Merge tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux

Pull virtio updates from Rusty Russell:
 "All trivial, thanks to the stuff which didn't quite make it time"

* tag 'virtio-next-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
  virtio_console: Initialize guest_connected=true for rproc_serial
  virtio: use module_virtio_driver.
  virtio: Add module driver macro for virtio drivers.
  virtio_console: Use virtio device index to generate port name
  virtio: make pci_device_id const
  virtio: make config_ops const
  virtio-mmio: fix wrong comment about register offset
  virtio_console: Let unconnected rproc device receive data.

10 files changed, 26 insertions, 59 deletions

diff --git a/drivers/char/hw_random/virtio-rng.c b/drivers/char/hw_random/virtio-rng.c
index b65c103..10fd71c 100644
--- a/drivers/char/hw_random/virtio-rng.c
+++ b/drivers/char/hw_random/virtio-rng.c
@@ -154,18 +154,7 @@ static struct virtio_driver virtio_rng_driver = {
 #endif
 };
 
-static int __init init(void)
-{
-	return register_virtio_driver(&virtio_rng_driver);
-}
-
-static void __exit fini(void)
-{
-	unregister_virtio_driver(&virtio_rng_driver);
-}
-module_init(init);
-module_exit(fini);
-
+module_virtio_driver(virtio_rng_driver);
 MODULE_DEVICE_TABLE(virtio, id_table);
 MODULE_DESCRIPTION("Virtio random number driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c
index ee4dbea..e905d5f5 100644
--- a/drivers/char/virtio_console.c
+++ b/drivers/char/virtio_console.c
@@ -61,9 +61,6 @@ struct ports_driver_data {
 	/* List of all the devices we're handling */
 	struct list_head portdevs;
 
-	/* Number of devices this driver is handling */
-	unsigned int index;
-
 	/*
 	 * This is used to keep track of the number of hvc consoles
 	 * spawned by this driver.  This number is given as the first
@@ -169,9 +166,6 @@ struct ports_device {
 	/* Array of per-port IO virtqueues */
 	struct virtqueue **in_vqs, **out_vqs;
 
-	/* Used for numbering devices for sysfs and debugfs */
-	unsigned int drv_index;
-
 	/* Major number for this device.  Ports will be created as minors. */
 	int chr_major;
 };
@@ -1415,7 +1409,7 @@ static int add_port(struct ports_device *portdev, u32 id)
 	}
 	port->dev = device_create(pdrvdata.class, &port->portdev->vdev->dev,
 				  devt, port, "vport%up%u",
-				  port->portdev->drv_index, id);
+				  port->portdev->vdev->index, id);
 	if (IS_ERR(port->dev)) {
 		err = PTR_ERR(port->dev);
 		dev_err(&port->portdev->vdev->dev,
@@ -1442,7 +1436,7 @@ static int add_port(struct ports_device *portdev, u32 id)
 		 * rproc_serial does not want the console port, only
 		 * the generic port implementation.
 		 */
-		port->host_connected = true;
+		port->host_connected = port->guest_connected = true;
 	else if (!use_multiport(port->portdev)) {
 		/*
 		 * If we're not using multiport support,
@@ -1470,7 +1464,7 @@ static int add_port(struct ports_device *portdev, u32 id)
 		 * inspect a port's state at any time
 		 */
 		sprintf(debugfs_name, "vport%up%u",
-			port->portdev->drv_index, id);
+			port->portdev->vdev->index, id);
 		port->debugfs_file = debugfs_create_file(debugfs_name, 0444,
 							 pdrvdata.debugfs_dir,
 							 port,
@@ -1958,16 +1952,12 @@ static int virtcons_probe(struct virtio_device *vdev)
 	portdev->vdev = vdev;
 	vdev->priv = portdev;
 
-	spin_lock_irq(&pdrvdata_lock);
-	portdev->drv_index = pdrvdata.index++;
-	spin_unlock_irq(&pdrvdata_lock);
-
 	portdev->chr_major = register_chrdev(0, "virtio-portsdev",
 					     &portdev_fops);
 	if (portdev->chr_major < 0) {
 		dev_err(&vdev->dev,
 			"Error %d registering chrdev for device %u\n",
-			portdev->chr_major, portdev->drv_index);
+			portdev->chr_major, vdev->index);
 		err = portdev->chr_major;
 		goto free;
 	}
diff --git a/drivers/lguest/lguest_device.c b/drivers/lguest/lguest_device.c
index fc92ccb..b3256ff 100644
--- a/drivers/lguest/lguest_device.c
+++ b/drivers/lguest/lguest_device.c
@@ -396,7 +396,7 @@ static const char *lg_bus_name(struct virtio_device *vdev)
 }
 
 /* The ops structure which hooks everything together. */
-static struct virtio_config_ops lguest_config_ops = {
+static const struct virtio_config_ops lguest_config_ops = {
 	.get_features = lg_get_features,
 	.finalize_features = lg_finalize_features,
 	.get = lg_get,
diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c
index 192c91c8..57ac4b0 100644
--- a/drivers/net/virtio_net.c
+++ b/drivers/net/virtio_net.c
@@ -1736,17 +1736,7 @@ static struct virtio_driver virtio_net_driver = {
 #endif
 };
 
-static int __init init(void)
-{
-	return register_virtio_driver(&virtio_net_driver);
-}
-
-static void __exit fini(void)
-{
-	unregister_virtio_driver(&virtio_net_driver);
-}
-module_init(init);
-module_exit(fini);
+module_virtio_driver(virtio_net_driver);
 
 MODULE_DEVICE_TABLE(virtio, id_table);
 MODULE_DESCRIPTION("Virtio network driver");
diff --git a/drivers/remoteproc/remoteproc_virtio.c b/drivers/remoteproc/remoteproc_virtio.c
index 9e198e5..afed9b7 100644
--- a/drivers/remoteproc/remoteproc_virtio.c
+++ b/drivers/remoteproc/remoteproc_virtio.c
@@ -222,7 +222,7 @@ static void rproc_virtio_finalize_features(struct virtio_device *vdev)
 	rvdev->gfeatures = vdev->features[0];
 }
 
-static struct virtio_config_ops rproc_virtio_config_ops = {
+static const struct virtio_config_ops rproc_virtio_config_ops = {
 	.get_features	= rproc_virtio_get_features,
 	.finalize_features = rproc_virtio_finalize_features,
 	.find_vqs	= rproc_virtio_find_vqs,
diff --git a/drivers/s390/kvm/kvm_virtio.c b/drivers/s390/kvm/kvm_virtio.c
index 03a15e0..6711e65 100644
--- a/drivers/s390/kvm/kvm_virtio.c
+++ b/drivers/s390/kvm/kvm_virtio.c
@@ -275,7 +275,7 @@ static const char *kvm_bus_name(struct virtio_device *vdev)
 /*
  * The config ops structure as defined by virtio config
  */
-static struct virtio_config_ops kvm_vq_configspace_ops = {
+static const struct virtio_config_ops kvm_vq_configspace_ops = {
 	.get_features = kvm_get_features,
 	.finalize_features = kvm_finalize_features,
 	.get = kvm_get,
diff --git a/drivers/virtio/virtio_balloon.c b/drivers/virtio/virtio_balloon.c
index 797e1c7..8dab163 100644
--- a/drivers/virtio/virtio_balloon.c
+++ b/drivers/virtio/virtio_balloon.c
@@ -560,18 +560,7 @@ static struct virtio_driver virtio_balloon_driver = {
 #endif
 };
 
-static int __init init(void)
-{
-	return register_virtio_driver(&virtio_balloon_driver);
-}
-
-static void __exit fini(void)
-{
-	unregister_virtio_driver(&virtio_balloon_driver);
-}
-module_init(init);
-module_exit(fini);
-
+module_virtio_driver(virtio_balloon_driver);
 MODULE_DEVICE_TABLE(virtio, id_table);
 MODULE_DESCRIPTION("Virtio balloon driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/virtio/virtio_mmio.c b/drivers/virtio/virtio_mmio.c
index 31f966f..1ba0d68 100644
--- a/drivers/virtio/virtio_mmio.c
+++ b/drivers/virtio/virtio_mmio.c
@@ -75,7 +75,7 @@
  *
  * 0x050  W  QueueNotify      Queue notifier
  * 0x060  R  InterruptStatus  Interrupt status register
- * 0x060  W  InterruptACK     Interrupt acknowledge register
+ * 0x064  W  InterruptACK     Interrupt acknowledge register
  * 0x070  RW Status           Device status register
  *
  * 0x100+ RW                  Device-specific configuration space
@@ -423,7 +423,7 @@ static const char *vm_bus_name(struct virtio_device *vdev)
 	return vm_dev->pdev->name;
 }
 
-static struct virtio_config_ops virtio_mmio_config_ops = {
+static const struct virtio_config_ops virtio_mmio_config_ops = {
 	.get		= vm_get,
 	.set		= vm_set,
 	.get_status	= vm_get_status,
diff --git a/drivers/virtio/virtio_pci.c b/drivers/virtio/virtio_pci.c
index 0c14289..a7ce730 100644
--- a/drivers/virtio/virtio_pci.c
+++ b/drivers/virtio/virtio_pci.c
@@ -91,9 +91,9 @@ struct virtio_pci_vq_info
 };
 
 /* Qumranet donated their vendor ID for devices 0x1000 thru 0x10FF. */
-static struct pci_device_id virtio_pci_id_table[] = {
-	{ 0x1af4, PCI_ANY_ID, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
-	{ 0 },
+static DEFINE_PCI_DEVICE_TABLE(virtio_pci_id_table) = {
+	{ PCI_DEVICE(0x1af4, PCI_ANY_ID) },
+	{ 0 }
 };
 
 MODULE_DEVICE_TABLE(pci, virtio_pci_id_table);
@@ -652,7 +652,7 @@ static int vp_set_vq_affinity(struct virtqueue *vq, int cpu)
 	return 0;
 }
 
-static struct virtio_config_ops virtio_pci_config_ops = {
+static const struct virtio_config_ops virtio_pci_config_ops = {
 	.get		= vp_get,
 	.set		= vp_set,
 	.get_status	= vp_get_status,
diff --git a/include/linux/virtio.h b/include/linux/virtio.h
index cf8adb1..ff6714e 100644
--- a/include/linux/virtio.h
+++ b/include/linux/virtio.h
@@ -78,7 +78,7 @@ struct virtio_device {
 	int index;
 	struct device dev;
 	struct virtio_device_id id;
-	struct virtio_config_ops *config;
+	const struct virtio_config_ops *config;
 	struct list_head vqs;
 	/* Note that this is a Linux set_bit-style bitmap. */
 	unsigned long features[1];
@@ -126,4 +126,13 @@ static inline struct virtio_driver *drv_to_virtio(struct device_driver *drv)
 
 int register_virtio_driver(struct virtio_driver *drv);
 void unregister_virtio_driver(struct virtio_driver *drv);
+
+/* module_virtio_driver() - Helper macro for drivers that don't do
+ * anything special in module init/exit.  This eliminates a lot of
+ * boilerplate.  Each module may only use this macro once, and
+ * calling it replaces module_init() and module_exit()
+ */
+#define module_virtio_driver(__virtio_driver) \
+	module_driver(__virtio_driver, register_virtio_driver, \
+			unregister_virtio_driver)
 #endif /* _LINUX_VIRTIO_H */