Hi Wolfram,
On Wednesday 09 April 2014 06:07 PM, Wolfram Sang wrote:
On Wed, Apr 09, 2014 at 04:06:48PM +0530, Sourav Poddar wrote:
I2c core supports defualt probing functionality for devices not registered through
dt/board files. If there are any client driver registered, i2c core will try to
check if there is any device present corresponding to the address supplied by
the client driver. If the device is actually present and not registered, core
will register it, else the device default probe will fail and we get a omap i2c controller
specific timeout messages.
For example, Using multi_v7_config on omap5-uevm, CONFIG_SENSORS_LM90 and CONFIG_ICS932S401
is the driver which is enabled and gets registered. I2c core tries to find a valid
corresponding device on each of the address supplied by registered driver,
but could not find anyone. Hence, keep dumping the controller timeout speciic message.
This is exactly why I2C_CLASS_DEPRECATED was implemented. So, users
which are using classes can migrate away. But this needs time. Given
that I2C_CLASS_DEPRECATED is new in 3.15, I'd think setting classes to 0
(thus totally disabling them) should not be before 3.17. You don't need
to resend, I'll do it for all drivers I added this new class to when I
feel it is safe to do.
OK then, I am dropping this patch, will wait for your patches on it.
Thanks for the review.
~Sourav
Thanks,
Wolfram
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