[PATCH 08/14 v5] drm/i915/intel_i2c: handle zero-length writes

2012-03-28 Thread Daniel Kurtz
A common method of probing an i2c bus is trying to do a zero-length write. Handle this case by checking the length first before decrementing it. This is actually important, since attempting a zero-length write is one of the ways that i2cdetect and i2c_new_probed_device detect whether there is devi

[PATCH 08/14 v5] drm/i915/intel_i2c: handle zero-length writes

2012-03-28 Thread Daniel Kurtz
A common method of probing an i2c bus is trying to do a zero-length write. Handle this case by checking the length first before decrementing it. This is actually important, since attempting a zero-length write is one of the ways that i2cdetect and i2c_new_probed_device detect whether there is devi