On Wed, Sep 21, 2016 at 11:03:35PM +0200, Wolfram Sang wrote: > 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 <jglauber@xxxxxxxxxx> > > I didn't really check, but have you considered using > readq_poll_timeout() from iopoll.h? > Indeed, readq_poll_timeout() fits quite well here. It will lose some cycles on mips but I'm not convinced that matters with i2c. That would be the first user of readq_poll_timeout() in the kernel :) --Jan -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
