IB/core: Allow QP state transition from reset to error
authorTadeusz Struk <tadeusz.struk@intel.com>
Tue, 30 May 2017 00:20:53 +0000 (17:20 -0700)
committerDoug Ledford <dledford@redhat.com>
Tue, 18 Jul 2017 01:21:30 +0000 (21:21 -0400)
commitebc9ca43e1d52a85c72fc2d343f353386ed6c188
treee62f351cdd802a91d5a5cfea8b8db4c1e15963da
parent5f110ac4bed8693adb21146067149a48c2b9bd07
IB/core: Allow QP state transition from reset to error

Playing with IP-O-IB interface can trigger a warning message:
"ib0: Failed to modify QP to ERROR state" to be logged.
This happens when the QP is in IB_QPS_RESET state and the stack
is trying to transition it to IB_QPS_ERR state in ipoib_ib_dev_stop().

According to the IB spec, Table 91 - "QP State Transition Properties"
it looks like the transition from reset to error is valid:

Transition: Any State to Error
Required Attributes: None
Optional Attributes: None allowed
Actions: Queue processing is stopped. Work Requests pending or in
process are completed in error, when possible.

This patch allows the transition and quiets the message.

Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
drivers/infiniband/core/verbs.c