SDL_evdev.c: fix building against old kernel headers (K_OFF may not be defined.)
diff --git a/src/core/linux/SDL_evdev.c b/src/core/linux/SDL_evdev.c
index ee142df..36166e3 100644
--- a/src/core/linux/SDL_evdev.c
+++ b/src/core/linux/SDL_evdev.c
@@ -52,18 +52,19 @@
#include "../../events/SDL_events_c.h"
#include "../../events/scancodes_linux.h" /* adds linux_scancode_table */
-/* This isn't defined in older Linux kernel headers */
+/* These are not defined in older Linux kernel headers */
#ifndef SYN_DROPPED
#define SYN_DROPPED 3
#endif
-
-/* These are not defined in older Linux kernel headers */
#ifndef ABS_MT_SLOT
#define ABS_MT_SLOT 0x2f
#define ABS_MT_POSITION_X 0x35
#define ABS_MT_POSITION_Y 0x36
#define ABS_MT_TRACKING_ID 0x39
#endif
+#ifndef K_OFF
+#define K_OFF 0x04
+#endif
typedef struct SDL_evdevlist_item
{