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Diffstat (limited to 'drivers/serial/8250.c')
-rw-r--r--drivers/serial/8250.c89
1 files changed, 7 insertions, 82 deletions
diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c
index 7e8fc7c1d4c..30a0a3d1014 100644
--- a/drivers/serial/8250.c
+++ b/drivers/serial/8250.c
@@ -1001,7 +1001,7 @@ static inline void __stop_tx(struct uart_8250_port *p)
}
}
-static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
+static void serial8250_stop_tx(struct uart_port *port)
{
struct uart_8250_port *up = (struct uart_8250_port *)port;
@@ -1018,7 +1018,7 @@ static void serial8250_stop_tx(struct uart_port *port, unsigned int tty_stop)
static void transmit_chars(struct uart_8250_port *up);
-static void serial8250_start_tx(struct uart_port *port, unsigned int tty_start)
+static void serial8250_start_tx(struct uart_port *port)
{
struct uart_8250_port *up = (struct uart_8250_port *)port;
@@ -1158,7 +1158,11 @@ static _INLINE_ void transmit_chars(struct uart_8250_port *up)
up->port.x_char = 0;
return;
}
- if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
+ if (uart_tx_stopped(&up->port)) {
+ serial8250_stop_tx(&up->port);
+ return;
+ }
+ if (uart_circ_empty(xmit)) {
__stop_tx(up);
return;
}
@@ -2586,82 +2590,3 @@ module_param_array(probe_rsa, ulong, &probe_rsa_count, 0444);
MODULE_PARM_DESC(probe_rsa, "Probe I/O ports for RSA");
#endif
MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
-
-/**
- * register_serial - configure a 16x50 serial port at runtime
- * @req: request structure
- *
- * Configure the serial port specified by the request. If the
- * port exists and is in use an error is returned. If the port
- * is not currently in the table it is added.
- *
- * The port is then probed and if necessary the IRQ is autodetected
- * If this fails an error is returned.
- *
- * On success the port is ready to use and the line number is returned.
- *
- * Note: this function is deprecated - use serial8250_register_port
- * instead.
- */
-int register_serial(struct serial_struct *req)
-{
- struct uart_port port;
-
- port.iobase = req->port;
- port.membase = req->iomem_base;
- port.irq = req->irq;
- port.uartclk = req->baud_base * 16;
- port.fifosize = req->xmit_fifo_size;
- port.regshift = req->iomem_reg_shift;
- port.iotype = req->io_type;
- port.flags = req->flags | UPF_BOOT_AUTOCONF;
- port.mapbase = req->iomap_base;
- port.dev = NULL;
-
- if (share_irqs)
- port.flags |= UPF_SHARE_IRQ;
-
- if (HIGH_BITS_OFFSET)
- port.iobase |= (long) req->port_high << HIGH_BITS_OFFSET;
-
- /*
- * If a clock rate wasn't specified by the low level driver, then
- * default to the standard clock rate. This should be 115200 (*16)
- * and should not depend on the architecture's BASE_BAUD definition.
- * However, since this API will be deprecated, it's probably a
- * better idea to convert the drivers to use the new API
- * (serial8250_register_port and serial8250_unregister_port).
- */
- if (port.uartclk == 0) {
- printk(KERN_WARNING
- "Serial: registering port at [%08x,%08lx,%p] irq %d with zero baud_base\n",
- port.iobase, port.mapbase, port.membase, port.irq);
- printk(KERN_WARNING "Serial: see %s:%d for more information\n",
- __FILE__, __LINE__);
- dump_stack();
-
- /*
- * Fix it up for now, but this is only a temporary measure.
- */
- port.uartclk = BASE_BAUD * 16;
- }
-
- return serial8250_register_port(&port);
-}
-EXPORT_SYMBOL(register_serial);
-
-/**
- * unregister_serial - remove a 16x50 serial port at runtime
- * @line: serial line number
- *
- * Remove one serial port. This may not be called from interrupt
- * context. We hand the port back to our local PM control.
- *
- * Note: this function is deprecated - use serial8250_unregister_port
- * instead.
- */
-void unregister_serial(int line)
-{
- serial8250_unregister_port(line);
-}
-EXPORT_SYMBOL(unregister_serial);