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uart: update the sysfs handler to use uart_get_info 

The two patches needed are now in the tree. The first added the sysfs
interface and directly accesses the uartclk. The second provides a
proper interface for getting the values.

Wire them together.

This formes a basis for both get and set methods for any of the other uart
properties and we can now fill them out further.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
hifive-unleashed-5.1
Alan Cox 2012-10-29 15:19:57 +00:00 committed by Greg Kroah-Hartman
parent 15a12e83da
commit bebe73e31d
1 changed files with 5 additions and 5 deletions
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10
drivers/tty/serial/serial_core.c
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@ -2329,15 +2329,15 @@ struct tty_driver *uart_console_device(struct console *co, int *index)
static ssize_t uart_get_attr_uartclk(struct device *dev,
struct device_attribute *attr, char *buf)
{
int ret;
struct serial_struct tmp;
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);
mutex_lock(&port->mutex);
uart_get_info(port, state, &tmp);
mutex_unlock(&port->mutex);
return ret;
return snprintf(buf, PAGE_SIZE, "%d\n", tmp.baud_base * 16);
}
static DEVICE_ATTR(uartclk, S_IRUSR | S_IRGRP, uart_get_attr_uartclk, NULL);