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scsi: scsi_transport_spi: Set RQF_PM for domain validation commands

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Disable runtime power management during domain validation. Since a later
patch removes RQF_PREEMPT, set RQF_PM for domain validation commands such
that these are executed in the quiesced SCSI device state.

Link: https://lore.kernel.org/r/20201209052951.16136-6-bvanassche@acm.org
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Woody Suwalski <terraluna977@gmail.com>
Cc: Can Guo <cang@codeaurora.org>
Cc: Stanley Chu <stanley.chu@mediatek.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Stan Johnson <userm57@yahoo.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Bart Van Assche 2020-12-08 21:29:48 -08:00 committed by Martin K. Petersen
parent 5ae65383fc
commit cfefd9f824
1 changed files with 19 additions and 8 deletions
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27
drivers/scsi/scsi_transport_spi.c
View File

@ -117,12 +117,16 @@ static int spi_execute(struct scsi_device *sdev, const void *cmd,
sshdr = &sshdr_tmp;
for(i = 0; i < DV_RETRIES; i++) {
/*
* The purpose of the RQF_PM flag below is to bypass the
* SDEV_QUIESCE state.
*/
result = scsi_execute(sdev, cmd, dir, buffer, bufflen, sense,
sshdr, DV_TIMEOUT, /* retries */ 1,
REQ_FAILFAST_DEV |
REQ_FAILFAST_TRANSPORT |
REQ_FAILFAST_DRIVER,
0, NULL);
RQF_PM, NULL);
if (driver_byte(result) != DRIVER_SENSE ||
sshdr->sense_key != UNIT_ATTENTION)
break;
@ -1005,23 +1009,26 @@ spi_dv_device(struct scsi_device *sdev)
*/
lock_system_sleep();
if (scsi_autopm_get_device(sdev))
goto unlock_system_sleep;
if (unlikely(spi_dv_in_progress(starget)))
goto unlock;
goto put_autopm;
if (unlikely(scsi_device_get(sdev)))
goto unlock;
goto put_autopm;
spi_dv_in_progress(starget) = 1;
buffer = kzalloc(len, GFP_KERNEL);
if (unlikely(!buffer))
goto out_put;
goto put_sdev;
/* We need to verify that the actual device will quiesce; the
* later target quiesce is just a nice to have */
if (unlikely(scsi_device_quiesce(sdev)))
goto out_free;
goto free_buffer;
scsi_target_quiesce(starget);
@ -1041,12 +1048,16 @@ spi_dv_device(struct scsi_device *sdev)
spi_initial_dv(starget) = 1;
out_free:
free_buffer:
kfree(buffer);
out_put:
put_sdev:
spi_dv_in_progress(starget) = 0;
scsi_device_put(sdev);
unlock:
put_autopm:
scsi_autopm_put_device(sdev);
unlock_system_sleep:
unlock_system_sleep();
}
EXPORT_SYMBOL(spi_dv_device);