[PATCH v2 1/5] uas: keep track of command urbs

[Gerd Hoffmann]

Signed-off-by: Gerd Hoffmann <kra...@redhat.com>
---
 drivers/usb/storage/uas.c |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 638cd64..ab66365 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -41,6 +41,7 @@ struct sense_iu_old {
 struct uas_dev_info {
        struct usb_interface *intf;
        struct usb_device *udev;
+       struct usb_anchor cmd_urbs;
        struct usb_anchor sense_urbs;
        struct usb_anchor data_urbs;
        int qdepth, resetting;
@@ -431,6 +432,7 @@ static int uas_submit_task_urb(struct scsi_cmnd *cmnd, 
gfp_t gfp,
        err = usb_submit_urb(urb, gfp);
        if (err)
                goto err;
+       usb_anchor_urb(urb, &devinfo->cmd_urbs);
 
        return 0;
 
@@ -521,18 +523,22 @@ static int uas_submit_urbs(struct scsi_cmnd *cmnd,
 
        if (cmdinfo->state & ALLOC_CMD_URB) {
                cmdinfo->cmd_urb = uas_alloc_cmd_urb(devinfo, gfp, cmnd,
-                                                       cmdinfo->stream);
+                                                    cmdinfo->stream);
                if (!cmdinfo->cmd_urb)
                        return SCSI_MLQUEUE_DEVICE_BUSY;
                cmdinfo->state &= ~ALLOC_CMD_URB;
        }
 
        if (cmdinfo->state & SUBMIT_CMD_URB) {
+               usb_get_urb(cmdinfo->cmd_urb);
                if (usb_submit_urb(cmdinfo->cmd_urb, gfp)) {
                        scmd_printk(KERN_INFO, cmnd,
                                        "cmd urb submission failure\n");
                        return SCSI_MLQUEUE_DEVICE_BUSY;
                }
+               usb_anchor_urb(cmdinfo->cmd_urb, &devinfo->cmd_urbs);
+               usb_put_urb(cmdinfo->cmd_urb);
+               cmdinfo->cmd_urb = NULL;
                cmdinfo->state &= ~SUBMIT_CMD_URB;
                cmdinfo->state |= COMMAND_INFLIGHT;
        }
@@ -670,6 +676,7 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd)
        int err;
 
        devinfo->resetting = 1;
+       usb_kill_anchored_urbs(&devinfo->cmd_urbs);
        usb_kill_anchored_urbs(&devinfo->sense_urbs);
        usb_kill_anchored_urbs(&devinfo->data_urbs);
        err = usb_reset_device(udev);
@@ -868,6 +875,7 @@ static int uas_probe(struct usb_interface *intf, const 
struct usb_device_id *id)
        devinfo->intf = intf;
        devinfo->udev = udev;
        devinfo->resetting = 0;
+       init_usb_anchor(&devinfo->cmd_urbs);
        init_usb_anchor(&devinfo->sense_urbs);
        init_usb_anchor(&devinfo->data_urbs);
        uas_configure_endpoints(devinfo);
@@ -913,6 +921,7 @@ static void uas_disconnect(struct usb_interface *intf)
        struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
 
        scsi_remove_host(shost);
+       usb_kill_anchored_urbs(&devinfo->cmd_urbs);
        usb_kill_anchored_urbs(&devinfo->sense_urbs);
        usb_kill_anchored_urbs(&devinfo->data_urbs);
        uas_free_streams(devinfo);
-- 
1.7.1

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