Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Pull sparc update from David Miller:
 "Not a lot of stuff this time around, mostly bug fixing:

   - Fix alignment of 32-bit crosscall datastructure on Leon, from
     Andreas Larsson.

   - Several fixes to the virtual disk driver on sparc64 by Dwight
     Engen, including handling resets of the service domain properly"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sunvdc: reconnect ldc after vds service domain restarts
  sparc/ldc: create separate ldc_unbind from ldc_free
  vio: create routines for inc,dec vio dring indexes
  sunvdc: fix module unload/reload
  sparc32, leon: Align ccall_info to prevent unaligned traps on crosscall

arch/sparc/include/asm/ldc.h

@@ -61,6 +61,7 @@ void ldc_free(struct ldc_channel *lp);
 
 /* Register TX and RX queues of the link with the hypervisor.  */
 int ldc_bind(struct ldc_channel *lp);
+void ldc_unbind(struct ldc_channel *lp);
 
 /* For non-RAW protocols we need to complete a handshake before
  * communication can proceed.  ldc_connect() does that, if the

arch/sparc/include/asm/vio.h

@@ -300,6 +300,21 @@ static inline u32 vio_dring_avail(struct vio_dring_state *dr,
 		((dr->prod - dr->cons) & (ring_size - 1)) - 1);
 }
 
+static inline u32 vio_dring_next(struct vio_dring_state *dr, u32 index)
+{
+	if (++index == dr->num_entries)
+		index = 0;
+	return index;
+}
+
+static inline u32 vio_dring_prev(struct vio_dring_state *dr, u32 index)
+{
+	if (index == 0)
+		return dr->num_entries - 1;
+	else
+		return index - 1;
+}
+
 #define VIO_MAX_TYPE_LEN	32
 #define VIO_MAX_COMPAT_LEN	64
 

arch/sparc/kernel/ldc.c

@@ -1222,11 +1222,12 @@ struct ldc_channel *ldc_alloc(unsigned long id,
 }
 EXPORT_SYMBOL(ldc_alloc);
 
-void ldc_free(struct ldc_channel *lp)
+void ldc_unbind(struct ldc_channel *lp)
 {
 	if (lp->flags & LDC_FLAG_REGISTERED_IRQS) {
 		free_irq(lp->cfg.rx_irq, lp);
 		free_irq(lp->cfg.tx_irq, lp);
+		lp->flags &= ~LDC_FLAG_REGISTERED_IRQS;
 	}
 
 	if (lp->flags & LDC_FLAG_REGISTERED_QUEUES) {
@@ -1240,10 +1241,15 @@ void ldc_free(struct ldc_channel *lp)
 		lp->flags &= ~LDC_FLAG_ALLOCED_QUEUES;
 	}
 
-	hlist_del(&lp->list);
+	ldc_set_state(lp, LDC_STATE_INIT);
+}
+EXPORT_SYMBOL(ldc_unbind);
 
+void ldc_free(struct ldc_channel *lp)
+{
+	ldc_unbind(lp);
+	hlist_del(&lp->list);
 	kfree(lp->mssbuf);
-
 	ldc_iommu_release(lp);
 
 	kfree(lp);

arch/sparc/kernel/leon_smp.c

@@ -368,7 +368,7 @@ static struct smp_funcall {
 	unsigned long arg5;
 	unsigned long processors_in[NR_CPUS];	/* Set when ipi entered. */
 	unsigned long processors_out[NR_CPUS];	/* Set when ipi exited. */
-} ccall_info;
+} ccall_info __attribute__((aligned(8)));
 
 static DEFINE_SPINLOCK(cross_call_lock);
 

drivers/net/ethernet/sun/sunvnet.c

@@ -466,23 +466,6 @@ static int vnet_send_ack(struct vnet_port *port, struct vio_dring_state *dr,
 	return err;
 }
 
-static u32 next_idx(u32 idx, struct vio_dring_state *dr)
-{
-	if (++idx == dr->num_entries)
-		idx = 0;
-	return idx;
-}
-
-static u32 prev_idx(u32 idx, struct vio_dring_state *dr)
-{
-	if (idx == 0)
-		idx = dr->num_entries - 1;
-	else
-		idx--;
-
-	return idx;
-}
-
 static struct vio_net_desc *get_rx_desc(struct vnet_port *port,
 					struct vio_dring_state *dr,
 					u32 index)
@@ -556,7 +539,8 @@ static int vnet_walk_rx(struct vnet_port *port, struct vio_dring_state *dr,
 	int ack_start = -1, ack_end = -1;
 	bool send_ack = true;
 
-	end = (end == (u32) -1) ? prev_idx(start, dr) : next_idx(end, dr);
+	end = (end == (u32) -1) ? vio_dring_prev(dr, start)
+				: vio_dring_next(dr, end);
 
 	viodbg(DATA, "vnet_walk_rx start[%08x] end[%08x]\n", start, end);
 
@@ -570,7 +554,7 @@ static int vnet_walk_rx(struct vnet_port *port, struct vio_dring_state *dr,
 		if (ack_start == -1)
 			ack_start = start;
 		ack_end = start;
-		start = next_idx(start, dr);
+		start = vio_dring_next(dr, start);
 		if (ack && start != end) {
 			err = vnet_send_ack(port, dr, ack_start, ack_end,
 					    VIO_DRING_ACTIVE);
@@ -584,7 +568,7 @@ static int vnet_walk_rx(struct vnet_port *port, struct vio_dring_state *dr,
 		}
 	}
 	if (unlikely(ack_start == -1))
-		ack_start = ack_end = prev_idx(start, dr);
+		ack_start = ack_end = vio_dring_prev(dr, start);
 	if (send_ack) {
 		port->napi_resume = false;
 		return vnet_send_ack(port, dr, ack_start, ack_end,
@@ -633,7 +617,7 @@ static int idx_is_pending(struct vio_dring_state *dr, u32 end)
 			found = 1;
 			break;
 		}
-		idx = next_idx(idx, dr);
+		idx = vio_dring_next(dr, idx);
 	}
 	return found;
 }
@@ -663,7 +647,7 @@ static int vnet_ack(struct vnet_port *port, void *msgbuf)
 	/* sync for race conditions with vnet_start_xmit() and tell xmit it
 	 * is time to send a trigger.
 	 */
-	dr->cons = next_idx(end, dr);
+	dr->cons = vio_dring_next(dr, end);
 	desc = vio_dring_entry(dr, dr->cons);
 	if (desc->hdr.state == VIO_DESC_READY && !port->start_cons) {
 		/* vnet_start_xmit() just populated this dring but missed
@@ -784,7 +768,7 @@ static int vnet_event_napi(struct vnet_port *port, int budget)
 			pkt->tag.stype = VIO_SUBTYPE_INFO;
 			pkt->tag.stype_env = VIO_DRING_DATA;
 			pkt->seq = dr->rcv_nxt;
-			pkt->start_idx = next_idx(port->napi_stop_idx, dr);
+			pkt->start_idx = vio_dring_next(dr, port->napi_stop_idx);
 			pkt->end_idx = -1;
 			goto napi_resume;
 		}