linux-kernel - [PATCH 1/3] iommu: omap: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit

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Date:   Mon, 30 Dec 2019 18:26:17 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Joerg Roedel <joro@...tes.org>,
        Robin Murphy <robin.murphy@....com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Eric Auger <eric.auger@...hat.com>,
        Douglas Anderson <dianders@...omium.org>,
        Suman Anna <s-anna@...com>, Tero Kristo <t-kristo@...com>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>
Subject: [PATCH 1/3] iommu: omap: Fix pointer cast -Wpointer-to-int-cast warnings on 64 bit

pointers should be casted to unsigned long to avoid
-Wpointer-to-int-cast warnings when compiling on 64-bit platform (e.g.
with COMPILE_TEST):

    drivers/iommu/omap-iommu.c: In function ‘omap2_iommu_enable’:
    drivers/iommu/omap-iommu.c:170:25: warning:
        cast from pointer to integer of different size [-Wpointer-to-int-cast]
      if (!obj->iopgd || !IS_ALIGNED((u32)obj->iopgd,  SZ_16K))
                             ^

Signed-off-by: Krzysztof Kozlowski <krzk@...nel.org>
---
 drivers/iommu/omap-iommu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c
index be551cc34be4..50e8acf88ec4 100644
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -167,7 +167,7 @@ static int omap2_iommu_enable(struct omap_iommu *obj)
 {
 	u32 l, pa;
 
-	if (!obj->iopgd || !IS_ALIGNED((u32)obj->iopgd,  SZ_16K))
+	if (!obj->iopgd || !IS_ALIGNED((unsigned long)obj->iopgd,  SZ_16K))
 		return -EINVAL;
 
 	pa = virt_to_phys(obj->iopgd);
-- 
2.17.1