vfio: ccw: Merge BUSY and BOXED states

VFIO_CCW_STATE_BOXED and VFIO_CCW_STATE_BUSY have
identical actions for the same events.

Let's merge both into a single state to simplify the code.
We choose to keep VFIO_CCW_STATE_BUSY.

Signed-off-by: Pierre Morel <pmorel@linux.ibm.com>
Message-Id: <1539767923-10539-2-git-send-email-pmorel@linux.ibm.com>
Reviewed-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>

diff --git a/drivers/s390/cio/vfio_ccw_fsm.c b/drivers/s390/cio/vfio_ccw_fsm.c
index f94aa01f9c36adb748693a09766cb0ea33dec450..cab17865aafe1adba34b5388af859b1ccbad2457 100644 (file)
--- a/drivers/s390/cio/vfio_ccw_fsm.c
+++ b/drivers/s390/cio/vfio_ccw_fsm.c
@@ -130,7 +130,7 @@ static void fsm_io_request(struct vfio_ccw_private *private,
        struct mdev_device *mdev = private->mdev;
        char *errstr = "request";
 
-       private->state = VFIO_CCW_STATE_BOXED;
+       private->state = VFIO_CCW_STATE_BUSY;
 
        memcpy(scsw, io_region->scsw_area, sizeof(*scsw));
 
@@ -216,11 +216,6 @@ fsm_func_t *vfio_ccw_jumptable[NR_VFIO_CCW_STATES][NR_VFIO_CCW_EVENTS] = {
                [VFIO_CCW_EVENT_IO_REQ]         = fsm_io_request,
                [VFIO_CCW_EVENT_INTERRUPT]      = fsm_irq,
        },
-       [VFIO_CCW_STATE_BOXED] = {
-               [VFIO_CCW_EVENT_NOT_OPER]       = fsm_notoper,
-               [VFIO_CCW_EVENT_IO_REQ]         = fsm_io_busy,
-               [VFIO_CCW_EVENT_INTERRUPT]      = fsm_irq,
-       },
        [VFIO_CCW_STATE_BUSY] = {
                [VFIO_CCW_EVENT_NOT_OPER]       = fsm_notoper,
                [VFIO_CCW_EVENT_IO_REQ]         = fsm_io_busy,

diff --git a/drivers/s390/cio/vfio_ccw_private.h b/drivers/s390/cio/vfio_ccw_private.h
index 078e46f9623d5f4a128ea37e3840867583ff47f8..08e9a7dc9176b8b0899e393fb757f4b0b3c9d117 100644 (file)
--- a/drivers/s390/cio/vfio_ccw_private.h
+++ b/drivers/s390/cio/vfio_ccw_private.h
@@ -63,7 +63,6 @@ enum vfio_ccw_state {
        VFIO_CCW_STATE_NOT_OPER,
        VFIO_CCW_STATE_STANDBY,
        VFIO_CCW_STATE_IDLE,
-       VFIO_CCW_STATE_BOXED,
        VFIO_CCW_STATE_BUSY,
        /* last element! */
        NR_VFIO_CCW_STATES