linux-kernel - [PATCH] gpu: ipu-v3: wait_for_completion_timeout does not return negativ status

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Message-Id: <1421405282-8951-1-git-send-email-der.herr@hofr.at>
Date:	Fri, 16 Jan 2015 11:48:02 +0100
From:	Nicholas Mc Guire <der.herr@...r.at>
To:	Philipp Zabel <p.zabel@...gutronix.de>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Lucas Stach <l.stach@...gutronix.de>,
	Emil Renner Berthing <kernel@...il.dk>,
	Antoine Schweitzer-Chaput <antoine@...weitzer-chaput.fr>,
	linux-kernel@...r.kernel.org, Nicholas Mc Guire <der.herr@...r.at>
Subject: [PATCH] gpu: ipu-v3: wait_for_completion_timeout does not return negativ status

Signed-off-by: Nicholas Mc Guire <der.herr@...r.at>
---

Patch is against 3.19.0-rc3 -next-20150109

This patch was compiletested with imx_v6_v7_defconfig + 
CONFIG_RESET_CONTROLLER=y, CONFIG_IMX_IPUV3_CORE=m

 drivers/gpu/ipu-v3/ipu-dc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/ipu-v3/ipu-dc.c b/drivers/gpu/ipu-v3/ipu-dc.c
index 2326c75..0ffa659 100644
--- a/drivers/gpu/ipu-v3/ipu-dc.c
+++ b/drivers/gpu/ipu-v3/ipu-dc.c
@@ -282,7 +282,7 @@ void ipu_dc_disable_channel(struct ipu_dc *dc)
 	enable_irq(irq);
 	ret = wait_for_completion_timeout(&priv->comp, msecs_to_jiffies(50));
 	disable_irq(irq);
-	if (ret <= 0) {
+	if (ret == 0) {
 		dev_warn(priv->dev, "DC stop timeout after 50 ms\n");
 
 		val = readl(dc->base + DC_WR_CH_CONF);
-- 
1.7.10.4

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