sata_nv: set host can_queue count appropriately

axboe · htejun · commit ba80c3a572f4 · 2018-05-11T13:10:43.000-07:00
libata limits the max limit for drivers to 31 anyway. We'll soon
allow drivers to actually go to QD=32, but that might require some
driver modifications. Before we do that, ensure that sata_nv limits
the depth to 31.

Signed-off-by: Jens Axboe &lt;axboe@kernel.dk&gt;
Signed-off-by: Tejun Heo &lt;tj@kernel.org&gt;
diff --git a/drivers/ata/sata_nv.c b/drivers/ata/sata_nv.c
@@ -400,7 +400,7 @@ static struct scsi_host_template nv_adma_sht = {
 
 static struct scsi_host_template nv_swncq_sht = {
 	ATA_NCQ_SHT(DRV_NAME),
-	.can_queue		= ATA_MAX_QUEUE,
+	.can_queue		= ATA_MAX_QUEUE - 1,
 	.sg_tablesize		= LIBATA_MAX_PRD,
 	.dma_boundary		= ATA_DMA_BOUNDARY,
 	.slave_configure	= nv_swncq_slave_config,
