diff options
| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2009-03-26 14:24:24 (GMT) |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2009-03-26 14:24:19 (GMT) |
| commit | b454740246d14b0a9c00220696f9020eaa15ca12 (patch) | |
| tree | 8d0deb7de94992548aae364ef39f34c4c67cf096 /drivers/s390/cio/qdio_main.c | |
| parent | feed9b62da6e2997612143ae4b857ec7f33c810d (diff) | |
| download | linux-fsl-qoriq-b454740246d14b0a9c00220696f9020eaa15ca12.tar.xz | |
[S390] qdio: add missing tiq_list locking
Add a mutex to protect the tiq_list. Although reading the list is done
using RCU adding and removing elements from the list must still
happen locked since multiple qdio devices may change the list in parallel
otherwise.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/qdio_main.c')
| -rw-r--r-- | drivers/s390/cio/qdio_main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 10cb0f8..5100996 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -1112,6 +1112,7 @@ int qdio_shutdown(struct ccw_device *cdev, int how) if (!irq_ptr) return -ENODEV; + BUG_ON(irqs_disabled()); DBF_EVENT("qshutdown:%4x", cdev->private->schid.sch_no); mutex_lock(&irq_ptr->setup_mutex); |