Re: [PATCH 3/3] ata: libata-scsi: Use ata_ncq_supported in ata_scsi_dev_config()

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On 6/5/23 03:32, Damien Le Moal wrote:
In ata_scsi_dev_config(), instead of hardconing the test to check if
an ATA device supports NCQ by looking at the ATA_DFLAG_NCQ flag, use
ata_ncq_supported().

Signed-off-by: Damien Le Moal <dlemoal@xxxxxxxxxx>
---
  drivers/ata/libata-scsi.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/ata/libata-scsi.c b/drivers/ata/libata-scsi.c
index 8ce90284eb34..22e2e9ab6b60 100644
--- a/drivers/ata/libata-scsi.c
+++ b/drivers/ata/libata-scsi.c
@@ -1122,7 +1122,7 @@ int ata_scsi_dev_config(struct scsi_device *sdev, struct ata_device *dev)
  	if (dev->flags & ATA_DFLAG_AN)
  		set_bit(SDEV_EVT_MEDIA_CHANGE, sdev->supported_events);
- if (dev->flags & ATA_DFLAG_NCQ)
+	if (ata_ncq_supported(dev))
  		depth = min(sdev->host->can_queue, ata_id_queue_depth(dev->id));
  	depth = min(ATA_MAX_QUEUE, depth);
  	scsi_change_queue_depth(sdev, depth);

Argh. ATA NCQ flags. We have ATA_DFLAG_NCQ, ATA_DFLAG_PIO, ATA_DFLAG_NCQ_OFF (and maybe even more which I forgot about).
Can we please move them into some more descriptive, ie which flags
are for the drive capabilities (ie _can_ the drive do NCQ) and
the current current drive status (ie _does_ the drive do NCQ)?
As it stands it's quite confusing.

But probably not a problem with this patch, so:

Reviewed-by: Hannes Reinecke <hare@xxxxxxx>

Cheers,

Hannes
--
Dr. Hannes Reinecke                Kernel Storage Architect
hare@xxxxxxx                              +49 911 74053 688
SUSE Software Solutions GmbH, Maxfeldstr. 5, 90409 Nürnberg
HRB 36809 (AG Nürnberg), Geschäftsführer: Ivo Totev, Andrew
Myers, Andrew McDonald, Martje Boudien Moerman




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