Re: [RFC 06/19] s390/zcrypt: register matrix device with VFIO mediated device framework

Tony Krowiak
2017-10-16T16:09:07Z

On 10/16/2017 05:03 AM, Martin Schwidefsky wrote:
> On Fri, 13 Oct 2017 13:38:51 -0400
> Tony Krowiak <akrowiak@linux.vnet.ibm.com> wrote:
>
>> diff --git a/drivers/s390/crypto/ap_matrix_bus.c b/drivers/s390/crypto/ap_matrix_bus.c
>> index 66bfa54..418c23b 100644
>> --- a/drivers/s390/crypto/ap_matrix_bus.c
>> +++ b/drivers/s390/crypto/ap_matrix_bus.c
>> @@ -61,6 +61,7 @@ static int ap_matrix_dev_create(void)
>> matrix->device.bus = &ap_matrix_bus_type;
>> matrix->device.parent = ap_matrix_root_device;
>> matrix->device.release = ap_matrix_dev_release;
>> + INIT_LIST_HEAD(&matrix->queues);
>>
>> ret = device_register(&matrix->device);
>> if (ret) {
>> diff --git a/drivers/s390/crypto/ap_matrix_bus.h b/drivers/s390/crypto/ap_matrix_bus.h
>> index c2aff23..3eccc36 100644
>> --- a/drivers/s390/crypto/ap_matrix_bus.h
>> +++ b/drivers/s390/crypto/ap_matrix_bus.h
>> @@ -12,8 +12,12 @@
>>
>> #include <linux/device.h>
>>
>> +#include "ap_bus.h"
>> +
>> struct ap_matrix {
>> struct device device;
>> + spinlock_t qlock;
>> + struct list_head queues;
>> };
>>
>> struct ap_matrix *ap_matrix_get_device(void);
> Move these two hunks into patch #5 please. Yes, strictly speaking the two elements
> in the struct ap_matrix are needed only with patch #6, but it is fine to introduce
> an element with a new driver that is only exploited with a later patch.
Will do.
>