From: Alan Cox <alan@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
---
drivers/tty/serial/serial_core.c | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 0fcfd98..477e079 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -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);
--
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