diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c
index c86180b..d9a09d9 100644
--- a/drivers/platform/goldfish/goldfish_pipe.c
+++ b/drivers/platform/goldfish/goldfish_pipe.c
@@ -158,7 +158,7 @@
 	struct goldfish_pipe_dev *dev = pipe->dev;
 
 	spin_lock_irqsave(&dev->lock, flags);
-	gf_write64((u64)pipe, dev->base + PIPE_REG_CHANNEL,
+	gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
 				dev->base + PIPE_REG_CHANNEL_HIGH);
 	writel(cmd, dev->base + PIPE_REG_COMMAND);
 	status = readl(dev->base + PIPE_REG_STATUS);
@@ -172,7 +172,7 @@
 	struct goldfish_pipe_dev *dev = pipe->dev;
 
 	spin_lock_irqsave(&dev->lock, flags);
-	gf_write64((u64)pipe, dev->base + PIPE_REG_CHANNEL,
+	gf_write64((u64)(unsigned long)pipe, dev->base + PIPE_REG_CHANNEL,
 				dev->base + PIPE_REG_CHANNEL_HIGH);
 	writel(cmd, dev->base + PIPE_REG_COMMAND);
 	spin_unlock_irqrestore(&dev->lock, flags);
@@ -327,8 +327,9 @@
 		spin_lock_irqsave(&dev->lock, irq_flags);
 		if (access_with_param(dev, CMD_WRITE_BUFFER + cmd_offset,
 				address, avail, pipe, &status)) {
-			gf_write64((u64)pipe, dev->base + PIPE_REG_CHANNEL,
-					dev->base + PIPE_REG_CHANNEL_HIGH);
+			gf_write64((u64)(unsigned long)pipe,
+				   dev->base + PIPE_REG_CHANNEL,
+				   dev->base + PIPE_REG_CHANNEL_HIGH);
 			writel(avail, dev->base + PIPE_REG_SIZE);
 			gf_write64(address, dev->base + PIPE_REG_ADDRESS,
 				dev->base + PIPE_REG_ADDRESS_HIGH);