scsi: core: Run queue when state is set to running after being blocked

[linux-2.6-block.git] / drivers / scsi / scsi_sysfs.c

diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 6a9040faed00c93ba5beeda77ffb5b2cbcb6c07e..3b119ca0cc0ce9ba2cfcc95cf78307a96b1d264b 100644 (file)
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -771,6 +771,12 @@ store_state_field(struct device *dev, struct device_attribute *attr,
 
        mutex_lock(&sdev->state_mutex);
        ret = scsi_device_set_state(sdev, state);
+       /*
+        * If the device state changes to SDEV_RUNNING, we need to run
+        * the queue to avoid I/O hang.
+        */
+       if (ret == 0 && state == SDEV_RUNNING)
+               blk_mq_run_hw_queues(sdev->request_queue, true);
        mutex_unlock(&sdev->state_mutex);
 
        return ret == 0 ? count : -EINVAL;