mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-21 17:20:56 +07:00
2cfe6c4ac7
Some of my configs I test with have CONFIG_A11Y_BRAILLE_CONSOLE set.
When I started testing against v3.11-rc4 my console went bonkers. Using
ktest to bisect the issue, it came down to:
commit bbeddf52a "printk: move braille console support into separate
braille.[ch] files"
Looking into the patch I found the problem. It's with the return of
braille_register_console(). As anything other than NULL is considered a
failure.
But for those of us that have CONFIG_A11Y_BRAILLE_CONSOLE set but do not
define a "brl" or "brl=" on the command line, we still may want a
console that those with sight can still use.
Return NULL (success) if "brl" or "brl=" is not on the console line.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Joe Perches <joe@perches.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
50 lines
945 B
C
50 lines
945 B
C
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/kernel.h>
|
|
#include <linux/console.h>
|
|
#include <linux/string.h>
|
|
|
|
#include "console_cmdline.h"
|
|
#include "braille.h"
|
|
|
|
char *_braille_console_setup(char **str, char **brl_options)
|
|
{
|
|
if (!memcmp(*str, "brl,", 4)) {
|
|
*brl_options = "";
|
|
*str += 4;
|
|
} else if (!memcmp(str, "brl=", 4)) {
|
|
*brl_options = *str + 4;
|
|
*str = strchr(*brl_options, ',');
|
|
if (!*str)
|
|
pr_err("need port name after brl=\n");
|
|
else
|
|
*((*str)++) = 0;
|
|
} else
|
|
return NULL;
|
|
|
|
return *str;
|
|
}
|
|
|
|
int
|
|
_braille_register_console(struct console *console, struct console_cmdline *c)
|
|
{
|
|
int rtn = 0;
|
|
|
|
if (c->brl_options) {
|
|
console->flags |= CON_BRL;
|
|
rtn = braille_register_console(console, c->index, c->options,
|
|
c->brl_options);
|
|
}
|
|
|
|
return rtn;
|
|
}
|
|
|
|
int
|
|
_braille_unregister_console(struct console *console)
|
|
{
|
|
if (console->flags & CON_BRL)
|
|
return braille_unregister_console(console);
|
|
|
|
return 0;
|
|
}
|