[PATCH 2/6] nokia_rx51: Correct tstc() implementation

[Simon Glass]

This returns false even when there are keys in the buffer. Fix it.

Signed-off-by: Simon Glass <s...@chromium.org>
---

 board/nokia/rx51/rx51.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/board/nokia/rx51/rx51.c b/board/nokia/rx51/rx51.c
index 238b9637badd..138f5a811eb6 100644
--- a/board/nokia/rx51/rx51.c
+++ b/board/nokia/rx51/rx51.c
@@ -668,6 +668,9 @@ static int rx51_kp_tstc(struct udevice *dev)
        u8 intr;
        u8 mods;
 
+       if ((KEYBUF_SIZE + keybuf_tail - keybuf_head) % KEYBUF_SIZE)
+               return 1;
+
        /* localy lock twl4030 i2c bus */
        if (test_and_set_bit(0, &twl_i2c_lock))
                return 0;
-- 
2.41.0.162.gfafddb0af9-goog