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The following changes since commit 8c0f9f5b309d627182d5da72a69246f58bde1026: Revert "uapi/linux/keyctl.h: don't use C++ reserved keyword as a struct member name" (2018-09-25 13:28:58 +0200) are available in the Git repository at: git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git tags/virtio-ccw-20180926 for you to fetch changes up to

...(as you did), but with a per-device mutex. That looks like the easiest solution. > --- > drivers/s390/virtio/virtio_ccw.c | 7 ++++++- > 1 file changed, 6 insertions(+), 1 deletion(-) > > diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > index a5e8530a3391..36252f344660 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -289,6 +289,8 @@ static int doing_io(struct virtio_ccw_device *vcdev, __u32 flag) > return ret; > } > > +DEFINE_MUTEX(vcio_mtx); > + > static int ccw_io_helpe...

...> Signed-off-by: Halil Pasic <pasic at linux.ibm.com> > --- > drivers/s390/virtio/virtio_ccw.c | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > index 8f5c1d7f751a..a5e8530a3391 100644 > --- a/drivers/s390/virtio/virtio_ccw.c > +++ b/drivers/s390/virtio/virtio_ccw.c > @@ -828,6 +828,7 @@ static void virtio_ccw_get_config(struct virtio_device *vdev, > int ret; > struct ccw1 *ccw; > void *config_area; > + unsigned long flags; > > ccw = kz...

...ibm.com> > >> --- > >> drivers/s390/virtio/virtio_ccw.c | 10 ++++++++-- > >> 1 file changed, 8 insertions(+), 2 deletions(-) > >> > >> diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c > >> index 8f5c1d7f751a..a5e8530a3391 100644 > >> --- a/drivers/s390/virtio/virtio_ccw.c > >> +++ b/drivers/s390/virtio/virtio_ccw.c > >> @@ -828,6 +828,7 @@ static void virtio_ccw_get_config(struct virtio_device *vdev, > >> int ret; > >> struct ccw1 *ccw; > >> void *config_ar...