ACPICA: utilities: Fix overflow check in vsnprintf()

ACPICA commit d9d59b7918514ae55063b93f3ec041b1a569bf49

The old version breaks sprintf on 64-bit systems for buffers
outside [0..UINT32_MAX].

Link: acpica/acpica@d9d59b79
Signed-off-by: Rafael J. Wysocki <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: gldrk <[email protected]>
[ rjw: Added the tag from gldrk ]
Signed-off-by: Rafael J. Wysocki <[email protected]>

Author: gldrk

drivers/acpi/acpica/utprint.c

@@ -333,11 +333,8 @@ int vsnprintf(char *string, acpi_size size, const char *format, va_list args)
 
 	pos = string;
 
-	if (size != ACPI_UINT32_MAX) {
-		end = string + size;
-	} else {
-		end = ACPI_CAST_PTR(char, ACPI_UINT32_MAX);
-	}
+	size = ACPI_MIN(size, ACPI_PTR_DIFF(ACPI_MAX_PTR, string));
+	end = string + size;
 
 	for (; *format; ++format) {
 		if (*format != '%') {