linux-kernel - [PATCH 3/3] swiotlb: Simplify array allocation

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Message-Id: <432f572de793ec5085a048a51fdd977cba6a5f51.1643028164.git.robin.murphy@arm.com>
Date:   Mon, 24 Jan 2022 16:40:19 +0000
From:   Robin Murphy <robin.murphy@....com>
To:     hch@....de, konrad@...nel.org
Cc:     iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        tientzu@...omium.org, guozhengkui@...o.com
Subject: [PATCH 3/3] swiotlb: Simplify array allocation

Prefer kcalloc() to kzalloc(array_size()) for allocating an array.

Signed-off-by: Robin Murphy <robin.murphy@....com>
---
 kernel/dma/swiotlb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index f56d6504903c..44c49c3616fe 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -820,8 +820,7 @@ static int rmem_swiotlb_device_init(struct reserved_mem *rmem,
 		if (!mem)
 			return -ENOMEM;
 
-		mem->slots = kzalloc(array_size(sizeof(*mem->slots), nslabs),
-				     GFP_KERNEL);
+		mem->slots = kcalloc(nslabs, sizeof(*mem->slots), GFP_KERNEL);
 		if (!mem->slots) {
 			kfree(mem);
 			return -ENOMEM;
-- 
2.28.0.dirty