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lib/hexdump.c: return -EINVAL in case of error in hex2bin()

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In some cases caller would like to use error code directly without
shadowing.

-EINVAL feels a rightful code to return in case of error in hex2bin().

Link: http://lkml.kernel.org/r/20170731135510.68023-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Shevchenko 2017-09-08 16:15:28 -07:00 committed by Linus Torvalds
parent f0f1a45f95
commit 9888a588ea
1 changed files with 3 additions and 2 deletions
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5
lib/hexdump.c
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@ -9,6 +9,7 @@
#include <linux/types.h>
#include <linux/ctype.h>
#include <linux/errno.h>
#include <linux/kernel.h>
#include <linux/export.h>
#include <asm/unaligned.h>
@ -42,7 +43,7 @@ EXPORT_SYMBOL(hex_to_bin);
* @src: ascii hexadecimal string
* @count: result length
*
* Return 0 on success, -1 in case of bad input.
* Return 0 on success, -EINVAL in case of bad input.
*/
int hex2bin(u8 *dst, const char *src, size_t count)
{
@ -51,7 +52,7 @@ int hex2bin(u8 *dst, const char *src, size_t count)
int lo = hex_to_bin(*src++);
if ((hi < 0) || (lo < 0))
return -1;
return -EINVAL;
*dst++ = (hi << 4) | lo;
}