On Thu, 21 Feb 2019 15:14:54 +0100
Pierre Morel <pmorel@xxxxxxxxxxxxx> wrote:
> Libudev relies on having a subsystem link for non-root devices. To
> avoid libudev (and potentially other userspace tools) choking on the
> matrix device let us introduce a matrix bus and with it the matrix
> bus subsytem. Also make the matrix device reside within the matrix
> bus.
>
> Doing this we remove the forced link from the matrix device to the
> vfio_ap driver and the device_type we do not need anymore.
>
> Since the associated matrix driver is not the vfio_ap driver any more,
> we have to change the search for the devices on the vfio_ap driver in
> the function vfio_ap_verify_queue_reserved.
>
> Fixes: 1fde573413b5 ("s390: vfio-ap: base implementation of VFIO AP device driver")
>
> Cc: stable@xxxxxxxxxxxxxxx
>
I'd kill the two empty lines.
> Reported-by: Marc Hartmayer <mhartmay@xxxxxxxxxxxxx>
> Reported-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Signed-off-by: Pierre Morel <pmorel@xxxxxxxxxxxxx>
> Tested-by: Christian Borntraeger <borntraeger@xxxxxxxxxx>
> Reviewed-by: Cornelia Huck <cohuck@xxxxxxxxxx>
> Acked-by: Halil Pasic <pasic@xxxxxxxxxxxxx>
> ---
> drivers/s390/crypto/vfio_ap_drv.c | 44 ++++++++++++++++++++++++++++-------
> drivers/s390/crypto/vfio_ap_ops.c | 4 ++--
> drivers/s390/crypto/vfio_ap_private.h | 1 +
> 3 files changed, 38 insertions(+), 11 deletions(-)
Otherwise, still looks good.
