diff --git a/drivers/mmc/host/vub300.c b/drivers/mmc/host/vub300.c
index 2dae474dcd067..21f1b5d6ca862 100644
--- a/drivers/mmc/host/vub300.c
+++ b/drivers/mmc/host/vub300.c
@@ -344,6 +344,7 @@ struct vub300_mmc_host {
        struct timer_list sg_transfer_timer;
        struct usb_sg_request sg_request;
        struct timer_list inactivity_timer;
+       struct work_struct release_work;
        struct work_struct deadwork;
        struct work_struct cmndwork;
        struct delayed_work pollwork;
@@ -367,7 +368,7 @@ struct vub300_mmc_host {
 #define GET_SYSTEM_PORT_STATUS         0

 static void vub300_delete(struct kref *kref)
-{                              /* kref callback - softirq */
+{                              /* kref release callback */
        struct vub300_mmc_host *vub300 = kref_to_vub300_mmc_host(kref);
        struct mmc_host *mmc = vub300->mmc;

@@ -443,6 +444,14 @@ static void vub300_queue_dead_work(struct