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04c7f60ca4
We want to fix the serial core port DEVNAME to use a port id of the
hardware specific controller port instance instead of the port->line.
For example, the 8250 driver sets up a number of serial8250 ports
initially that can be inherited by the hardware specific driver. At that
the port->line no longer decribes the port's relation to the serial core
controller instance.
Let's fix the issue by assigning port->port_id for each serial core
controller port instance.
Fixes: 7d695d8376 ("serial: core: Fix serial_base_match() after fixing controller port name")
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20230811103648.2826-1-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
47 lines
1.6 KiB
C
47 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Serial core related functions, serial port device drivers do not need this.
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*
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* Copyright (C) 2023 Texas Instruments Incorporated - https://www.ti.com/
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* Author: Tony Lindgren <tony@atomide.com>
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*/
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#define to_serial_base_ctrl_device(d) container_of((d), struct serial_ctrl_device, dev)
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#define to_serial_base_port_device(d) container_of((d), struct serial_port_device, dev)
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struct uart_driver;
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struct uart_port;
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struct device_driver;
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struct device;
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struct serial_ctrl_device {
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struct device dev;
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struct ida port_ida;
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};
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struct serial_port_device {
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struct device dev;
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struct uart_port *port;
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};
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int serial_base_ctrl_init(void);
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void serial_base_ctrl_exit(void);
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int serial_base_port_init(void);
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void serial_base_port_exit(void);
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int serial_base_driver_register(struct device_driver *driver);
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void serial_base_driver_unregister(struct device_driver *driver);
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struct serial_ctrl_device *serial_base_ctrl_add(struct uart_port *port,
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struct device *parent);
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struct serial_port_device *serial_base_port_add(struct uart_port *port,
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struct serial_ctrl_device *parent);
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void serial_base_ctrl_device_remove(struct serial_ctrl_device *ctrl_dev);
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void serial_base_port_device_remove(struct serial_port_device *port_dev);
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int serial_ctrl_register_port(struct uart_driver *drv, struct uart_port *port);
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void serial_ctrl_unregister_port(struct uart_driver *drv, struct uart_port *port);
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int serial_core_register_port(struct uart_driver *drv, struct uart_port *port);
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void serial_core_unregister_port(struct uart_driver *drv, struct uart_port *port);
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