From: Wei Yongjun <yongjun_...@trendmicro.com.cn>

The memory return by kzalloc() or kmem_cache_zalloc() has already
be set to zero, so remove useless memset(0).

spatch with a semantic match is used to found this problem.
(http://coccinelle.lip6.fr/)

Signed-off-by: Wei Yongjun <yongjun_...@trendmicro.com.cn>
---
 drivers/usb/serial/cp210x.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index 1e71079..3f86cf3 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -865,7 +865,6 @@ static int cp210x_startup(struct usb_serial *serial)
                if (!port_priv)
                        return -ENOMEM;
 
-               memset(port_priv, 0x00, sizeof(*port_priv));
                port_priv->bInterfaceNumber =
                    serial->interface->cur_altsetting->desc.bInterfaceNumber;
 

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