Add new function to unlink and abort requests from the work
list, call it on bus reset and disconnect where we kill all
in-flight urbs. Also reorder calls in disconnect to first
cancel transfers, then remove the scsi hba.
Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
drivers/usb/storage/uas.c | 45 ++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 44 insertions(+), 1 deletions(-)
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c
index 5416f2a..547f96a 100644
--- a/drivers/usb/storage/uas.c
+++ b/drivers/usb/storage/uas.c
@@ -84,6 +84,7 @@ struct uas_cmd_info {
static int uas_submit_urbs(struct scsi_cmnd *cmnd,
struct uas_dev_info *devinfo, gfp_t gfp);
static void uas_do_work(struct work_struct *work);
+static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller);
static DECLARE_WORK(uas_work, uas_do_work);
static DEFINE_SPINLOCK(uas_work_lock);
@@ -145,6 +146,45 @@ static void uas_do_work(struct work_struct *work)
}
}
+static void uas_abort_work(struct uas_dev_info *devinfo)
+{
+ struct uas_cmd_info *cmdinfo;
+ struct uas_cmd_info *temp;
+ struct list_head list;
+ unsigned long flags;
+
+ spin_lock_irq(&uas_work_lock);
+ list_replace_init(&uas_work_list, &list);
+ spin_unlock_irq(&uas_work_lock);
+
+ spin_lock_irqsave(&devinfo->lock, flags);
+ list_for_each_entry_safe(cmdinfo, temp, &list, list) {
+ struct scsi_pointer *scp = (void *)cmdinfo;
+ struct scsi_cmnd *cmnd = container_of(scp,
+ struct scsi_cmnd, SCp);
+ struct uas_dev_info *di = (void *)cmnd->device->hostdata;
+
+ if (di == devinfo) {
+ cmdinfo->state |= COMMAND_ABORTED;
+ cmdinfo->state &= ~IS_IN_WORK_LIST;
+ if (devinfo->resetting) {
+ /* uas_stat_cmplt() will not do that
+ * when a device reset is in
+ * progress */
+ cmdinfo->state &= ~COMMAND_INFLIGHT;
+ }
+ uas_try_complete(cmnd, __func__);
+ } else {
+ /* not our uas device, relink into list */
+ list_del(&cmdinfo->list);
+ spin_lock_irq(&uas_work_lock);
+ list_add_tail(&cmdinfo->list, &uas_work_list);
+ spin_unlock_irq(&uas_work_lock);
+ }
+ }
+ spin_unlock_irqrestore(&devinfo->lock, flags);
+}
+
static void uas_sense(struct urb *urb, struct scsi_cmnd *cmnd)
{
struct sense_iu *sense_iu = urb->transfer_buffer;
@@ -750,6 +790,7 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd)
int err;
devinfo->resetting = 1;
+ uas_abort_work(devinfo);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
@@ -995,10 +1036,12 @@ static void uas_disconnect(struct usb_interface *intf)
struct Scsi_Host *shost = usb_get_intfdata(intf);
struct uas_dev_info *devinfo = (void *)shost->hostdata[0];
- scsi_remove_host(shost);
+ devinfo->resetting = 1;
+ uas_abort_work(devinfo);
usb_kill_anchored_urbs(&devinfo->cmd_urbs);
usb_kill_anchored_urbs(&devinfo->sense_urbs);
usb_kill_anchored_urbs(&devinfo->data_urbs);
+ scsi_remove_host(shost);
uas_free_streams(devinfo);
kfree(devinfo);
}
--
1.7.1
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