From: Alan Cox Date: Mon, 29 Oct 2012 15:19:57 +0000 (+0000) Subject: uart: update the sysfs handler to use uart_get_info X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=bebe73e31d98845c8b63e624c25a5da2d819345a;p=openwrt%2Fstaging%2Fblogic.git 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 Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 0fcfd98a9566..477e0790ddf2 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);