Revision e09e200e07222467ef82367bff7cc6f44ad00397 authored by Andy Shevchenko on 30 September 2020, 14:20:12 UTC, committed by Linus Walleij on 01 October 2020, 08:00:17 UTC
In IRQ handler we have to clear bitmap before use. Currently the GCC extension has been used for that. For sake of the consistency switch to bitmap API. As expected bloat-o-meter shows no difference in the object size. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Bartosz Golaszewski <bgolaszewski@baylibre.com> Link: https://lore.kernel.org/r/20200930142013.59247-1-andriy.shevchenko@linux.intel.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
1 parent 17479aa
nls_koi8-ru.c
/*
* linux/fs/nls/nls_koi8-ru.c
*
* Charset koi8-ru translation based on charset koi8-u.
* The Unicode to charset table has only exact mappings.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/nls.h>
#include <linux/errno.h>
static struct nls_table *p_nls;
static int uni2char(const wchar_t uni,
unsigned char *out, int boundlen)
{
if (boundlen <= 0)
return -ENAMETOOLONG;
if ((uni & 0xffaf) == 0x040e || (uni & 0xffce) == 0x254c) {
/* koi8-ru and koi8-u differ only on two characters */
if (uni == 0x040e)
out[0] = 0xbe;
else if (uni == 0x045e)
out[0] = 0xae;
else if (uni == 0x255d || uni == 0x256c)
return 0;
else
return p_nls->uni2char(uni, out, boundlen);
return 1;
}
else
/* fast path */
return p_nls->uni2char(uni, out, boundlen);
}
static int char2uni(const unsigned char *rawstring, int boundlen,
wchar_t *uni)
{
int n;
if ((*rawstring & 0xef) != 0xae) {
/* koi8-ru and koi8-u differ only on two characters */
*uni = (*rawstring & 0x10) ? 0x040e : 0x045e;
return 1;
}
n = p_nls->char2uni(rawstring, boundlen, uni);
return n;
}
static struct nls_table table = {
.charset = "koi8-ru",
.uni2char = uni2char,
.char2uni = char2uni,
};
static int __init init_nls_koi8_ru(void)
{
p_nls = load_nls("koi8-u");
if (p_nls) {
table.charset2upper = p_nls->charset2upper;
table.charset2lower = p_nls->charset2lower;
return register_nls(&table);
}
return -EINVAL;
}
static void __exit exit_nls_koi8_ru(void)
{
unregister_nls(&table);
unload_nls(p_nls);
}
module_init(init_nls_koi8_ru)
module_exit(exit_nls_koi8_ru)
MODULE_LICENSE("Dual BSD/GPL");
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