From: Roel Kluin <roel.kluin@gmail.com>
Date: Tue, 31 Mar 2009 22:25:36 +0000 (-0700)
Subject: viafb: returns 0 two too early
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2bd8c47597b2522795f5eb2e61c22dcfec5dfa6a;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

viafb: returns 0 two too early

Otherwise this will already return 0 if iteration MAXLOOP-2 occurs in the
first loop.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Cc: Joseph Chan <josephchan@via.com.tw>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/video/via/accel.c b/drivers/video/via/accel.c
index 632523ff1fb7..45c54bfe99bb 100644
--- a/drivers/video/via/accel.c
+++ b/drivers/video/via/accel.c
@@ -267,13 +267,17 @@ int viafb_wait_engine_idle(void)
 	int loop = 0;
 
 	while (!(readl(viaparinfo->io_virt + VIA_REG_STATUS) &
-			VIA_VR_QUEUE_BUSY) && (loop++ < MAXLOOP))
+			VIA_VR_QUEUE_BUSY) && (loop < MAXLOOP)) {
+		loop++;
 		cpu_relax();
+	}
 
 	while ((readl(viaparinfo->io_virt + VIA_REG_STATUS) &
 		    (VIA_CMD_RGTR_BUSY | VIA_2D_ENG_BUSY | VIA_3D_ENG_BUSY)) &&
-		    (loop++ < MAXLOOP))
+		    (loop < MAXLOOP)) {
+		loop++;
 		cpu_relax();
+	}
 
 	return loop >= MAXLOOP;
 }