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   1 From 72ff51d8dd262d1fef25baedc2ac35116435be47 Mon Sep 17 00:00:00 2001
   2 From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz>
   3 Date: Wed, 6 Mar 2019 17:54:03 +0100
   4 Subject: [PATCH] serial: ar933x_uart: Fix build failure with disabled console
   5 MIME-Version: 1.0
   6 Content-Type: text/plain; charset=UTF-8
   7 Content-Transfer-Encoding: 8bit
   8
   9 Andrey has reported on OpenWrt's bug tracking system[1], that he
  10 currently can't use ar93xx_uart as pure serial UART without console
  11 (CONFIG_SERIAL_8250_CONSOLE and CONFIG_SERIAL_AR933X_CONSOLE undefined),
  12 because compilation ends with following error:
  13
  14  ar933x_uart.c: In function 'ar933x_uart_console_write':
  15  ar933x_uart.c:550:14: error: 'struct uart_port' has no
  16                                member named 'sysrq'
  17
  18 So this patch moves all the code related to console handling behind
  19 series of CONFIG_SERIAL_AR933X_CONSOLE ifdefs.
  20
  21 1. https://bugs.openwrt.org/index.php?do=details&task_id=2152
  22
  23 Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  24 Cc: Jiri Slaby <jslaby@suse.com>
  25 Cc: Andrey Batyiev <batyiev@gmail.com>
  26 Reported-by: Andrey Batyiev <batyiev@gmail.com>
  27 Tested-by: Andrey Batyiev <batyiev@gmail.com>
  28 Signed-off-by: Petr Štetiar <ynezz@true.cz>
  29 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  30 ---
  31  drivers/tty/serial/ar933x_uart.c | 24 ++++++++----------------
  32  1 file changed, 8 insertions(+), 16 deletions(-)
  33
  34 --- a/drivers/tty/serial/ar933x_uart.c
  35 +++ b/drivers/tty/serial/ar933x_uart.c
  36 @@ -52,11 +52,6 @@ struct ar933x_uart_port {
  37         struct clk              *clk;
  38  };
  39
  40 -static inline bool ar933x_uart_console_enabled(void)
  41 -{
  42 -       return IS_ENABLED(CONFIG_SERIAL_AR933X_CONSOLE);
  43 -}
  44 -
  45  static inline unsigned int ar933x_uart_read(struct ar933x_uart_port *up,
  46                                             int offset)
  47  {
  48 @@ -511,6 +506,7 @@ static const struct uart_ops ar933x_uart
  49         .verify_port    = ar933x_uart_verify_port,
  50  };
  51
  52 +#ifdef CONFIG_SERIAL_AR933X_CONSOLE
  53  static struct ar933x_uart_port *
  54  ar933x_console_ports[CONFIG_SERIAL_AR933X_NR_UARTS];
  55
  56 @@ -607,14 +603,7 @@ static struct console ar933x_uart_consol
  57         .index          = -1,
  58         .data           = &ar933x_uart_driver,
  59  };
  60 -
  61 -static void ar933x_uart_add_console_port(struct ar933x_uart_port *up)
  62 -{
  63 -       if (!ar933x_uart_console_enabled())
  64 -               return;
  65 -
  66 -       ar933x_console_ports[up->port.line] = up;
  67 -}
  68 +#endif /* CONFIG_SERIAL_AR933X_CONSOLE */
  69
  70  static struct uart_driver ar933x_uart_driver = {
  71         .owner          = THIS_MODULE,
  72 @@ -703,7 +692,9 @@ static int ar933x_uart_probe(struct plat
  73         baud = ar933x_uart_get_baud(port->uartclk, 0, AR933X_UART_MAX_STEP);
  74         up->max_baud = min_t(unsigned int, baud, AR933X_UART_MAX_BAUD);
  75
  76 -       ar933x_uart_add_console_port(up);
  77 +#ifdef CONFIG_SERIAL_AR933X_CONSOLE
  78 +       ar933x_console_ports[up->port.line] = up;
  79 +#endif
  80
  81         ret = uart_add_one_port(&ar933x_uart_driver, &up->port);
  82         if (ret)
  83 @@ -752,8 +743,9 @@ static int __init ar933x_uart_init(void)
  84  {
  85         int ret;
  86
  87 -       if (ar933x_uart_console_enabled())
  88 -               ar933x_uart_driver.cons = &ar933x_uart_console;
  89 +#ifdef CONFIG_SERIAL_AR933X_CONSOLE
  90 +       ar933x_uart_driver.cons = &ar933x_uart_console;
  91 +#endif
  92
  93         ret = uart_register_driver(&ar933x_uart_driver);
  94         if (ret)