Use a TMF_ABORT_TASK TMF_IU in the abort handler,
to deal with commands we need to get rid of.
Signed-off-by: Oliver Neukum <oneu...@suse.com>
---
drivers/usb/storage/uas.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index a8052ec..1b901c8 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -428,6 +428,10 @@ static void uas_cmd_cmplt(struct urb *urb)
usb_free_urb(urb);
}
+static void uas_tmf_cmplt(struct urb *urb)
+{
+}
+
static struct urb *uas_alloc_data_urb(struct uas_dev_info *devinfo, gfp_t gfp,
struct scsi_cmnd *cmnd,
enum dma_data_direction dir)
@@ -715,9 +719,11 @@ static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
{
struct uas_cmd_info *cmdinfo = (void *)&cmnd->SCp;
struct uas_dev_info *devinfo = (void *)cmnd->device->hostdata;
+ struct task_mgmt_iu *tmf = devinfo->tmf_iu;
struct urb *data_in_urb = NULL;
struct urb *data_out_urb = NULL;
unsigned long flags;
+ int err;
spin_lock_irqsave(&devinfo->lock, flags);
@@ -726,6 +732,24 @@ static int uas_eh_abort_handler(struct scsi_cmnd *cmnd)
/* Ensure that try_complete does not call scsi_done */
cmdinfo->state |= COMMAND_ABORTED;
+ usb_fill_bulk_urb(devinfo->management_urb,
+ devinfo->udev,
+ devinfo->cmd_pipe, /* shared */
+ devinfo->tmf_iu,
+ sizeof(devinfo->tmf_iu),
+ uas_tmf_cmplt,
+ cmnd->device->host);
+ tmf->iu_id = IU_ID_TASK_MGMT;
+ tmf->tag = cpu_to_be16(1);
+ tmf->function = TMF_ABORT_TASK;
+ tmf->task_tag = cmdinfo->uas_tag; /* already BE */
+
+ err = usb_submit_urb(devinfo->management_urb, GFP_NOIO);
+ if (err < 0) /* unkillable */
+ goto give_up;
+
+give_up:
+
/* Drop all refs to this cmnd, kill data urbs to break their ref */
devinfo->cmnd[cmdinfo->uas_tag - TAG_OFFSET] = NULL;
if (cmdinfo->state & DATA_IN_URB_INFLIGHT)
--
2.1.4
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