On Wed, Sep 21, 2016 at 08:51:06AM +0200, Jan Glauber wrote:
> Do not infinitely retry register readq and writeq operations
> in order to not lock up the CPU in case the TWSI gets stuck.
> 
> Return -EIO in case of a failed data read. For all other
> cases just return so subsequent operations will fail
> and trigger the recovery.
> 
> Signed-off-by: Jan Glauber <jglau...@cavium.com>

I didn't really check, but have you considered using
readq_poll_timeout() from iopoll.h?

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