From: Wan Jiabing <wanjiabing@vivo.com>
Date: Wed, 13 Oct 2021 02:34:41 -0400
Subject: iommu/dart: Use kmemdup instead of kzalloc and memcpy
Git-commit: 260aecd643fc129c1771cefdd2aaaedf0485fa59
Patch-mainline: v5.16-rc1
References: bsc#1205701
Fix following coccicheck warning:
drivers/iommu/apple-dart.c:704:20-27: WARNING opportunity for kmemdup
Signed-off-by: Wan Jiabing <wanjiabing@vivo.com>
Acked-by: Sven Peter <sven@svenpeter.dev>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Link: https://lore.kernel.org/r/20211013063441.29888-1-wanjiabing@vivo.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
drivers/iommu/apple-dart.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/iommu/apple-dart.c b/drivers/iommu/apple-dart.c
index fdfa39ec2a4d..13ba258b7413 100644
--- a/drivers/iommu/apple-dart.c
+++ b/drivers/iommu/apple-dart.c
@@ -702,13 +702,12 @@ static struct iommu_group *apple_dart_device_group(struct device *dev)
if (!group)
goto out;
- group_master_cfg = kzalloc(sizeof(*group_master_cfg), GFP_KERNEL);
+ group_master_cfg = kmemdup(cfg, sizeof(*group_master_cfg), GFP_KERNEL);
if (!group_master_cfg) {
iommu_group_put(group);
goto out;
}
- memcpy(group_master_cfg, cfg, sizeof(*group_master_cfg));
iommu_group_set_iommudata(group, group_master_cfg,
apple_dart_release_group);