kstrtox: consistently use _tolower()

We already use _tolower() in other places, so convert the one which open
codes it.

Link: https://lkml.kernel.org/r/20230817145919.543251-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/lib/kstrtox.c b/lib/kstrtox.c
index 08c1401..d586e6a 100644 (file)
--- a/lib/kstrtox.c
+++ b/lib/kstrtox.c
@@ -59,7 +59,7 @@ unsigned int _parse_integer_limit(const char *s, unsigned int base, unsigned lon
        rv = 0;
        while (max_chars--) {
                unsigned int c = *s;
-               unsigned int lc = c | 0x20; /* don't tolower() this line */
+               unsigned int lc = _tolower(c);
                unsigned int val;
 
                if ('0' <= c && c <= '9')