tree 8b7c6045d6ec346ccf8a4d845877ba656b6f0dc4
parent e1d7806df32bd247af6a2fe52433ecdd34fee773
author Jack Morgenstein <jackm@dev.mellanox.co.il> 1252207464 -0700
committer Roland Dreier <rolandd@cisco.com> 1252207464 -0700

IB/uverbs: Return ENOSYS for unimplemented commands (not EINVAL)

Since the original commit 883a99c7 ("[IB] uverbs: Add a mask of device
methods allowed for userspace"), the uverbs core returns EINVAL for
commands not implemented by a specific low-level driver.

This creates a problem that there is no way to tell the difference
between an unimplemented command and an implemented one which is
incorrectly invoked (which also returns EINVAL).

The fix is to have unimplemented commands return ENOSYS.

Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>