diff options
| -rw-r--r-- | drivers/scsi/isci/remote_device.c | 52 | ||||
| -rw-r--r-- | drivers/scsi/isci/remote_device.h | 3 |
2 files changed, 53 insertions, 2 deletions
diff --git a/drivers/scsi/isci/remote_device.c b/drivers/scsi/isci/remote_device.c index adeda64e512a..37e9bdead6f6 100644 --- a/drivers/scsi/isci/remote_device.c +++ b/drivers/scsi/isci/remote_device.c @@ -1289,6 +1289,48 @@ enum sci_status sci_remote_device_resume( return status; } +static void isci_remote_device_resume_from_abort_complete(void *cbparam) +{ + struct isci_remote_device *idev = cbparam; + struct isci_host *ihost = idev->owning_port->owning_controller; + scics_sds_remote_node_context_callback abort_resume_cb = + idev->abort_resume_cb; + + dev_dbg(scirdev_to_dev(idev), "%s: passing-along resume: %p\n", + __func__, abort_resume_cb); + + if (abort_resume_cb != NULL) { + idev->abort_resume_cb = NULL; + abort_resume_cb(idev->abort_resume_cbparam); + } + clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); + wake_up(&ihost->eventq); +} + + +void isci_remote_device_wait_for_resume_from_abort( + struct isci_host *ihost, + struct isci_remote_device *idev) +{ + dev_dbg(scirdev_to_dev(idev), "%s: starting resume wait: %p\n", + __func__, idev); + + #define MAX_RESUME_MSECS 5 + if (!wait_event_timeout(ihost->eventq, + (!test_bit(IDEV_ABORT_PATH_RESUME_PENDING, + &idev->flags) + || test_bit(IDEV_STOP_PENDING, &idev->flags)), + msecs_to_jiffies(MAX_RESUME_MSECS))) { + + dev_warn(scirdev_to_dev(idev), "%s: #### Timeout waiting for " + "resume: %p\n", __func__, idev); + } + clear_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); + + dev_dbg(scirdev_to_dev(idev), "%s: resume wait done: %p\n", + __func__, idev); +} + enum sci_status isci_remote_device_resume_from_abort( struct isci_host *ihost, struct isci_remote_device *idev) @@ -1300,12 +1342,18 @@ enum sci_status isci_remote_device_resume_from_abort( /* Preserve any current resume callbacks, for instance from other * resumptions. */ + idev->abort_resume_cb = idev->rnc.user_callback; + idev->abort_resume_cbparam = idev->rnc.user_cookie; + set_bit(IDEV_ABORT_PATH_RESUME_PENDING, &idev->flags); clear_bit(IDEV_ABORT_PATH_ACTIVE, &idev->flags); - status = sci_remote_device_resume(idev, idev->rnc.user_callback, - idev->rnc.user_cookie); + status = sci_remote_device_resume( + idev, isci_remote_device_resume_from_abort_complete, + idev); spin_unlock_irqrestore(&ihost->scic_lock, flags); + isci_remote_device_wait_for_resume_from_abort(ihost, idev); return status; } + /** * sci_remote_device_start() - This method will start the supplied remote * device. This method enables normal IO requests to flow through to the diff --git a/drivers/scsi/isci/remote_device.h b/drivers/scsi/isci/remote_device.h index 53564c35cf24..ff34c4e8c1b1 100644 --- a/drivers/scsi/isci/remote_device.h +++ b/drivers/scsi/isci/remote_device.h @@ -87,6 +87,7 @@ struct isci_remote_device { #define IDEV_IO_NCQERROR 5 #define IDEV_RNC_LLHANG_ENABLED 6 #define IDEV_ABORT_PATH_ACTIVE 7 + #define IDEV_ABORT_PATH_RESUME_PENDING 8 unsigned long flags; struct kref kref; struct isci_port *isci_port; @@ -101,6 +102,8 @@ struct isci_remote_device { u32 started_request_count; struct isci_request *working_request; u32 not_ready_reason; + scics_sds_remote_node_context_callback abort_resume_cb; + void *abort_resume_cbparam; }; #define ISCI_REMOTE_DEVICE_START_TIMEOUT 5000 |