linux-kernel - [PATCH] gpu: host1x: Fix compiler errors

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Message-ID: <20180326144314.xeuocqp5fjpfjm3q@lianli>
Date:   Mon, 26 Mar 2018 16:44:14 +0200
From:   Emil Goode <emil.fsw@...de.io>
To:     Thierry Reding <thierry.reding@...il.com>,
        Thierry Reding <treding@...dia.com>
Cc:     dri-devel@...ts.freedesktop.org, linux-tegra@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH] gpu: host1x: Fix compiler errors

The compiler is complaining with the following errors:

drivers/gpu/host1x/cdma.c:94:48: error:
	passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
	[-Werror=incompatible-pointer-types]

drivers/gpu/host1x/cdma.c:113:48: error:
	passing argument 3 of ‘dma_alloc_wc’ from incompatible pointer type
	[-Werror=incompatible-pointer-types]

The expected pointer type of the third argument to dma_alloc_wc() is
dma_addr_t but phys_addr_t is passed. Fix this by adding casts to the
expected pointer type.

Signed-off-by: Emil Goode <emil.fsw@...de.io>
---
 drivers/gpu/host1x/cdma.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/host1x/cdma.c b/drivers/gpu/host1x/cdma.c
index 28541b280739..5e8b321a751e 100644
--- a/drivers/gpu/host1x/cdma.c
+++ b/drivers/gpu/host1x/cdma.c
@@ -91,8 +91,8 @@ static int host1x_pushbuffer_init(struct push_buffer *pb)
 
 		size = iova_align(&host1x->iova, size);
 
-		pb->mapped = dma_alloc_wc(host1x->dev, size, &pb->phys,
-					  GFP_KERNEL);
+		pb->mapped = dma_alloc_wc(host1x->dev, size,
+					  (dma_addr_t *)&pb->phys, GFP_KERNEL);
 		if (!pb->mapped)
 			return -ENOMEM;
 
@@ -110,8 +110,8 @@ static int host1x_pushbuffer_init(struct push_buffer *pb)
 		if (err)
 			goto iommu_free_iova;
 	} else {
-		pb->mapped = dma_alloc_wc(host1x->dev, size, &pb->phys,
-					  GFP_KERNEL);
+		pb->mapped = dma_alloc_wc(host1x->dev, size,
+					  (dma_addr_t *)&pb->phys, GFP_KERNEL);
 		if (!pb->mapped)
 			return -ENOMEM;
 
-- 
2.11.0