video, da8xx-fb: fix time out in wait_for_event()

If an event does not occur the current coding stays in an endless loop.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>

diff --git a/drivers/video/da8xx-fb.c b/drivers/video/da8xx-fb.c
index 6ec4f89..26db73b 100644 (file)
--- a/drivers/video/da8xx-fb.c
+++ b/drivers/video/da8xx-fb.c
@@ -853,9 +853,10 @@ static u32 wait_for_event(u32 event)
        do {
                ret = lcdc_irq_handler();
                udelay(1000);
-       } while (!(ret & event));
+               --timeout;
+       } while (!(ret & event) && timeout);
 
-       if (timeout <= 0) {
+       if (!(ret & event)) {
                printf("%s: event %d not hit\n", __func__, event);
                return -1;
        }