Hi,
i2c controller drivers used to assume bus number 0 when none (-1) was specified.
This worked on non-device tree systems, where one could explicitly specify
bus number via platform data. On DT-enabled systems bus number is always -1.
Some drivers assume bus number 0 when -1 is specified. This patchset kills
this logic and switches to dynamic bus allocation (default when -1 is provided[1]).
[ I've found out this when I've tried to instantiate more than one i2c-gpio
instance on DT-enabled system. I've, hopefully, fixed few other drivers too. ]
[1] Introduced by Grant Likely in 488bf314b ("i2c: Allow i2c_add_numbered_adapter()
to assign a bus id")
Karol Lewandowski (2):
i2c-pxa: Drop leftover comment
i2c: Dynamically assign adapter id if it wasn't explictly specified
drivers/i2c/busses/i2c-gpio.c | 7 +------
drivers/i2c/busses/i2c-octeon.c | 2 +-
drivers/i2c/busses/i2c-pca-platform.c | 2 +-
drivers/i2c/busses/i2c-pxa.c | 5 -----
drivers/i2c/busses/i2c-versatile.c | 9 ++-------
5 files changed, 5 insertions(+), 20 deletions(-)
--
1.7.9
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