On 9/2/2016 3:39 PM, Uma Krishnan wrote:
From: "Matthew R. Ochs" <mro...@linux.vnet.ibm.com>

The EEH reset handler is ignorant to the current state of the
driver when processing a frozen event and initiating a device
reset. This can be an issue if an EEH event occurs while a user
or stack initiated reset is executing. More specifically, if an
EEH occurs while the SCSI host reset handler is active, the reset
initiated by the EEH thread will likely collide with the host reset
thread. This can leave the device in an inconsistent state, or worse,
cause a system crash.

As a remedy, the EEH handler is updated to evaluate the device state
and take appropriate action (proceed, wait, or disconnect host). The
host reset handler is also updated to handle situations where an EEH
occurred during a host reset. In such situations, the host reset handler
will delay reporting back a success to give the EEH reset an opportunity
to complete.

Signed-off-by: Matthew R. Ochs <mro...@linux.vnet.ibm.com>

Acked-by: Uma Krishnan <ukri...@linux.vnet.ibm.com>

Reply via email to