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crypto: fips - replace simple_strtol with kstrtoint to improve fips_enable 

Replace simple_strtol() with the recommended kstrtoint() for parsing the
'fips=' boot parameter. Unlike simple_strtol(), which returns a long,
kstrtoint() converts the string directly to an integer and avoids
implicit casting.

Check the return value of kstrtoint() and reject invalid values. This
adds error handling while preserving existing behavior for valid values,
and removes use of the deprecated simple_strtol() helper.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thorsten Blum 2025-09-16 00:12:45 +02:00 committed by Herbert Xu
parent 1a098379f2
commit 33eea63ff9
1 changed files with 4 additions and 1 deletions
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5
crypto/fips.c
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@ -24,7 +24,10 @@ EXPORT_SYMBOL_GPL(fips_fail_notif_chain);
/* Process kernel command-line parameter at boot time. fips=0 or fips=1 */
static int fips_enable(char *str)
{
fips_enabled = !!simple_strtol(str, NULL, 0);
if (kstrtoint(str, 0, &fips_enabled))
return 0;
fips_enabled = !!fips_enabled;
pr_info("fips mode: %s\n", str_enabled_disabled(fips_enabled));
return 1;
}