From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sun, 18 Mar 2018 13:48:06 +0000 (+0100)
Subject: video, da8xx-fb: fix time out in wait_for_event()
X-Git-Tag: v2018.05-rc1~64^2~10
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=c16b342d90a1d0b388314889560aa3bd50823df9;p=oweals%2Fu-boot.git

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 6ec4f89e34..26db73b138 100644
--- 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;
 	}