diff options
Diffstat (limited to 'drivers/usb/storage/uas.c')
| -rw-r--r-- | drivers/usb/storage/uas.c | 50 |
1 files changed, 42 insertions, 8 deletions
diff --git a/drivers/usb/storage/uas.c b/drivers/usb/storage/uas.c index 3cf5a5ff3d53..f0490382351d 100644 --- a/drivers/usb/storage/uas.c +++ b/drivers/usb/storage/uas.c @@ -53,6 +53,7 @@ struct uas_dev_info { spinlock_t lock; struct work_struct work; struct list_head work_list; + struct list_head dead_list; }; enum { @@ -80,6 +81,7 @@ struct uas_cmd_info { struct urb *data_in_urb; struct urb *data_out_urb; struct list_head work; + struct list_head dead; }; /* I hate forward declarations, but I actually have a loop */ @@ -89,6 +91,7 @@ static void uas_do_work(struct work_struct *work); static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller); static void uas_configure_endpoints(struct uas_dev_info *devinfo); static void uas_free_streams(struct uas_dev_info *devinfo); +static void uas_log_cmd_state(struct scsi_cmnd *cmnd, const char *caller); static void uas_unlink_data_urbs(struct uas_dev_info *devinfo, struct uas_cmd_info *cmdinfo) @@ -150,16 +153,12 @@ static void uas_abort_work(struct uas_dev_info *devinfo) struct scsi_pointer *scp = (void *)cmdinfo; struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, SCp); + uas_log_cmd_state(cmnd, __func__); + WARN_ON(cmdinfo->state & COMMAND_ABORTED); 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__); list_del(&cmdinfo->work); + list_add_tail(&cmdinfo->dead, &devinfo->dead_list); } spin_unlock_irqrestore(&devinfo->lock, flags); } @@ -176,6 +175,28 @@ static void uas_add_work(struct uas_cmd_info *cmdinfo) schedule_work(&devinfo->work); } +static void uas_zap_dead(struct uas_dev_info *devinfo) +{ + struct uas_cmd_info *cmdinfo; + struct uas_cmd_info *temp; + unsigned long flags; + + spin_lock_irqsave(&devinfo->lock, flags); + list_for_each_entry_safe(cmdinfo, temp, &devinfo->dead_list, dead) { + struct scsi_pointer *scp = (void *)cmdinfo; + struct scsi_cmnd *cmnd = container_of(scp, struct scsi_cmnd, + SCp); + uas_log_cmd_state(cmnd, __func__); + WARN_ON(!(cmdinfo->state & COMMAND_ABORTED)); + /* all urbs are killed, clear inflight bits */ + cmdinfo->state &= ~(COMMAND_INFLIGHT | + DATA_IN_URB_INFLIGHT | + DATA_OUT_URB_INFLIGHT); + uas_try_complete(cmnd, __func__); + } + 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; @@ -263,6 +284,7 @@ static int uas_try_complete(struct scsi_cmnd *cmnd, const char *caller) if (cmdinfo->state & COMMAND_ABORTED) { scmd_printk(KERN_INFO, cmnd, "abort completed\n"); cmnd->result = DID_ABORT << 16; + list_del(&cmdinfo->dead); } cmnd->scsi_done(cmnd); return 0; @@ -292,7 +314,13 @@ static void uas_stat_cmplt(struct urb *urb) u16 tag; if (urb->status) { - dev_err(&urb->dev->dev, "URB BAD STATUS %d\n", urb->status); + if (urb->status == -ENOENT) { + dev_err(&urb->dev->dev, "stat urb: killed, stream %d\n", + urb->stream_id); + } else { + dev_err(&urb->dev->dev, "stat urb: status %d\n", + urb->status); + } usb_free_urb(urb); return; } @@ -743,7 +771,9 @@ static int uas_eh_abort_handler(struct scsi_cmnd *cmnd) uas_log_cmd_state(cmnd, __func__); spin_lock_irqsave(&devinfo->lock, flags); + WARN_ON(cmdinfo->state & COMMAND_ABORTED); cmdinfo->state |= COMMAND_ABORTED; + list_add_tail(&cmdinfo->dead, &devinfo->dead_list); if (cmdinfo->state & IS_IN_WORK_LIST) { list_del(&cmdinfo->work); cmdinfo->state &= ~IS_IN_WORK_LIST; @@ -776,11 +806,13 @@ static int uas_eh_bus_reset_handler(struct scsi_cmnd *cmnd) struct usb_device *udev = devinfo->udev; int err; + shost_printk(KERN_INFO, sdev->host, "%s start\n", __func__); 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); + uas_zap_dead(devinfo); uas_free_streams(devinfo); err = usb_reset_device(udev); if (!err) @@ -988,6 +1020,7 @@ static int uas_probe(struct usb_interface *intf, const struct usb_device_id *id) spin_lock_init(&devinfo->lock); INIT_WORK(&devinfo->work, uas_do_work); INIT_LIST_HEAD(&devinfo->work_list); + INIT_LIST_HEAD(&devinfo->dead_list); uas_configure_endpoints(devinfo); result = scsi_init_shared_tag_map(shost, devinfo->qdepth - 3); @@ -1036,6 +1069,7 @@ static void uas_disconnect(struct usb_interface *intf) usb_kill_anchored_urbs(&devinfo->cmd_urbs); usb_kill_anchored_urbs(&devinfo->sense_urbs); usb_kill_anchored_urbs(&devinfo->data_urbs); + uas_zap_dead(devinfo); scsi_remove_host(shost); uas_free_streams(devinfo); kfree(devinfo); |