Commit 6c205a66 authored May 08, 2020 by Kashyap Desai Committed by Martin K. Petersen May 11, 2020

scsi: megaraid_sas: Limit device queue depth to controller queue depth

The driver currently assigns a pre-defined queue depth when the
firmware-provided device queue depth is greater than the controller queue
depth.

Use the controller queue depth if the reported target queue depth is too
large.

Link: https://lore.kernel.org/r/20200508083838.22778-2-chandrakanth.patil@broadcom.com


Signed-off-by: Kashyap Desai <kashyap.desai@broadcom.com>
Signed-off-by: Chandrakanth Patil <chandrakanth.patil@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

parent 79e3520f

drivers/scsi/megaraid/megaraid_sas_base.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -1982,9 +1982,9 @@ static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,

		if (is_target_prop) {
		tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
		if (tgt_device_qd &&
		(tgt_device_qd <= instance->host->can_queue))
		device_qd = tgt_device_qd;
		if (tgt_device_qd)
		device_qd = min(instance->host->can_queue,
		(int)tgt_device_qd);
		}

		if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)