uart: update the sysfs handler to use uart_get_info (bebe73e3) · Commits · 戴 / test

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>

drivers/tty/serial/serial_core.c

+5 −5

Original line number	Diff line number	Diff line
		@@ -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);

Admin message