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scsi: ibmvscsi: Don't send host info in adapter info MAD after LPM 

[ Upstream commit 4919b33b63 ]

The adapter info MAD is used to send the client info and receive the host
info as a response. A persistent buffer is used and as such the client info
is overwritten after the response. During the course of a normal adapter
reset the client info is refreshed in the buffer in preparation for sending
the adapter info MAD.

However, in the special case of LPM where we reenable the CRQ instead of a
full CRQ teardown and reset we fail to refresh the client info in the
adapter info buffer. As a result, after Live Partition Migration (LPM) we
erroneously report the host's info as our own.

[mkp: typos]

Link: https://lore.kernel.org/r/20200603203632.18426-1-tyreld@linux.ibm.com
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tyrel Datwyler 2020-06-03 15:36:32 -05:00 committed by Greg Kroah-Hartman
parent 08d2ea2e23
commit af1f72ad18
1 changed files with 2 additions and 0 deletions
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2
drivers/scsi/ibmvscsi/ibmvscsi.c
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@ -415,6 +415,8 @@ static int ibmvscsi_reenable_crq_queue(struct crq_queue *queue,
int rc = 0;
struct vio_dev *vdev = to_vio_dev(hostdata->dev);
set_adapter_info(hostdata);
/* Re-enable the CRQ */
do {
if (rc)