Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Just minor overlapping changes in the conflicts here.

Signed-off-by: David S. Miller <davem@davemloft.net>

10 files changed, 59 insertions, 45 deletions

diff --git a/drivers/s390/block/dasd_alias.c b/drivers/s390/block/dasd_alias.c
index b9ce93e9df89..99f86612f775 100644
--- a/drivers/s390/block/dasd_alias.c
+++ b/drivers/s390/block/dasd_alias.c
@@ -383,6 +383,20 @@ suborder_not_supported(struct dasd_ccw_req *cqr)
 	char msg_format;
 	char msg_no;
 
+	/*
+	 * intrc values ENODEV, ENOLINK and EPERM
+	 * will be optained from sleep_on to indicate that no
+	 * IO operation can be started
+	 */
+	if (cqr->intrc == -ENODEV)
+		return 1;
+
+	if (cqr->intrc == -ENOLINK)
+		return 1;
+
+	if (cqr->intrc == -EPERM)
+		return 1;
+
 	sense = dasd_get_sense(&cqr->irb);
 	if (!sense)
 		return 0;
@@ -447,12 +461,8 @@ static int read_unit_address_configuration(struct dasd_device *device,
 	lcu->flags &= ~NEED_UAC_UPDATE;
 	spin_unlock_irqrestore(&lcu->lock, flags);
 
-	do {
-		rc = dasd_sleep_on(cqr);
-		if (rc && suborder_not_supported(cqr))
-			return -EOPNOTSUPP;
-	} while (rc && (cqr->retries > 0));
-	if (rc) {
+	rc = dasd_sleep_on(cqr);
+	if (rc && !suborder_not_supported(cqr)) {
 		spin_lock_irqsave(&lcu->lock, flags);
 		lcu->flags |= NEED_UAC_UPDATE;
 		spin_unlock_irqrestore(&lcu->lock, flags);
diff --git a/drivers/s390/char/con3215.c b/drivers/s390/char/con3215.c
index 8c9d412b6d33..e7cf0a1d4f71 100644
--- a/drivers/s390/char/con3215.c
+++ b/drivers/s390/char/con3215.c
@@ -398,6 +398,7 @@ static void raw3215_irq(struct ccw_device *cdev, unsigned long intparm,
 		}
 		if (dstat == 0x08)
 			break;
+		/* else, fall through */
 	case 0x04:
 		/* Device end interrupt. */
 		if ((raw = req->info) == NULL)
diff --git a/drivers/s390/char/tape_core.c b/drivers/s390/char/tape_core.c
index 8d3370da2dfc..3e0b2f63a9d2 100644
--- a/drivers/s390/char/tape_core.c
+++ b/drivers/s390/char/tape_core.c
@@ -677,6 +677,7 @@ tape_generic_remove(struct ccw_device *cdev)
 	switch (device->tape_state) {
 		case TS_INIT:
 			tape_state_set(device, TS_NOT_OPER);
+			/* fallthrough */
 		case TS_NOT_OPER:
 			/*
 			 * Nothing to do.
@@ -949,6 +950,7 @@ __tape_start_request(struct tape_device *device, struct tape_request *request)
 				break;
 			if (device->tape_state == TS_UNUSED)
 				break;
+			/* fallthrough */
 		default:
 			if (device->tape_state == TS_BLKUSE)
 				break;
@@ -1116,6 +1118,7 @@ __tape_do_irq (struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
 			case -ETIMEDOUT:
 				DBF_LH(1, "(%08x): Request timed out\n",
 				       device->cdev_id);
+				/* fallthrough */
 			case -EIO:
 				__tape_end_request(device, request, -EIO);
 				break;
diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c
index 730c4e68094b..4142c85e77d8 100644
--- a/drivers/s390/cio/qdio_main.c
+++ b/drivers/s390/cio/qdio_main.c
@@ -319,9 +319,7 @@ static int qdio_siga_output(struct qdio_q *q, unsigned int *busy_bit,
 	int retries = 0, cc;
 	unsigned long laob = 0;
 
-	WARN_ON_ONCE(aob && ((queue_type(q) != QDIO_IQDIO_QFMT) ||
-			     !q->u.out.use_cq));
-	if (q->u.out.use_cq && aob != 0) {
+	if (aob) {
 		fc = QDIO_SIGA_WRITEQ;
 		laob = aob;
 	}
@@ -621,9 +619,6 @@ static inline unsigned long qdio_aob_for_buffer(struct qdio_output_q *q,
 {
 	unsigned long phys_aob = 0;
 
-	if (!q->use_cq)
-		return 0;
-
 	if (!q->aobs[bufnr]) {
 		struct qaob *aob = qdio_allocate_aob();
 		q->aobs[bufnr] = aob;
@@ -1308,6 +1303,8 @@ static void qdio_detect_hsicq(struct qdio_irq *irq_ptr)
 
 	for_each_output_queue(irq_ptr, q, i) {
 		if (use_cq) {
+			if (multicast_outbound(q))
+				continue;
 			if (qdio_enable_async_operation(&q->u.out) < 0) {
 				use_cq = 0;
 				continue;
@@ -1553,18 +1550,19 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags,
 		/* One SIGA-W per buffer required for unicast HSI */
 		WARN_ON_ONCE(count > 1 && !multicast_outbound(q));
 
-		phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr);
+		if (q->u.out.use_cq)
+			phys_aob = qdio_aob_for_buffer(&q->u.out, bufnr);
 
 		rc = qdio_kick_outbound_q(q, phys_aob);
 	} else if (need_siga_sync(q)) {
 		rc = qdio_siga_sync_q(q);
+	} else if (count < QDIO_MAX_BUFFERS_PER_Q &&
+		   get_buf_state(q, prev_buf(bufnr), &state, 0) > 0 &&
+		   state == SLSB_CU_OUTPUT_PRIMED) {
+		/* The previous buffer is not processed yet, tack on. */
+		qperf_inc(q, fast_requeue);
 	} else {
-		/* try to fast requeue buffers */
-		get_buf_state(q, prev_buf(bufnr), &state, 0);
-		if (state != SLSB_CU_OUTPUT_PRIMED)
-			rc = qdio_kick_outbound_q(q, 0);
-		else
-			qperf_inc(q, fast_requeue);
+		rc = qdio_kick_outbound_q(q, 0);
 	}
 
 	/* in case of SIGA errors we must process the error immediately */
diff --git a/drivers/s390/cio/vfio_ccw_async.c b/drivers/s390/cio/vfio_ccw_async.c
index 8c1d2357ef5b..7a838e3d7c0f 100644
--- a/drivers/s390/cio/vfio_ccw_async.c
+++ b/drivers/s390/cio/vfio_ccw_async.c
@@ -70,7 +70,7 @@ static void vfio_ccw_async_region_release(struct vfio_ccw_private *private,
 
 }
 
-const struct vfio_ccw_regops vfio_ccw_async_region_ops = {
+static const struct vfio_ccw_regops vfio_ccw_async_region_ops = {
 	.read = vfio_ccw_async_region_read,
 	.write = vfio_ccw_async_region_write,
 	.release = vfio_ccw_async_region_release,
diff --git a/drivers/s390/cio/vfio_ccw_cp.c b/drivers/s390/cio/vfio_ccw_cp.c
index 1d4c893ead23..3645d1720c4b 100644
--- a/drivers/s390/cio/vfio_ccw_cp.c
+++ b/drivers/s390/cio/vfio_ccw_cp.c
@@ -72,8 +72,10 @@ static int pfn_array_alloc(struct pfn_array *pa, u64 iova, unsigned int len)
 				  sizeof(*pa->pa_iova_pfn) +
 				  sizeof(*pa->pa_pfn),
 				  GFP_KERNEL);
-	if (unlikely(!pa->pa_iova_pfn))
+	if (unlikely(!pa->pa_iova_pfn)) {
+		pa->pa_nr = 0;
 		return -ENOMEM;
+	}
 	pa->pa_pfn = pa->pa_iova_pfn + pa->pa_nr;
 
 	pa->pa_iova_pfn[0] = pa->pa_iova >> PAGE_SHIFT;
@@ -421,7 +423,7 @@ static int ccwchain_loop_tic(struct ccwchain *chain,
 static int ccwchain_handle_ccw(u32 cda, struct channel_program *cp)
 {
 	struct ccwchain *chain;
-	int len;
+	int len, ret;
 
 	/* Copy 2K (the most we support today) of possible CCWs */
 	len = copy_from_iova(cp->mdev, cp->guest_cp, cda,
@@ -448,7 +450,12 @@ static int ccwchain_handle_ccw(u32 cda, struct channel_program *cp)
 	memcpy(chain->ch_ccw, cp->guest_cp, len * sizeof(struct ccw1));
 
 	/* Loop for tics on this new chain. */
-	return ccwchain_loop_tic(chain, cp);
+	ret = ccwchain_loop_tic(chain, cp);
+
+	if (ret)
+		ccwchain_free(chain);
+
+	return ret;
 }
 
 /* Loop for TICs. */
@@ -642,17 +649,16 @@ int cp_init(struct channel_program *cp, struct device *mdev, union orb *orb)
 
 	/* Build a ccwchain for the first CCW segment */
 	ret = ccwchain_handle_ccw(orb->cmd.cpa, cp);
-	if (ret)
-		cp_free(cp);
-
-	/* It is safe to force: if not set but idals used
-	 * ccwchain_calc_length returns an error.
-	 */
-	cp->orb.cmd.c64 = 1;
 
-	if (!ret)
+	if (!ret) {
 		cp->initialized = true;
 
+		/* It is safe to force: if it was not set but idals used
+		 * ccwchain_calc_length would have returned an error.
+		 */
+		cp->orb.cmd.c64 = 1;
+	}
+
 	return ret;
 }
 
diff --git a/drivers/s390/cio/vfio_ccw_drv.c b/drivers/s390/cio/vfio_ccw_drv.c
index 2b90a5ecaeb9..9208c0e56c33 100644
--- a/drivers/s390/cio/vfio_ccw_drv.c
+++ b/drivers/s390/cio/vfio_ccw_drv.c
@@ -88,7 +88,7 @@ static void vfio_ccw_sch_io_todo(struct work_struct *work)
 		     (SCSW_ACTL_DEVACT | SCSW_ACTL_SCHACT));
 	if (scsw_is_solicited(&irb->scsw)) {
 		cp_update_scsw(&private->cp, &irb->scsw);
-		if (is_final)
+		if (is_final && private->state == VFIO_CCW_STATE_CP_PENDING)
 			cp_free(&private->cp);
 	}
 	mutex_lock(&private->io_mutex);
diff --git a/drivers/s390/crypto/ap_queue.c b/drivers/s390/crypto/ap_queue.c
index 5ea83dc4f1d7..dad2be333d82 100644
--- a/drivers/s390/crypto/ap_queue.c
+++ b/drivers/s390/crypto/ap_queue.c
@@ -152,6 +152,7 @@ static struct ap_queue_status ap_sm_recv(struct ap_queue *aq)
 			ap_msg->receive(aq, ap_msg, aq->reply);
 			break;
 		}
+		/* fall through */
 	case AP_RESPONSE_NO_PENDING_REPLY:
 		if (!status.queue_empty || aq->queue_count <= 0)
 			break;
diff --git a/drivers/s390/crypto/zcrypt_msgtype6.c b/drivers/s390/crypto/zcrypt_msgtype6.c
index 12fe9deb265e..a36251d138fb 100644
--- a/drivers/s390/crypto/zcrypt_msgtype6.c
+++ b/drivers/s390/crypto/zcrypt_msgtype6.c
@@ -801,10 +801,7 @@ static int convert_response_ica(struct zcrypt_queue *zq,
 		if (msg->cprbx.cprb_ver_id == 0x02)
 			return convert_type86_ica(zq, reply,
 						  outputdata, outputdatalength);
-		/*
-		 * Fall through, no break, incorrect cprb version is an unknown
-		 * response
-		 */
+		/* fall through - wrong cprb version is an unknown response */
 	default: /* Unknown response type, this should NEVER EVER happen */
 		zq->online = 0;
 		pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
@@ -837,10 +834,7 @@ static int convert_response_xcrb(struct zcrypt_queue *zq,
 		}
 		if (msg->cprbx.cprb_ver_id == 0x02)
 			return convert_type86_xcrb(zq, reply, xcRB);
-		/*
-		 * Fall through, no break, incorrect cprb version is an unknown
-		 * response
-		 */
+		/* fall through - wrong cprb version is an unknown response */
 	default: /* Unknown response type, this should NEVER EVER happen */
 		xcRB->status = 0x0008044DL; /* HDD_InvalidParm */
 		zq->online = 0;
@@ -870,7 +864,7 @@ static int convert_response_ep11_xcrb(struct zcrypt_queue *zq,
 			return convert_error(zq, reply);
 		if (msg->cprbx.cprb_ver_id == 0x04)
 			return convert_type86_ep11_xcrb(zq, reply, xcRB);
-	/* Fall through, no break, incorrect cprb version is an unknown resp.*/
+		/* fall through - wrong cprb version is an unknown resp */
 	default: /* Unknown response type, this should NEVER EVER happen */
 		zq->online = 0;
 		pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
@@ -900,10 +894,7 @@ static int convert_response_rng(struct zcrypt_queue *zq,
 			return -EINVAL;
 		if (msg->cprbx.cprb_ver_id == 0x02)
 			return convert_type86_rng(zq, reply, data);
-		/*
-		 * Fall through, no break, incorrect cprb version is an unknown
-		 * response
-		 */
+		/* fall through - wrong cprb version is an unknown response */
 	default: /* Unknown response type, this should NEVER EVER happen */
 		zq->online = 0;
 		pr_err("Cryptographic device %02x.%04x failed and was set offline\n",
diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
index 1a55e5942d36..957889a42d2e 100644
--- a/drivers/s390/virtio/virtio_ccw.c
+++ b/drivers/s390/virtio/virtio_ccw.c
@@ -145,6 +145,8 @@ struct airq_info {
 	struct airq_iv *aiv;
 };
 static struct airq_info *airq_areas[MAX_AIRQ_AREAS];
+static DEFINE_MUTEX(airq_areas_lock);
+
 static u8 *summary_indicators;
 
 static inline u8 *get_summary_indicator(struct airq_info *info)
@@ -265,9 +267,11 @@ static unsigned long get_airq_indicator(struct virtqueue *vqs[], int nvqs,
 	unsigned long bit, flags;
 
 	for (i = 0; i < MAX_AIRQ_AREAS && !indicator_addr; i++) {
+		mutex_lock(&airq_areas_lock);
 		if (!airq_areas[i])
 			airq_areas[i] = new_airq_info(i);
 		info = airq_areas[i];
+		mutex_unlock(&airq_areas_lock);
 		if (!info)
 			return 0;
 		write_lock_irqsave(&info->lock, flags);