Commit 7cb7636a authored by Tony Krowiak's avatar Tony Krowiak Committed by Heiko Carstens
Browse files

s390/vfio_ap: increase max wait time for reset verification 



Increase the maximum time to wait for verification of a queue reset
operation to 200ms.

Signed-off-by: default avatarTony Krowiak <akrowiak@linux.ibm.com>
Reviewed-by: default avatarJason J. Herne <jjherne@linux.ibm.com>
Reviewed-by: default avatarHarald Freudenberger <freude@linux.ibm.com>
Link: https://lore.kernel.org/r/20230118203111.529766-7-akrowiak@linux.ibm.com


Signed-off-by: default avatarChristian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent 51d4d987

drivers/s390/crypto/vfio_ap_ops.c

+7 −3
Original line number Diff line number Diff line
@@ -30,6 +30,9 @@ 
#define AP_QUEUE_UNASSIGNED "unassigned"

#define AP_QUEUE_IN_USE "in use"



#define MAX_RESET_CHECK_WAIT	200	/* Sleep max 200ms for reset check	*/

#define AP_RESET_INTERVAL		20	/* Reset sleep interval (20ms)		*/



static int vfio_ap_mdev_reset_queues(struct ap_queue_table *qtable);

static struct vfio_ap_queue *vfio_ap_find_queue(int apqn);

static const struct vfio_device_ops vfio_ap_matrix_dev_ops;
@@ -1626,11 +1629,12 @@ static int apq_status_check(int apqn, struct ap_queue_status *status) 


static int apq_reset_check(struct vfio_ap_queue *q)

{

	int iters = 2, ret;

	int ret;

	int iters = MAX_RESET_CHECK_WAIT / AP_RESET_INTERVAL;

	struct ap_queue_status status;



	while (iters--) {

		msleep(20);

	for (; iters > 0; iters--) {

		msleep(AP_RESET_INTERVAL);

		status = ap_tapq(q->apqn, NULL);

		ret = apq_status_check(q->apqn, &status);

		if (ret != -EBUSY)