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tty_register_device_attr updated for tty-next

Browse Source 
Added tty_device_create_release() and bound to dev->release in
tty_register_device_attr().
Added tty_port_register_device_attr() and used in uart_add_one_port()
instead of tty_register_device_attr().

Signed-off-by: Tomas Hlavacek <tmshlvck@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Hlavacek 2012-09-06 23:17:47 +02:00 committed by Greg Kroah-Hartman
parent 6915c0e487
commit b1b799164a
4 changed files with 39 additions and 4 deletions
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8
drivers/tty/serial/serial_core.c
View File

@ -2313,9 +2313,9 @@ static ssize_t uart_get_attr_uartclk(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
struct tty_port *port = dev_get_drvdata(dev);
struct uart_state *state = container_of(port, struct uart_state, port);
mutex_lock(&state->port.mutex);
ret = snprintf(buf, PAGE_SIZE, "%d\n", state->uart_port->uartclk);
mutex_unlock(&state->port.mutex);
@ -2330,7 +2330,7 @@ static struct attribute *tty_dev_attrs[] = {
NULL,
};
static struct attribute_group tty_dev_attr_group = {
static const struct attribute_group tty_dev_attr_group = {
.attrs = tty_dev_attrs,
};
@ -2392,8 +2392,8 @@ int uart_add_one_port(struct uart_driver *drv, struct uart_port *uport)
* Register the port whether it's detected or not. This allows
* setserial to be used to alter this ports parameters.
*/
tty_dev = tty_register_device_attr(drv->tty_driver, uport->line,
uport->dev, port, tty_dev_attr_groups);
tty_dev = tty_port_register_device_attr(port, drv->tty_driver,
uport->line, uport->dev, port, tty_dev_attr_groups);
if (likely(!IS_ERR(tty_dev))) {
device_set_wakeup_capable(tty_dev, 1);
} else {

7
drivers/tty/tty_io.c
View File

@ -3045,6 +3045,12 @@ struct device *tty_register_device(struct tty_driver *driver, unsigned index,
}
EXPORT_SYMBOL(tty_register_device);
static void tty_device_create_release(struct device *dev)
{
pr_debug("device: '%s': %s\n", dev_name(dev), __func__);
kfree(dev);
}
/**
* tty_register_device_attr - register a tty device
* @driver: the tty driver that describes the tty device
@ -3103,6 +3109,7 @@ struct device *tty_register_device_attr(struct tty_driver *driver,
dev->devt = devt;
dev->class = tty_class;
dev->parent = device;
dev->release = tty_device_create_release;
dev_set_name(dev, "%s", name);
dev->groups = attr_grp;
dev_set_drvdata(dev, drvdata);

24
drivers/tty/tty_port.c
View File

@ -73,6 +73,30 @@ struct device *tty_port_register_device(struct tty_port *port,
}
EXPORT_SYMBOL_GPL(tty_port_register_device);
/**
* tty_port_register_device_attr - register tty device
* @port: tty_port of the device
* @driver: tty_driver for this device
* @index: index of the tty
* @device: parent if exists, otherwise NULL
* @drvdata: Driver data to be set to device.
* @attr_grp: Attribute group to be set on device.
*
* It is the same as tty_register_device_attr except the provided @port is
* linked to a concrete tty specified by @index. Use this or tty_port_install
* (or both). Call tty_port_link_device as a last resort.
*/
struct device *tty_port_register_device_attr(struct tty_port *port,
struct tty_driver *driver, unsigned index,
struct device *device, void *drvdata,
const struct attribute_group **attr_grp)
{
tty_port_link_device(port, driver, index);
return tty_register_device_attr(driver, index, device, drvdata,
attr_grp);
}
EXPORT_SYMBOL_GPL(tty_port_register_device_attr);
int tty_port_alloc_xmit_buf(struct tty_port *port)
{
/* We may sleep in get_zeroed_page() */

4
include/linux/tty.h
View File

@ -507,6 +507,10 @@ extern void tty_port_link_device(struct tty_port *port,
extern struct device *tty_port_register_device(struct tty_port *port,
struct tty_driver *driver, unsigned index,
struct device *device);
extern struct device *tty_port_register_device_attr(struct tty_port *port,
struct tty_driver *driver, unsigned index,
struct device *device, void *drvdata,
const struct attribute_group **attr_grp);
extern int tty_port_alloc_xmit_buf(struct tty_port *port);
extern void tty_port_free_xmit_buf(struct tty_port *port);
extern void tty_port_put(struct tty_port *port);