From: Long Li <lon...@microsoft.com>
Unlike SCSI and FC, we don't use multiple channels for IDE. So set queue depth
correctly for IDE.
Also set the correct cmd_per_lun for all devices.
Signed-off-by: Long Li <lon...@microsoft.com>
---
drivers/scsi/storvsc_drv.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 8c51d628b52e..fba170640e9c 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1722,15 +1722,19 @@ 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 / storvsc_vcpus_per_sub_channel;
}
scsi_driver.can_queue = (max_outstanding_req_per_channel *
(max_sub_channels + 1));
+ scsi_driver.cmd_per_lun = scsi_driver.can_queue;
host = scsi_host_alloc(&scsi_driver,
sizeof(struct hv_host_device));
--
2.14.1
