[PATCH] sound:emu10k1:Use kmemdup instead of duplicating its function

[huang.zijiang]

From: "huang.zijiang" <huang.ziji...@zte.com.cn>

kmemdup has implemented the function that kmalloc() and memcpy().

Signed-off-by: huang.zijiang <huang.ziji...@zte.com.cn>
---
 sound/pci/emu10k1/emufx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sound/pci/emu10k1/emufx.c b/sound/pci/emu10k1/emufx.c
index 6ebe817..b4fe4c5 100644
--- a/sound/pci/emu10k1/emufx.c
+++ b/sound/pci/emu10k1/emufx.c
@@ -671,10 +671,9 @@ static unsigned int *copy_tlv(const unsigned int __user 
*_tlv, bool in_kernel)
                return NULL;
        if (data[1] >= MAX_TLV_SIZE)
                return NULL;
-       tlv = kmalloc(data[1] + sizeof(data), GFP_KERNEL);
+       tlv =  kmemdup(data, data[1] + sizeof(data), GFP_KERNEL);
        if (!tlv)
                return NULL;
-       memcpy(tlv, data, sizeof(data));
        if (in_kernel) {
                memcpy(tlv + 2, (__force void *)(_tlv + 2),  data[1]);
        } else if (copy_from_user(tlv + 2, _tlv + 2, data[1])) {
-- 
1.8.3.1