https://github.com/torvalds/linux
Revision aa563af763373a7e67a7b8fdb427d2a2fcbeab3b authored by Takashi Iwai on 31 July 2009, 08:05:11 UTC, committed by Takashi Iwai on 31 July 2009, 08:06:34 UTC
The name buf with size 16 is too short for some codec names, e.g. truncated like "ALC861-VD Analo". Now the size is doubled. Signed-off-by: Takashi Iwai <tiwai@suse.de>
1 parent 78735cf
Tip revision: aa563af763373a7e67a7b8fdb427d2a2fcbeab3b authored by Takashi Iwai on 31 July 2009, 08:05:11 UTC
ALSA: hda - Increase PCM stream name buf in patch_realtek.c
ALSA: hda - Increase PCM stream name buf in patch_realtek.c
Tip revision: aa563af
string_helpers.c
/*
* Helpers for formatting and printing strings
*
* Copyright 31 August 2008 James Bottomley
*/
#include <linux/kernel.h>
#include <linux/math64.h>
#include <linux/module.h>
#include <linux/string_helpers.h>
/**
* string_get_size - get the size in the specified units
* @size: The size to be converted
* @units: units to use (powers of 1000 or 1024)
* @buf: buffer to format to
* @len: length of buffer
*
* This function returns a string formatted to 3 significant figures
* giving the size in the required units. Returns 0 on success or
* error on failure. @buf is always zero terminated.
*
*/
int string_get_size(u64 size, const enum string_size_units units,
char *buf, int len)
{
const char *units_10[] = { "B", "kB", "MB", "GB", "TB", "PB",
"EB", "ZB", "YB", NULL};
const char *units_2[] = {"B", "KiB", "MiB", "GiB", "TiB", "PiB",
"EiB", "ZiB", "YiB", NULL };
const char **units_str[] = {
[STRING_UNITS_10] = units_10,
[STRING_UNITS_2] = units_2,
};
const unsigned int divisor[] = {
[STRING_UNITS_10] = 1000,
[STRING_UNITS_2] = 1024,
};
int i, j;
u64 remainder = 0, sf_cap;
char tmp[8];
tmp[0] = '\0';
i = 0;
if (size >= divisor[units]) {
while (size >= divisor[units] && units_str[units][i]) {
remainder = do_div(size, divisor[units]);
i++;
}
sf_cap = size;
for (j = 0; sf_cap*10 < 1000; j++)
sf_cap *= 10;
if (j) {
remainder *= 1000;
do_div(remainder, divisor[units]);
snprintf(tmp, sizeof(tmp), ".%03lld",
(unsigned long long)remainder);
tmp[j+1] = '\0';
}
}
snprintf(buf, len, "%lld%s %s", (unsigned long long)size,
tmp, units_str[units][i]);
return 0;
}
EXPORT_SYMBOL(string_get_size);
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