gpu: ipu-v3: wait_for_completion_timeout does not return negative status

This fixes up the return value handling and the return type.

Signed-off-by: Nicholas Mc Guire <der.herr@hofr.at>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

1 files changed, 3 insertions, 2 deletions

diff --git a/drivers/gpu/ipu-v3/ipu-dc.c b/drivers/gpu/ipu-v3/ipu-dc.c
index 2326c752d89b..508c81d9c344 100644
--- a/drivers/gpu/ipu-v3/ipu-dc.c
+++ b/drivers/gpu/ipu-v3/ipu-dc.c
@@ -267,7 +267,8 @@ static irqreturn_t dc_irq_handler(int irq, void *dev_id)
 void ipu_dc_disable_channel(struct ipu_dc *dc)
 {
         struct ipu_dc_priv *priv = dc->priv;
-        int irq, ret;
+        int irq;
+        unsigned long ret;
         u32 val;
 
         /* TODO: Handle MEM_FG_SYNC differently from MEM_BG_SYNC */
@@ -282,7 +283,7 @@ 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);