db8b1 i2c/pca954x: Initialize the mux to disconnected state ... pca954x power-on default is channel 0 connected. If multiple pca954x muxes are connected to the same physical I2C bus, the parent bus will see channel 0 devices behind both muxes by default. This is bad. Scenario: -- pca954x @ 0x70 -- ch 0 (I2C-bus-101) -- EEPROM @ 0x50 | I2C-bus-1 --- | -- pca954x @ 0x71 -- ch 0 (I2C-bus-111) -- EEPROM @ 0x50 1. Load I2C bus driver: creates I2C-bus-1 2. Load pca954x driver: creates virtual I2C-bus-101 and I2C-bus-111 3. Load eeprom driver 4. Try to read EEPROM @ 0x50 on I2C-bus-101. The transaction will also bleed onto I2C-bus-111 because pca954x @ 0x71 channel 0 is connected by default. Fix: Initialize pca954x to disconnected state in pca954x_probe() Signed-off-by: Petri Gynther <pgynther@google.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@kernel.org		2011-06-29 11:36:11 +02:00
..
algos	i2c-algo-bit: Call pre/post_xfer for bit_test	2011-04-17 10:20:19 +02:00
busses	i2c-taos-evm: Fix log messages	2011-06-29 11:36:10 +02:00
muxes	i2c/pca954x: Initialize the mux to disconnected state	2011-06-29 11:36:11 +02:00
i2c-boardinfo.c	i2c-boardinfo: Fix typo in comment	2011-03-20 14:50:52 +01:00
i2c-core.c	i2c: Improve deprecation warnings	2011-04-17 10:20:19 +02:00
i2c-core.h
i2c-dev.c	i2c-dev: Use standard bus notification mechanism	2011-03-20 14:50:52 +01:00
i2c-mux.c
i2c-smbus.c
Kconfig
Makefile	i2c: Deprecate i2c_driver.attach_adapter and .detach_adapter	2011-03-20 14:50:53 +01:00