Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 163 insertions, 0 deletions

diff --git a/drivers/dio/dio-driver.c b/drivers/dio/dio-driver.c
new file mode 100644
index 000000000000..ffe6f44ac76f
--- /dev/null
+++ b/drivers/dio/dio-driver.c
@@ -0,0 +1,163 @@
+/*
+ *  DIO Driver Services
+ *
+ *  Copyright (C) 2004 Jochen Friedrich
+ *
+ *  Loosely based on drivers/pci/pci-driver.c and drivers/zorro/zorro-driver.c
+ *
+ *  This file is subject to the terms and conditions of the GNU General Public
+ *  License.  See the file COPYING in the main directory of this archive
+ *  for more details.
+ */
+
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/dio.h>
+
+
+	/**
+	 *  dio_match_device - Tell if a DIO device structure has a matching
+	 *                     DIO device id structure
+	 *  @ids: array of DIO device id structures to search in
+	 *  @dev: the DIO device structure to match against
+	 *
+	 *  Used by a driver to check whether a DIO device present in the
+	 *  system is in its list of supported devices. Returns the matching
+	 *  dio_device_id structure or %NULL if there is no match.
+	 */
+
+const struct dio_device_id *
+dio_match_device(const struct dio_device_id *ids,
+		   const struct dio_dev *d)
+{
+	while (ids->id) {
+		if (ids->id == DIO_WILDCARD)
+			return ids;
+		if (DIO_NEEDSSECID(ids->id & 0xff)) {
+			if (ids->id == d->id)
+				return ids;
+		} else {
+			if ((ids->id & 0xff) == (d->id & 0xff))
+				return ids;
+		}
+		ids++;
+	}
+	return NULL;
+}
+
+static int dio_device_probe(struct device *dev)
+{
+	int error = 0;
+	struct dio_driver *drv = to_dio_driver(dev->driver);
+	struct dio_dev *d = to_dio_dev(dev);
+
+	if (!d->driver && drv->probe) {
+		const struct dio_device_id *id;
+
+		id = dio_match_device(drv->id_table, d);
+		if (id)
+			error = drv->probe(d, id);
+		if (error >= 0) {
+			d->driver = drv;
+			error = 0;
+		}
+	}
+	return error;
+}
+
+
+	/**
+	 *  dio_register_driver - register a new DIO driver
+	 *  @drv: the driver structure to register
+	 *
+	 *  Adds the driver structure to the list of registered drivers
+	 *  Returns the number of DIO devices which were claimed by the driver
+	 *  during registration.  The driver remains registered even if the
+	 *  return value is zero.
+	 */
+
+int dio_register_driver(struct dio_driver *drv)
+{
+	int count = 0;
+
+	/* initialize common driver fields */
+	drv->driver.name = drv->name;
+	drv->driver.bus = &dio_bus_type;
+	drv->driver.probe = dio_device_probe;
+
+	/* register with core */
+	count = driver_register(&drv->driver);
+	return count ? count : 1;
+}
+
+
+	/**
+	 *  dio_unregister_driver - unregister a DIO driver
+	 *  @drv: the driver structure to unregister
+	 *
+	 *  Deletes the driver structure from the list of registered DIO drivers,
+	 *  gives it a chance to clean up by calling its remove() function for
+	 *  each device it was responsible for, and marks those devices as
+	 *  driverless.
+	 */
+
+void dio_unregister_driver(struct dio_driver *drv)
+{
+	driver_unregister(&drv->driver);
+}
+
+
+	/**
+	 *  dio_bus_match - Tell if a DIO device structure has a matching DIO
+	 *                  device id structure
+	 *  @ids: array of DIO device id structures to search in
+	 *  @dev: the DIO device structure to match against
+	 *
+	 *  Used by a driver to check whether a DIO device present in the
+	 *  system is in its list of supported devices. Returns the matching
+	 *  dio_device_id structure or %NULL if there is no match.
+	 */
+
+static int dio_bus_match(struct device *dev, struct device_driver *drv)
+{
+	struct dio_dev *d = to_dio_dev(dev);
+	struct dio_driver *dio_drv = to_dio_driver(drv);
+	const struct dio_device_id *ids = dio_drv->id_table;
+
+	if (!ids)
+		return 0;
+
+	while (ids->id) {
+		if (ids->id == DIO_WILDCARD)
+			return 1;
+		if (DIO_NEEDSSECID(ids->id & 0xff)) {
+			if (ids->id == d->id)
+				return 1;
+		} else {
+			if ((ids->id & 0xff) == (d->id & 0xff))
+				return 1;
+		}
+		ids++;
+	}
+	return 0;
+}
+
+
+struct bus_type dio_bus_type = {
+	.name	= "dio",
+	.match	= dio_bus_match
+};
+
+
+static int __init dio_driver_init(void)
+{
+	return bus_register(&dio_bus_type);
+}
+
+postcore_initcall(dio_driver_init);
+
+EXPORT_SYMBOL(dio_match_device);
+EXPORT_SYMBOL(dio_register_driver);
+EXPORT_SYMBOL(dio_unregister_driver);
+EXPORT_SYMBOL(dio_dev_driver);
+EXPORT_SYMBOL(dio_bus_type);