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4fc29e63cc
For unifying console ->setup() handling, which is poorly documented, return error code, rather than non-zero arbitrary number. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Petr Mladek <pmladek@suse.com> Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20200618164751.56828-2-andriy.shevchenko@linux.intel.com
55 lines
1.0 KiB
C
55 lines
1.0 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Wrap-around code for a console using the
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* ARC io-routines.
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*
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* Copyright (c) 1998 Harald Koerfgen
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* Copyright (c) 2001 Ralf Baechle
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* Copyright (c) 2002 Thiemo Seufer
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*/
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#include <linux/tty.h>
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#include <linux/major.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/fs.h>
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#include <asm/setup.h>
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#include <asm/sgialib.h>
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static void prom_console_write(struct console *co, const char *s,
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unsigned count)
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{
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/* Do each character */
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while (count--) {
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if (*s == '\n')
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prom_putchar('\r');
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prom_putchar(*s++);
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}
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}
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static int prom_console_setup(struct console *co, char *options)
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{
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if (prom_flags & PROM_FLAG_USE_AS_CONSOLE)
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return 0;
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return -ENODEV;
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}
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static struct console arc_cons = {
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.name = "arc",
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.write = prom_console_write,
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.setup = prom_console_setup,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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};
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/*
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* Register console.
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*/
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static int __init arc_console_init(void)
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{
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register_console(&arc_cons);
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return 0;
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}
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console_initcall(arc_console_init);
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