[PATCH 4.19 2/5] media: siano: Use kmemdup instead of duplicating its function

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From: Wen Yang <wen.yang99@xxxxxxxxxx>

[ Upstream commit 188ba34e2bcfc9a23d301bd78e35bc1d5ad9ae5a ]

kmemdup has implemented the function that kmalloc() + memcpy().
We prefer to kmemdup rather than code opened implementation.

This issue was detected with the help of coccinelle.

Signed-off-by: Wen Yang <wen.yang99@xxxxxxxxxx>
CC: Tomoki Sekiyama <tomoki.sekiyama@xxxxxxxxx>
CC: linux-kernel@xxxxxxxxxxxxxxx
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Lee Jones <lee.jones@xxxxxxxxxx>
---
 drivers/media/usb/siano/smsusb.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/media/usb/siano/smsusb.c b/drivers/media/usb/siano/smsusb.c
index ec759f43c634..3ab72d653737 100644
--- a/drivers/media/usb/siano/smsusb.c
+++ b/drivers/media/usb/siano/smsusb.c
@@ -226,10 +226,9 @@ static int smsusb_sendrequest(void *context, void *buffer, size_t size)
 		return -ENOENT;
 	}
 
-	phdr = kmalloc(size, GFP_KERNEL);
+	phdr = kmemdup(buffer, size, GFP_KERNEL);
 	if (!phdr)
 		return -ENOMEM;
-	memcpy(phdr, buffer, size);
 
 	pr_debug("sending %s(%d) size: %d\n",
 		  smscore_translate_msg(phdr->msg_type), phdr->msg_type,
-- 
2.24.0




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