On Fri, 13 Apr 2012 19:47:53 +0800, Daniel Kurtz <djkurtz at chromium.org> wrote: > A common method of probing an i2c bus is trying to do a zero-length read. > Handle this case by checking the length first waiting for data to be read. > > This is actually important, since attempting a zero-length read is one > of the ways that i2cdetect and i2c_new_probed_device detect whether > there is device present on the bus with a given address. > > Signed-off-by: Daniel Kurtz <djkurtz at chromium.org>
You earlier assuaged my fears that setting SW_READY without waiting would anger the hw, so Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk> -Chris -- Chris Wilson, Intel Open Source Technology Centre
