github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-07 14:04:54 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

USB: uas: Limit qdepth at the scsi-host level

Browse Source 
commit 198de51dbc upstream.

Commit 64d513ac31 ("scsi: use host wide tags by default") causes
the SCSI core to queue more commands then we can handle on devices with
multiple LUNs, limit the queue depth at the scsi-host level instead of
per slave to fix this.

BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1315013
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hans de Goede 2016-04-12 12:27:08 +02:00 committed by Greg Kroah-Hartman
parent c1ea2d028f
commit 4337f6e548
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/usb/storage/uas.c
View File

@ -800,7 +800,6 @@ static int uas_slave_configure(struct scsi_device *sdev)
if (devinfo->flags & US_FL_BROKEN_FUA)
sdev->broken_fua = 1;
scsi_change_queue_depth(sdev, devinfo->qdepth - 2);
return 0;
}
@ -932,6 +931,12 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id)
if (result)
goto set_alt0;
/*
* 1 tag is reserved for untagged commands +
* 1 tag to avoid off by one errors in some bridge firmwares
*/
shost->can_queue = devinfo->qdepth - 2;
usb_set_intfdata(intf, shost);
result = scsi_add_host(shost, &intf->dev);
if (result)