serial: 8250_platform: Unify comment style

Unify comment style and fix indentation in some cases.
While at it, add that it supports ACPI enumerated non-PNP devices.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240812154901.1068407-8-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Author: andy-shev

drivers/tty/serial/8250/8250_platform.c

@@ -2,7 +2,9 @@
 /*
  *  Universal/legacy platform driver for 8250/16550-type serial ports
  *
- *  Supports: ISA-compatible 8250/16550 ports
+ *  Supports:
+ *	      ISA-compatible 8250/16550 ports
+ *	      ACPI 8250/16550 ports
  *	      PNP 8250/16550 ports
  *	      "serial8250" platform devices
  */
@@ -24,9 +26,9 @@
 
 /*
  * Configuration:
- *    share_irqs   Whether we pass IRQF_SHARED to request_irq().
+ * share_irqs:     Whether we pass IRQF_SHARED to request_irq().
  *                 This option is unsafe when used on edge-triggered interrupts.
- * skip_txen_test  Force skip of txen test at init time.
+ * skip_txen_test: Force skip of txen test at init time.
  */
 unsigned int share_irqs = SERIAL8250_SHARE_IRQS;
 unsigned int skip_txen_test;
@@ -63,9 +65,9 @@ static void __init __serial8250_isa_init_ports(void)
 		nr_uarts = UART_NR;
 
 	/*
-	 * Set up initial isa ports based on nr_uart module param, or else
+	 * Set up initial ISA ports based on nr_uart module param, or else
 	 * default to CONFIG_SERIAL_8250_RUNTIME_UARTS. Note that we do not
-	 * need to increase nr_uarts when setting up the initial isa ports.
+	 * need to increase nr_uarts when setting up the initial ISA ports.
 	 */
 	for (i = 0; i < nr_uarts; i++)
 		serial8250_setup_port(i);
@@ -132,11 +134,12 @@ static int serial8250_probe_acpi(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	/* Default clock frequency*/
+	/* default clock frequency */
 	uart.port.uartclk = 1843200;
 	uart.port.type = PORT_16550A;
 	uart.port.dev = &pdev->dev;
 	uart.port.flags |= UPF_SKIP_TEST | UPF_BOOT_AUTOCONF;
+
 	ret = uart_read_and_validate_port_properties(&uart.port);
 	/* no interrupt -> fall back to polling */
 	if (ret == -ENXIO)
@@ -207,8 +210,8 @@ static int serial8250_probe_platform(struct platform_device *dev, struct plat_se
 }
 
 /*
- * Register a set of serial devices attached to a platform device.  The
- * list is terminated with a zero flags entry, which means we expect
+ * Register a set of serial devices attached to a platform device.
+ * The list is terminated with a zero flags entry, which means we expect
  * all entries to have at least UPF_BOOT_AUTOCONF set.
  */
 static int serial8250_probe(struct platform_device *pdev)
@@ -293,7 +296,7 @@ static struct platform_driver serial8250_isa_driver = {
 
 /*
  * This "device" covers _all_ ISA 8250-compatible serial devices listed
- * in the table in include/asm/serial.h
+ * in the table in include/asm/serial.h.
  */
 struct platform_device *serial8250_isa_devs;
 
@@ -322,8 +325,7 @@ static int __init serial8250_init(void)
 	if (ret)
 		goto unreg_uart_drv;
 
-	serial8250_isa_devs = platform_device_alloc("serial8250",
-						    PLAT8250_DEV_LEGACY);
+	serial8250_isa_devs = platform_device_alloc("serial8250", PLAT8250_DEV_LEGACY);
 	if (!serial8250_isa_devs) {
 		ret = -ENOMEM;
 		goto unreg_pnp;
@@ -362,7 +364,7 @@ static void __exit serial8250_exit(void)
 	/*
 	 * This tells serial8250_unregister_port() not to re-register
 	 * the ports (thereby making serial8250_isa_driver permanently
-	 * in use.)
+	 * in use).
 	 */
 	serial8250_isa_devs = NULL;
 
@@ -395,12 +397,13 @@ MODULE_ALIAS_CHARDEV_MAJOR(TTY_MAJOR);
 
 #ifdef CONFIG_SERIAL_8250_DEPRECATED_OPTIONS
 #ifndef MODULE
-/* This module was renamed to 8250_core in 3.7.  Keep the old "8250" name
- * working as well for the module options so we don't break people.  We
+/*
+ * This module was renamed to 8250_core in 3.7. Keep the old "8250" name
+ * working as well for the module options so we don't break people. We
  * need to keep the names identical and the convenient macros will happily
  * refuse to let us do that by failing the build with redefinition errors
- * of global variables.  So we stick them inside a dummy function to avoid
- * those conflicts.  The options still get parsed, and the redefined
+ * of global variables. So we stick them inside a dummy function to avoid
+ * those conflicts. The options still get parsed, and the redefined
  * MODULE_PARAM_PREFIX lets us keep the "8250." syntax alive.
  *
  * This is hacky.  I'm sorry.