vt: ucs.c: fix misappropriate in_range() usage

The in_range() helper accepts a start and a length, not a start and
an end.

Signed-off-by: Nicolas Pitre <npitre@baylibre.com>
Reviewed-by: Jiri Slaby <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20250507141535.40655-2-nico@fluxnic.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/vt/ucs.c b/drivers/tty/vt/ucs.c
index 0b58cb7344a3c46e9e947261d2d254117466303b..b0b23830170d1908d68399f233b2eb8d8cabcd11 100644 (file)
--- a/drivers/tty/vt/ucs.c
+++ b/drivers/tty/vt/ucs.c
@@ -46,7 +46,7 @@ static int interval32_cmp(const void *key, const void *element)
 
 static bool cp_in_range16(u16 cp, const struct ucs_interval16 *ranges, size_t size)
 {
-       if (!in_range(cp, ranges[0].first, ranges[size - 1].last))
+       if (cp < ranges[0].first || cp > ranges[size - 1].last)
                return false;
 
        return __inline_bsearch(&cp, ranges, size, sizeof(*ranges),
@@ -55,7 +55,7 @@ static bool cp_in_range16(u16 cp, const struct ucs_interval16 *ranges, size_t si
 
 static bool cp_in_range32(u32 cp, const struct ucs_interval32 *ranges, size_t size)
 {
-       if (!in_range(cp, ranges[0].first, ranges[size - 1].last))
+       if (cp < ranges[0].first || cp > ranges[size - 1].last)
                return false;
 
        return __inline_bsearch(&cp, ranges, size, sizeof(*ranges),
@@ -144,8 +144,8 @@ static int recomposition_cmp(const void *key, const void *element)
 u32 ucs_recompose(u32 base, u32 mark)
 {
        /* Check if characters are within the range of our table */
-       if (!in_range(base, UCS_RECOMPOSE_MIN_BASE, UCS_RECOMPOSE_MAX_BASE) ||
-           !in_range(mark, UCS_RECOMPOSE_MIN_MARK, UCS_RECOMPOSE_MAX_MARK))
+       if (base < UCS_RECOMPOSE_MIN_BASE || base > UCS_RECOMPOSE_MAX_BASE ||
+           mark < UCS_RECOMPOSE_MIN_MARK || mark > UCS_RECOMPOSE_MAX_MARK)
                return 0;
 
        struct compare_key key = { base, mark };