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Commit f286299c authored by Long Li's avatar Long Li Committed by Martin K. Petersen
Browse files

scsi: storvsc: Set up correct queue depth values for IDE devices 



Unlike SCSI and FC, we don't use multiple channels for IDE.  Also fix
the calculation for sub-channels.

Signed-off-by: default avatarLong Li <longli@microsoft.com>
Reviewed-by: default avatarMichael Kelley <mikelley@microsoft.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 8e1ceafe

drivers/scsi/storvsc_drv.c

+5 −2
Original line number Diff line number Diff line
@@ -1722,11 +1722,14 @@ static int storvsc_probe(struct hv_device *device, 
		max_targets = STORVSC_MAX_TARGETS;

		max_channels = STORVSC_MAX_CHANNELS;

		/*

		 * On Windows8 and above, we support sub-channels for storage.

		 * On Windows8 and above, we support sub-channels for storage

		 * on SCSI and FC controllers.

		 * The number of sub-channels offerred is based on the number of

		 * VCPUs in the guest.

		 */

		max_sub_channels = (num_cpus / storvsc_vcpus_per_sub_channel);

		if (!dev_is_ide)

			max_sub_channels =

				(num_cpus - 1) / storvsc_vcpus_per_sub_channel;

	}



	scsi_driver.can_queue = (max_outstanding_req_per_channel *