summaryrefslogtreecommitdiffstats
path: root/drivers/s390/cio/qdio_main.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
-rw-r--r--drivers/s390/cio/qdio_main.c19
1 files changed, 10 insertions, 9 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 5640c89cd9de..c532ba929ccd 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -1508,7 +1508,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags,
if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE)
return -EBUSY;
-
+ if (!count)
+ return 0;
if (callflags & QDIO_FLAG_SYNC_INPUT)
return handle_inbound(irq_ptr->input_qs[q_nr],
callflags, bufnr, count);
@@ -1648,26 +1649,26 @@ static int __init init_QDIO(void)
{
int rc;
- rc = qdio_setup_init();
+ rc = qdio_debug_init();
if (rc)
return rc;
+ rc = qdio_setup_init();
+ if (rc)
+ goto out_debug;
rc = tiqdio_allocate_memory();
if (rc)
goto out_cache;
- rc = qdio_debug_init();
- if (rc)
- goto out_ti;
rc = tiqdio_register_thinints();
if (rc)
- goto out_debug;
+ goto out_ti;
return 0;
-out_debug:
- qdio_debug_exit();
out_ti:
tiqdio_free_memory();
out_cache:
qdio_setup_exit();
+out_debug:
+ qdio_debug_exit();
return rc;
}
@@ -1675,8 +1676,8 @@ static void __exit exit_QDIO(void)
{
tiqdio_unregister_thinints();
tiqdio_free_memory();
- qdio_debug_exit();
qdio_setup_exit();
+ qdio_debug_exit();
}
module_init(init_QDIO);