diff options
Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
| -rw-r--r-- | drivers/scsi/storvsc_drv.c | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index 8472de1007ff..c2b6a0ca6933 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -1,19 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2009, Microsoft Corporation. * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., 59 Temple - * Place - Suite 330, Boston, MA 02111-1307 USA. - * * Authors: * Haiyang Zhang <haiyangz@microsoft.com> * Hank Janssen <hjanssen@microsoft.com> @@ -387,6 +375,7 @@ enum storvsc_request_type { static int storvsc_ringbuffer_size = (128 * 1024); static u32 max_outstanding_req_per_channel; +static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth); static int storvsc_vcpus_per_sub_channel = 4; @@ -1711,6 +1700,7 @@ static struct scsi_host_template scsi_driver = { .dma_boundary = PAGE_SIZE-1, .no_write_same = 1, .track_queue_depth = 1, + .change_queue_depth = storvsc_change_queue_depth, }; enum { @@ -1917,6 +1907,15 @@ err_out0: return ret; } +/* Change a scsi target's queue depth */ +static int storvsc_change_queue_depth(struct scsi_device *sdev, int queue_depth) +{ + if (queue_depth > scsi_driver.can_queue) + queue_depth = scsi_driver.can_queue; + + return scsi_change_queue_depth(sdev, queue_depth); +} + static int storvsc_remove(struct hv_device *dev) { struct storvsc_device *stor_device = hv_get_drvdata(dev); |