Tejun Heo wrote:
Not all controllers have single TF image and ops->tf_read() is
inappropriate for them. Newly implemented hotplug probing will allow
drivers for such controllers to get rid of ops->tf_read() completely.
Make ops->tf_read() optional in core layer.
Signed-off-by: Tejun Heo <htejun@xxxxxxxxx>
NAK.
At the present time, the controller model expects to be able to obtain
correct values from the shadow registers. For FIS-based controllers,
this may imply that the driver needs to maintain an accurate shadow
register image, if the chip doesn't automatically supply one.
I think this is a quite reasonable expectation, given that ATA continues
to have specifically defined shadow register outputs, and even in the
face of NCQ, we have defined states where the shadow registers are
available.
On this basis, attempts to make ->check_status() optional are also NAK'd.
Jeff
-
: send the line "unsubscribe linux-ide" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
