linux-kernel - [PATCH] arm: mm: use kvmalloc instead of kzalloc and vzalloc

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Message-Id: <1639484247-75684-1-git-send-email-wangqing@vivo.com>
Date:   Tue, 14 Dec 2021 04:17:22 -0800
From:   Qing Wang <wangqing@...o.com>
To:     Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Wang Qing <wangqing@...o.com>
Subject: [PATCH] arm: mm: use kvmalloc instead of kzalloc and vzalloc

From: Wang Qing <wangqing@...o.com>

fix kvmalloc.cocci warning:
arch/arm/mm/dma-mapping.c:1209:28-29: WARNING opportunity for kvmalloc

Signed-off-by: Wang Qing <wangqing@...o.com>
---
 arch/arm/mm/dma-mapping.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c
index 4b61541..0fa8801
--- a/arch/arm/mm/dma-mapping.c
+++ b/arch/arm/mm/dma-mapping.c
@@ -1206,10 +1206,7 @@ static struct page **__iommu_alloc_buffer(struct device *dev, size_t size,
 	int i = 0;
 	int order_idx = 0;
 
-	if (array_size <= PAGE_SIZE)
-		pages = kzalloc(array_size, GFP_KERNEL);
-	else
-		pages = vzalloc(array_size);
+	pages = kvmalloc(array_size, GFP_KERNEL);
 	if (!pages)
 		return NULL;
 
-- 
2.7.4